Low Coolant Warning - Common B58 Issues

[@kern417]

Order your discounted BMW parts through my BimmerNetwork Affiliate Link (Coupon Code "kern417"): www.bimmernetwork.com/?afmc=kern417&

[@Chris-fo9rf]

Bro you’re a telepath. The second an issue pops up, you upload a video explaining the problem and how to fix it. Keep up the work brotha!

[@kern417]

Haha glad to help

[@abdurrafay8084]

Man, I really appreciate you for making this video🫡 I am having this issue with my B58 7 series. There are so many questions I had in mind which you addressed clearly like which coolant to use & where to find the coolant reservoir and the common issues which causes this coolant leak.

[@rotary88gxl]

2017 540i, had the low coolant message yesterday morning for the first time. Main tank was bone dry. Filled it up, 2hrs later there was a large puddle under the engine. Took it to the dealer, failed water pump. Only has 40k miles on it too. Thankfully under warranty.

[@cultistpriest1872]

My mistake was when my car would say low coolant I thought it was for the small one not the big one, never checked the big one till few mins ago she was empty. I learned something today from this video thanks alot you saved my 230i

[@TravisRayLive]

Much appreciated. My 2022 Supra had a coolant problem at about 45k miles, and it turned out to be the cap. I unscrewed it after getting the “refill coolant” warning and saw crusty coolant all around the threads and the plastic at the base of the threads. Easy peazy.

[@gizzmocoty]

One thing to add... the smaller reservoir is for your intercooler. The intercooler is built into the intake manifold on the B58. Another loss of coolant can be your intercooler leaking and sucking coolant in with air. This will also cause white smoke issue.

[@kern417]

This is only related to getting a low Coolant message on iDrive. The error is not linked to the intercooler system.

[@chongyeouwei3433]

Will the small tank low coolant sensor faulty and getting low coolant faults on idrive?

[@kern417]

@@chongyeouwei3433 just now seeing this. The small tank doesn't have a sensor unfortunately

[@devildogpaul]

​@kern417 thanks for uploading this video I'm subscribing right away. How often does the ext. engine coolant need to be refilled? I got the low coolant warning message, so I filled it to the maximum mark, two days later I take my car for an oil change to a local shop and they checked the antifreeze plus the external engine coolant (is this a separate reservoir?) but no leaks or problems reported. Please answer this if you can, my 2017 X3 needs around 300mL of coolant every 6-12 months it's @66K bought it used from the dealer 4 years ago @15K. How normal is that? No leaks visible so I will follow the steps of this video and hope to find some answers. Thanks in advance!

[@kern417]

Losing coolant is not normal. It may be evaporating past the cap.

[@pilou0013]

Oh my god, thank you so much for your video. It's been 2 days since I tried to find out why I have 2 coolant tank. Even at my BMW dealership they didn't know.

[@alexandrereis7355]

Change dealership ASAP

[@kyledevore871]

Got my BMW yesterday and today it gave me a low coolant warning. Thx for the info. I got 6 days left before I get to take it back or not. 😂

[@edgarl5272]

I've heard about that coolant cap issue as well. I had the same low coolant error come up on my car several times after topping it off. Ended up taking the car to the dealership and they replaced the water pump. Great video though! You're like the encyclopedia for B58s!

[@jkeeeng]

Is that sorted the issue? Were you loosing much coolant when you had an issue with the water pump? Is that was under the warranty?

[@dwaynebolan2583]

Great video! Please make a video on what to look for when shopping for a used F30 340i.

[@terrancepinkney777]

Had a low coolant message two days ago and filled up the smaller tank and didnt even check the larger one. I checked tonight it was low, the crazy thing is the message went away once I fill the small though. They are both up to par now.

[@bonearchetype]

Thanks for posting your experience! My filler cap is leaking as evidenced by white crust around the base of the filler hole so, I’m replacing the o-rings on the cap instead of buying a new cap. I’ll update after a week or so with results 👍🏼👍🏼

[@bonearchetype]

Update. I put two size 18 orings to replace the old flat ones. A week later and my cap is no longer leaking. Thanks a bunch for this great video 👍🏼👍🏼👊🏼

[@SnowBob302]

Ah you da man. Got the message, inspected for visual leaks as it was cooling down, opened the cap and sure enough I have the leak through the cap. Will see a reminder to post back if that fixed it for my 2021 G20 330i. Thank you for the great video!

[@michaeltran1590]

I had this coolant message pop up and my b58 was overheating. I put some coolant into the tank and drove it to the dealership where they said that they coolant hose snapped and not feeding coolant correctly into the engine. They replaced the hose and the issue was fixed.

[@kern417]

glad you got it sorted. i'm sure other areas will be identified as common for coolant loss as our cars go up in mileage.

[@wordtruth6116]

Great video. Great channel for B598 engines.

[@F32_Rocket]

I use coolant with EXTRA nitrates and phosphates in it. Good stuff. 👍 Always use the OEM recommended fluids, guys 😉

[@TheTallRaver]

Great video! Spot on tip at the end about the coolant cap. I have the same crusty residue around the thread, which means the cal is the culprit and is leaking from there! Thanks buddy!👍👍😉💪

[@TheVernonator18]

any update? did this work for you? i have the same residue around my cap cover and wonder if this could be the cause

[@omarsiddiqi]

When my car was under warranty, the dealership did all these steps and said you have no leaks, it is normal for this engine to lose a little coolant. The nerve of these people. They should have changed the cap under warranty if all else failed. I check my coolant every so often after my initial warning and i too see a little white crust around the cap. I suspect it is my culprit and because it's cheap, I'll start with replacing the cap (based on the dealer saying no leaks exist, pretty new car still)

[@kern417]

I had to fight with my dealership to get the cap replaced. You're not alone.

[@alexng704]

holding my sides for the Die Hard clip... 😆 Thanks for the info btw, it's very helpful.

[@wingedhussar5528]

1:15 reminded my of the water puzzle from Die Hard 3.

[@dj3ss3nc3]

exactly 4 gallons!!

[@nalindapunchihewa2173]

This was very very helpful. Thank you so much for sharing.

[@EHJ714]

Excellent video. Thanks for the tips and information sharing.

[@dr.michaeltreysman6556]

Hey man so been a few days now. I live in Michigan and every morning I wake up with the car cold, and the refill coolant sensor is going off but levels are normal. After driving for a bit, my JB4 tells me my IAT is above 100 and the sensor usually turns off. I’m guessing that means the whole thing needs to be replaced.

[@timewilltell7409]

Thanks for this video…much needed information.

[@johnbolton9968]

Thanks much for this. The main coolant reservoir on my 340i is just at the min right now and I had just chalked it up to the extreme cold we had here in the Midwest since there was no warning in iDrive. My E46 330i seemed overly sensitive to coolant level, so I expected a warning if anything was amiss. I've also noticed little spots on and near the reservior that don't belong, so I highly suspect that it's the coolant cap.

[@kern417]

It could be the reservoir as well. That was leaking on my X5. A pressure test will confirm and some dealers will do it for free/cheap if you don't have the pressure tester.

[@johnbolton9968]

@@kern417 sounds good. As soon as the snow melts, I'm going to do coils & plugs so ill check it out then. Thanks a ton for your vids as they are super helpful. The last motor I really learned well was the audi 2.7T APB in my 01 S4 so I've been trying to learn the B58 now. Your stuff is really informative.

[@johnbolton9968]

@@kern417 Hey...just wanted to say big thanks for pointing this out. I replaced the cap on my main coolant reservoir, topped it off and it hasn't dropped a bit since. Over this past weekend, I replaced the stock airbox with a CTS Turbo Intake (despite all the recommendations that the stock airbox flows fine) and I really like the sound. I was pulling 4th gear to redline yesterday morning and threw a 20E120 - Crankcase Ventilation Host disconnected code though. I checked all the fitment, tightened down the hose clamps a bit more and it hasn't come back yet. I haven't had a chance to pull 4th to redline again however. I got a couple questions if you have a chance to answer: - Does the crankcase vent cycle back into the turbo inlet? - Is there something I could log to get more insight on what is causing the code? - Is installing a catch can worth it on these engines? I've heard the PCV system is adequate to where an OCC isn't really necessary on stock turbo....thoughts? On my B5 S4, the OCC was an absolute must because that PCV system was junk from the factory. Thanks for all the great content.

[@johnbolton9968]

Literally right after I hit send on this, I saw you have a vid on the whole PCV system. I'll watch that now.

[@kern417]

Thanks man. I also have a video on the code you got if you check my channel. It's a very common code to get with an aftermarket intake. The crankcase vent has to recirculate before the turbo, but our cars do not have a tendency of pushing a lot of oil. So for the most part a catch can is not needed.

[@lancercool1992]

so it's the scariest when you do the pressure test and the pressure does go down

[@Bryanb58]

My bigger tank is overfilled, but my smaller one is underfilled, yet my big one has a lot of residue on the cap. I am only getting a dme code for coolant loss

[@maurecara6908]

Great video I had coolant being burned up and BMW diagnosed it as a faulty oil filter housing because I needed it right away they hit me for 3 k you explained what the large tank is full of of what is the small tank for and do you need to top that off also really appreciate the video thanks

[@kern417]

If it's low then yes you need to top it off

[@arfeenayube4224]

Very helpful video bro...thanks...lots of additional info also..

[@soundcheckgirl2868]

Thank you, this is very helpful information.

[@tube2892]

Great video. I am thinking of getting a used 340, and I noticed you made a video about the PCV issue and now a video about the coolant. Would you say this is a reliable engine for the most part with a few minor issues? Are there any other issues with this engine?

[@kern417]

Yes there are other potential issues but overall it is reliable. There aren't any common catastrophic failures that cause failures like engines, turbos, etc. They're also more common on early models (2016s) but you can see things like this are a quick fix if it happens to you.

[@mattmartin598]

Apparently around 100k miles it's common for the plug on the water pump to leak/blow out.

[@kern417]

Just replaced mine 🙃 DIY will be up in the next few weeks

[@mattmartin598]

@@kern417 just noticed mine is leaking a bit. Local shop just got a 340i in around my same mileage with plug blown out, guy kept driving it and trashed the engine. I'm at 96k miles, bought at 60. Tiny leak. Swap seems pretty straightforward if not doing the entire thermostat housing. Look forward to your video! 🍻

[@halfreeman2135]

thank you.. this is happening in my 37K miles 550i.. but it is off warranty. After replacing coils and injectors .. yet another reason not to buy another BMW

[@williegonzalez1692]

Going through this problem with my 2021 M340i . Going to the dealer Monday 🤦🏻 there is a leak I saw the coolant dripping underneath the car

[@MrRobVision]

Be the biggest homie ever and post a video replacing the oil filter housing

[@nazirmalik4705]

There is no evidence of physical leaking of the heat management module and the coolant pipe that I can see from the video that the workshop gave me. However, can these parts still be somehow leaking and must they be immediately replaced?

[@SalvatoreRossi-rl4jj]

Stupid question but can you just add coolant and not have to bleed the air out? I had a low coolant code come up on my car, got oem 50/50 mix. Just worried that if i top it off something might happen. Do i need to bleed all air out?

[@giloh.1359]

Thanks a lot!! can you show us how to flush the cooling system, please??

[@kern417]

Sure. I've talked about the steps in my other videos piece by piece but I can put it all together in one video

[@jkeeeng]

@@kern417 Joining! Yeah would be great!

[@seang3538]

I rec'd 1 low coolant message since July 2017 and it's been probably 2 years. Went to dealer and they filled it up in the drive thru bay, they didn't add that much.

[@kern417]

Good point, some people have reported that it was simply underfilled at the factory

[@stevesmith1493]

I have a similar pump like that in my nightstand.

[@antwonsan]

I changed the reservoir cap, did the pressure test and it passed, idk what else it could be, I’m slowly loosing coolant still

[@kern417]

Head gasket? Turbo?

[@xXxKenshinxXx]

Do you have any tips or suggestions on opening the second reservoir cap (expansion)? Mine is stuck and pretty difficult to undo. Thanks!

[@User37621]

This was very informative thanks man. Our 2018 X3 21k miles gave low coolant message. I topped off the large tank with bmw oem blue coolant. It took a little over 1 quart. I did not dilute it down just added it straight. Any concern for doing that ? Thanks

[@kern417]

A quart is a lot. When you have a chance I will use a turkey baster to take some out and add some distilled water. It probably isn't a big deal now if it's winter where you are, but it's best to have closer to a 50-50 mix.

[@User37621]

@@kern417 thanks for the reply I might do that. The big question is how the hell did a quart disappear lol will have the dealership check it out also.

[@ridaponce7536]

I have an alert from my 2013 650i Gran Coupe. Message: "Engine coolant level too low. Risk of engine damaged! Top up the coolant at the earliest opportunity, see Owner Handbook. Caution: risk of scalding!" Do I put the coolant in the engine coolant or the intercoolant? Please help

[@stilodrian6342]

Yo i recently ran into a problem with my 2018 340i idk if to be concerned or not but every time I do a couple of pulls nothing crazy the center console seems to warm up at first I thought it was because of the heat but it still does it even when cold any suggestions?

[@theoutsider6191]

Thanks for this, could you specify the BMW Coolant number, for example i just exchanged my Mini Cooper S for a BMW M240i and i have a litre of blue BMW Coolant 87 for the Mini and i think it is the right one for the M240i (makes sense since these are both modular petrol engines from the same family). Folks don't seem to add the product number details, and of course i think there are actually two numbers used to describe the same product here. Also, i read that de-ionised water can also be used for topping up, and is actually better according to some. Would you say this is accurate?

[@ruckinehround6965]

Great video great explanation. Thanks.

[@hass1005]

Hey man, thanks a lot for you detailed explanation. Yesterday I got that message and I toped off the coolant. I went for a drive after that and I start smelling something burned after a short drive. Any thought off why this is happen ? The message is gone tho

[@TradeGodTheWizard]

pouring coolant in my bmw and its not holding the coolant at all, all spills right out , what should i do?

[@amitray6614]

Very useful video. Thanks for sharing.

[@ssswdon]

I have a 2018 540, I have to top off probably twice a tear. The only sign I see of leaks is a white crust under the cap, thoughts ?

[@kern417]

try replacing the cap

[@ssswdon]

@@kern417 yeah it came back to leak; this time the res tank hose broke; had an old solid plastic(2018). Now the car is leaking on passenger side, continuous drip. Any thought what's on passenger side that would leak; I heard you mention turbos?

[@adamarndt7617]

What about the replacement intervals for the intercooler coolant system? Does it use the same BMW coolant as the engine side?

[@ivald9952]

Thank you Great video. What is the smaller reservoir for? I heard it was for the A/C system.

[@kern417]

Intercooler

[@ivald9952]

@@kern417 I have a 2018 430i F33. Is it the same 50/50 mix? I took the car into BMW because the A/C would cool for 2 minutes and go warm. I thought I had a leak or other issue. Service manager told me the intercooler was low and then the compressor doesn’t lock in. Now 12 months later it’s happening again. I’m off warranty now and hoping it’s that again. I could do it myself.

[@kern417]

Yes

[@ivald9952]

@@kern417 thank you!

[@submariner179]

My expansion tank had a rupture after 5 years, just fixed

[@Bryanb58]

Where can I order a new cap. I have the same residue

[@rcauthen324]

I have a ‘21 M5 Comp (S63) with 9k miles. I had to top off the coolant twice since I had the car (2 yrs this Aug). I took the car to BMW since my oil change was due and they ran a pressure test and stated they detect no leak. This sound right? Also, my car has two places to add coolant; one for the engine the other turbos.

[@kern417]

It may be the cap itself

[@rcauthen324]

@@kern417 Yes, possible. I will keep an eye on it. Thanks!

[@anthonyh958]

Another superb informative and well explained video. As said above,the smaller reservoir is for the large front intercooler (that you upgraded in a previous video), air to water intercooler in the inlet manifold and to the turbo itself. I have a 2017 M140i (UK) and in 18 months of ownership I’ve had to top-up the larger engine side coolant reservoir with approximately a quart full of distilled water,tiny amounts at a time as I check it regularly. My thought is evaporation via a faulty reservoir cap. One question though- to refit my cap (stone cold) takes extreme effort,I certainly can’t just spin it on until the locking point like yours? (The threads are clean and no tell tail sign of leakage around the reservoir top🤷🏼‍♂️)

[@kern417]

The small reservoir is for the intercooler system only. The turbo and engine run off of the larger reservoir. Like I mentioned in the video, the small reservoir doesn't have a level sensor so it doesn't throw an error message for low coolant. That's why it's not included in this video. You may have a faulty cap If it's difficult to put on with the threads clean. There shouldn't be any excessive resistance.

[@anthonyh958]

@@kern417 thanks kern,I was told the larger reservoir was engine and smaller one the turbo side of things. I’ve no doubt you are correct though,would make more sense to use the larger volume of coolant to help in cooling the turbo itself and keeping the other circuit to concentrate on IAT 👍. As for the reservoir cap on my m140 it appears a known issue here in the UK. Some have even been applying a very thin film of lube spray around the last few threads which I won’t be doing. I’ll take the issue up with BMW themselves. All the best and keep your great information and content coming, Ant.

[@worldwariiiiscomimg8657]

Hello Kern, my BMW 230i has two tanks as in your video, the bigger tanks has a normal level coolant, but a small tank on the lower right has coolant disappeared, I tried to top off with distilled water, but it still leaks in somewhere until I can't see level of coolant , let me ask you. Can I drive for 35 miles from home to dealership to let them fix the coolant system? Thanks for your reply!!!!

[@cezz9639]

Is it normal for the coolant in the big coolant tank to turn clear? It used to be blue/green but now it turned clear. Should I be worried? I had this issue about a 1-2 years ago and I thought the previous owner put the wrong coolant since it was a yellow/clear color, so I took it to bmw to have the coolant flushed and refilled but now it’s back and this time it’s more clear than yellow. The smaller coolant tank is the right color it’s just the big tank that’s giving me a problem. Could it be something I have to be worried about? The temp doesn’t get high just under 250°. I’m not sure if this helps but It’s a 17 340 with 34k miles stage 2. I’d appreciate the feed back!

[@kern417]

it may just be diluted with too much water

[@chrislol2077]

Just bought my cap today

[@BAZZERBAZ]

Would the pressure test failing...and no signs of leaks indicate turbo or head gasket? Just got this issue this morning. Once again thanks for you help. Gonna top it up, do a pressure test and go from there.

[@kern417]

Most likely indicates cap

[@BAZZERBAZ]

@@kern417 thanks dude, bought another one waiting to arrive. Problem is since topping up Friday...checked this morning and coolant is below min again...think gonna be a bigger issue than the cap. Still can't see a leak

[@SR-di1qr]

Dude, my coolant caps don’t come off or go on as easily as yours. 😅 what the feezy

[@Ghostryde58]

Question for you, where can I find the coolant temp sensor? He dealer told me a mouse chewed the wiring for the sensor so they would need to replace it. They tried charging me 1800 to do so. I am capable of doing it myself as long as I know where it is

[@mirageycq]

Thank you sir. Very helpfull.

[@jamesbaker8516]

Aye bro thanks for the video. My main expansion tank is fine. (Blue coolant and correct level) but the smaller coolant tank is over filled with a clear liquid. (Smells like coolant but it’s not blue). So far I’ve never gotten any warning lights and the operating temperature has been normal and consistent. If you’ve seen or heard of this before I’d really appreciate some advice on if I should keep running it or take action. (Not under warranty btw)

[@kern417]

It may just be more diluted so it looks like water. You won't get any warnings from it being overfilled but can use a turkey baster to suck some out for peace of mind.

[@tonymallia1940]

Great video. Where did you get your new cap?

[@kern417]

Dealership

[@MarekMarciniak]

great video. Thanks

[@mikenolan8807]

Did you notice immediately that the new cap had girthy o rings and the stock cap seemed flush? Or is it just me. My stock cap is nearly flush where the o rings should be protruding/sealing.

[@kern417]

I did not notice that

[@aylahughes9185]

the cap on high pressure turbo engines has a big task. it has to both regulate pressure in the cooling system to optimize its performance, but it also has to blead vapor simultaneously. when coolant passes thru the turbo under load it is subject to the most strenuous conditions it will see short of a catastrophic overheat. there is already cavitation producing some bubbles in any cooling system, but this is amplified in turbo cars. a look back at older manuals for turbo charged vehicles tells a guy all he needs to know about how much less cautious the car manufacturers have gotten with these high performance engines. the fact is that these plastic caps allow for some coolant loss during proper operation, and its honestly good on bmw to say that these engines consume coolant in normal operation because they do. its how the cap is designed. if the cap did not have this variable ability to both maintain pressure and blead vapor then these sealed expansion tank designs on hpt engines would not work.

[@kern417]

My car does not and should not lose any coolant. If your coolant levels are dropping then you need to fix the leak.

[@aylahughes9185]

@@kern417 yea if you check between gas trips the amount remains the same, but im sure if you are checking on like 3k mile intervals you will have to top up occasionally. its just the nature of the design of these lids. cant argue with the physics of cavitation, turbos are hot enough to coke the oil, what do you think happens to the water that passes through them also? its why the expansion tanks are so big on turbocharged vehicles relative to their displacement. also having a lid design that holds pressure but bleads vapor is a real good way to keep people coming into the shop for lil cheap nothing repairs that make the shop money. or heck, in the case of you bmw guys with like a binary sensor in your coolant tank maybe not so cheap...

[@kern417]

@@aylahughes9185 i haven't had to top off my coolant in 4 years since replacing the cap. that's how it is for anyone that has no leaks.

[@kern417]

@@aylahughes9185 and by the way coolant top offs are free at all BMW dealerships. They make no money from it.

[@Noizy-te2zz]

what is that thing in the left of cap? you must open it with keys or ?

[@cicada3312]

can NO coolant in b58 Cause the car not to crank at all?

[@Zoksta69]

Hey bro! I’m picking up my b58 in a few days, any eye ball tests I should do before picking it up??

[@kern417]

Check Coolant levels and ask for maintenance history

[@Zoksta69]

@@kern417 thanks bro :)

[@Noizy-te2zz]

my second one the little one cap is full even on top of max almost full cap, so what should i do to take it off untill between min and max or ?

[@kid2519]

Has there been engine valve cover gasket or oil housing gasket leaks yet for B58 engine?

[@kern417]

Yes on higher mileage cars

[@treliq]

@@kern417 high milage as 100k +?

[@kern417]

@@treliq yes

[@nelsondominho8614]

Thank you for this excellent video, i have a 440i , i had the problem of lack of power you are talking about, then the fan that starts every time i stop idling. I went to bmw, they changed the water radiator. Now when my car reaches ist normal operating temperature, my fan starts at low speed, then it won't shut off again unless i turn off the engine. if i let cool for 1 hour then i restart it then the fan also starts. After 1 hour /2 hours of use, the fan switches to an even higher speed when stopped, the engine speed rises to 750rpm instead of the usual 650rpm. I had never seen this before even in high heat, i sspecify that this is seen without the air conditioner of. i don't think it's normal. Can you help me about this. excuse me for my english

[@kern417]

Can you scan for codes

[@nelsondominho8614]

@@kern417 i had the code 20A201, on this engine it's normal the fan runs all the time at low speed.

[@kern417]

kzbin.info/www/bejne/lWqkg5ewr52Dn6s

[@TheRealMrLofasz]

Great video. Thanks.

[@euanbegbie]

Why don’t just buy one distilled water and one empty bottle?

[@sukhman2795]

Have 2018 bmw 330i. Got coolant level low sign. It wasn’t that low. But i have observed engine is becoming hot now. But it’s normal on the dashboard as it should be. And whenever i turn my car off even after just 15 minutes drive. I always observe the coolant is boiling inside. Means my car is boiling coolant. Engine also seems hot than regular but it’s normal on the dashboard as it used to. So why coolant is boiling??? What should i do?

[@kern417]

take it to a shop

[@moderncity9518]

I put Peak 50/50 coolant/anti freeze in my 2017 530i. It was green - is this a major problem?

[@kern417]

color doesn't matter. just make sure it meets the minimum requirements

[@crissy7503]

2015 BMW 528i twin turbo 4cyl The annoying low coolant messege every time the car is on, replaced coolant sensor under the reservoir and still the same Any Ideas ? Thanks in advance.

[@chaswebb4016]

I’ve a 2014 same model, same problem. Did you ever get to the bottom of it…?

[@Lexingtonthe3rd]

Same here did you ever fix it chas

[@alexandrewoods3763]

I just experienced this in my 2017 540i. Should I remove my bm3 stage 1 tune before taking to the dealership?

[@kern417]

It would be a good idea but most times they just top off your coolant in the service bay

[@alexandrewoods3763]

@@kern417 thanks

[@J-Bliz]

Hey Kern, totally unrelated but I had a quick question for ya. I was servicing my transmission just a couple of hours ago and guess what? I overtorqued and snapped one of the transmission pan bolts. It's bolt #1 according to ZF's torque pattern. Do you think I'm screwed and need to take my car somewhere to get that screw out/the job redone or do you think I'd be fine without that screw for some time.... Thinking about just monitoring the fluid levels and I'll probably call a mechanic tomorrow but I wanted to get your opinion... Thanks!

[@kern417]

I would recommend getting it fixed but if you're diligent about checking to make sure it's not leaking then you may be able to get away with it until you can get it fixed.

[@kimpyeatt2595]

My coolant level was fine and then a month later I got the warning. Had to add 32 oz total of the 50/50 mixture. It was dry. I don't know how it went from being fine when I took my car in for regular maintenance check up in July and then bone dry a month later. Seems strange to me.

[@Jessie-vg8fk]

What was your problem? Mines having the same problem however coolant is being lost more rapidly

[@kimpyeatt2595]

@@Jessie-vg8fk I really don't know what the problem is/was. About 3 weeks ago or so had to add about 1 cup (I think) of coolant again. So it went over a year without adding any.

[@minhajuddin1769]

Wouldn’t just using a coolant sealing fluid just fix it?

[@kern417]

no

[@michaelsdao2159]

I have leak at bottom of expansion tank hose - nothing cracked suspect O-ring - how do i replace O-ring without replacing entire tank or hose. Hose seems to go into the depths of the engine and I am not keen to replace that.

[@kern417]

you can check realoem to see if one is available for your platform.

[@OA1998.]

........ bet you can guess why im here. Was driving on the way home today, got a low coolant warning. Before i even had a chance to pull over i got a engine overheating warning and immediately got put into limp mode.

[@armedessential]

I got the warning message too topping up doesn't hold any fluid in the tank, I can't see a punchure in the radiators. The big tank is dripping coolant badly from the bottom right of the car do you think it's the radiator or something else?

[@kern417]

May be a crack in the tank itself

[@superfanclub]

When adding water to make it 50/50 does it have to be distilled water?

[@kern417]

Yes

[@jimfrei8420]

Will the smaller reservoir ever need coolant added?

[@kern417]

It shouldn't unless there's a leak

[@chriss7754]

Great video

[@traveyhousen5269]

Question I’ve check the smaller tank and the coolant that’s in it is different from the one that’s in the larger one, when I say different I mean it’s clear is that serious issue?

[@kern417]

Some people see that for some reason. I'm not sure why

[@jz2639]

Hello How can i remove the coolant reservoir to replace it? TY

[@kern417]

Drain the coolant Disconnect the hoses and sensors Remove and replace

[@giowilliams7855]

I get coolant loss in my small reservoir not sure if it’s because I’m running “sport mode cooling for intercooler” on mhd but it’s like I’m topping it often , the main reservoir doesn’t move at all even after running it hot , any ideas to what the issue may be ?

[@kern417]

kzbin.info/www/bejne/lWqkg5ewr52Dn6s

[@davidzagar8499]

Hey, I have a question sry for bothering. I have b58 and mppsk, sometimes during winter there is a lot of smoke coming from exausth, yesterday engine took a second or two more to start ( otherwise no warning, plug sparks changed a year ago, i read the frequency should be set different for tuned cars) thank you in advance

[@kern417]

You'll have to work through it to diagnose if there's an issue. But it's normal for a car to take a little longer to start in the cold

[@davidzagar8499]

@@kern417 today the engine light poped up, and car is noisy, smokey and its shaking, probably bad combustion. Its still under waranty will se 🙂

[@rhyspieces2404]

Can I use the same coolant for both the engine and the intercooler tank?

[@kern417]

Yes

[@nicholasbest6168]

Ive been having these same coolant problems, took to it to a shop had a few hose replacement and I'm still have problems. It seems that the B58 only issues is the coolant issues.

[@olivergao1880]

What is going to happen if overfilled coolant? Just checked mine car is overfilled

[@kern417]

It can cause issues. Just use a turkey baster to take some out

[@ridaponce7536]

I have this message for my 2013 650i Gran Coupe "Engine coolant level too low. Risk of engine damaged. Top up the coolant at the earliest opportunity, see Owner Handbook. Caution: risk of scalding" Where do I fill the coolant, to the engine coolant or the ac coolant? Please help

[@ildrichaseron]

Oh shit. Is it supposed to be between the min and max lines? I topped it up right up to the max but not over it. 😅

[@kern417]

Up to max is perfect

[@DynastyAutoDetailing]

Just got the idrive notification so now im here lmao, its 9 degrees here so im thinking maybe its the cold? Gonna order a cap and top off 34k miles

[@cultistpriest1872]

Had a coolant leak had to keep refiling every morning but then it suddenly went away no leaks what so ever and but still get the “low coolant” notification

[@kern417]

Potentially the sensor itself is bad

[@cultistpriest1872]

@@kern417 also been getting “engine High temp” code but Only been checking the coolant reservoir not the actual Engine reservoir 👀

[@cultistpriest1872]

@@kern417 my Engine reservoir had nothing in it way below min causing my engine to overheat time to put some in