PART 2: HOW TO REPLACE MERCEDES C250 AIR SENSOR & 2ND MAP SENSOR

In this video, I show you how to replace your 2nd MAP sensor and Air temp sensor on your 2012-2015 Mercedes-Benz C250 1.8L 4 cylinder turbo engine. (M271 EVO engine)
Make sure you check out the Part 1 video where I show you how to clean your throttle body and replace your boost pressure sensor and 1st MAP sensor.
Yes, the c250 has 4 total sensors that affects your air/fuel ratio.
DISCLAIMER: This video and description contains affiliate links, which means that if you click on one of the product links and make a purchase, I’ll receive a small commission. This helps support the channel and allows us to continue to make videos like this. Thank you for the support!
MAP Sensor for my 2012 C250 Coupe (M271 EVO engine)
Mercedes Number: A0081530228
BOSCH Number: 0261230250
EBAY: ebay.us/sUqb6F
AMAZON: amzn.to/3mcfgKi
AIR SENSOR for my 2012 Mercedes C250 Coupe (M271 EVO engine)
Mercedes Number: 6511530028 or 0005422818
EBAY: ebay.us/xW3drb
AMAZON: amzn.to/2YmOXJk
KZbin Music
The Brothers Record - "Palmtrees"
DISCLAIMER: This video is NOT endorsed by, directly affiliated with, maintained, authorized, or sponsored by Mercedes-Benz. All of the videos on this channel are for entertainment viewing purposes only. Due to factors beyond the control of FlexxAlexander, I cannot guarantee against improper use or unauthorized modifications of this information. FlexxAlexander assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. FlexxAlexander recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of FlexxAlexander, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not FlexxAlexander.
How to remove MAP sensor Mercedes Benz C250
How to remove Boost Sensor Mercedes Benz C250
How to remove Throttle Body Mercedes Benz C250
How to remove Air Sensor Mercedes Benz C250
How to remove MAF
How to clean MAF

[@TheFlexxGarage]

FOLLOW ME!!! Website: www.FlexxAlexander.com Facebook: facebook.com/FlexxAlexander1 Instagram: instagram.com/Flexx_Alexander

[@christiancicala2396]

I really enjoy your channel and in particular the one where you change your MAP sensor. I own a 2012 c250 coupe 1.8L turbo gas. Its identical to yours. You provided a site on Ebay but it states that it will not fit my car. The # on mine is 0 261 230 251. The one on the Ebay site is 0 261 230 250. I'm have a really hard time finding this MAP sensor and Mercedes can't find them, it's on back order. Please help me out.

[@204collective6]

Thank you flexx! 🤙🏼 this is always appreciated

[@carlmcknight268]

Thanks, very informative and helpful .

[@MXF87]

Thank you! I just fixed my car - air sensor, by myself, guided by your movie. 🎉

[@TheFlexxGarage]

Excellent!

[@mohdshamshuddinmahmood1733]

very useful video for DIY. thank Flexx Alexander . i have merc c200 cgi yr 2010. I like DIY

[@philipdeg1594]

Great video

[@timkimone]

Hi there Do you know how to change turbocharger boost sensor on 2015 ML 250 bluetec ? Thanks so much

[@dvdr1985]

Hey Flex awesome vids. Thanks for posting! I got a P0171 code but car seems to be running fine. You think cleaning any of these components will fix the issue?

[@antoniotube3cosas]

Hi! Do you know how to tense the hand brake on C Coupe??? I have a really annoying nosise!!! Thank for your vídeos!!

[@ehsanravi2317]

Nice jobb

[@57RollsRoycePhantom]

Sure do miss those Saturday morning podcasts :(

[@phandes]

Hi Flexx do you have any video related to EGR valve of this model? I just can't find it from my car lol...

[@user-bw5hk5nb3k]

Hi i am big thx for your videos, a question have the m271 evo Engine no MAF Sensor ? i need know where there is or the replacement number from it ? : ( Big THX from Germany

[@wasque_m4182]

I need help gettingn to the first MAP sensor, on my 2016 C300, and I cant seem to get to it its behind a metal plate, really need your help

[@lucaszbiernat]

Does anyone know where to is IAT sensor located in W204 C350 cdi?

[@jasonhorst9154]

Flex my C250 engine fan is cycling high low frequently. Notice it a parking lot speeds. No codes and ac works fine car runs well. Maybe a relay or sensor, any ideas?

[@mitchio83]

Hey mine does that, but i think it is because when it is on the Auto setting it modulates the air to keep it a certain temp in the car. Did you figure it out?

[@daniellubeschanin5381]

Hey Flexx, do you know where the Air Sensor from the e350cdi om642 ist? Same place as your c250 ? Thank you Greets from Germanyyy

[@daniellubeschanin5381]

Code was P00AC

[@kamf9817]

Hey flexx, quick question. Did you just detach the clamp to the negative terminal to disconnect the battery? I know this may be a silly question.

[@TheFlexxGarage]

I always disconnect the battery when working in the engine bay or anything electrical. I disconnect both to be safe.

[@Chuck-tq3kq]

My air sensor had oil is that normal?

[@JuanPerez-yq1hp]

FLEXX!! What up man!! Hope you are well. Quick question. Are the map sensor and secondary map sensor both the same part (part number)? Thank you in advance man!!

[@drymanburris479]

Could definitely use an answer to this

[@chrisisho2557]

Any recommendations to fix P0068 at C250 W204 As i replaced both Map sensor and boost pressure sensor including clean Throttle Body but fualt back after one day driving especially no vacuum leaks at all

[@TheFlexxGarage]

I tried everything. I honestly think it’s an ecu probrom and it’s needs a firmware update or something. Cause I tried everything and nothing fixed it. Change sensors, went back to stock in the engine, smoke tested it for leaks, new battery, and nothing. I was scratching my head for an entire month.

[@chrisisho2557]

Thank you for your reply, please let me know if you find anything to solve this issue as not able to passing smog test

[@mikegodinez9047]

Hey flex. I changed out my 2 map sensors near the air sensor I have a 2013 C250 and when I put it all back together my car doesn't want to go over 2 rpms and I notice the hose that connects to the throttle body is getting a suction to that hose. Almost like a vacuum problem now. Any help? Wrong air sensor ? Would that even cause that?

[@TheFlexxGarage]

Don’t know. I never had that issue. If they are directly replacements, shouldn’t be a problem. You could have installed wrong parts, or connections aren’t tight, or you removed these sensors while the cars battery is still connected so that could cause faults in the ECU and codes needs to be cleared to run properly. If you can’t solve it, def get a mechanic to look at it.

[@mikegodinez9047]

@@TheFlexxGarage both turbo charge pipes collapse when I turn car on. So weird .

[@dreamdream9285]

Hi Flexx, would you tell where the mass air flow sensor it is? how to clean it? can it be replaced DIY? 🙏🏻

[@TheFlexxGarage]

theres no maf in a C250. Only 2 map sensors, 1 air sensor, 1 boost pressure sensor. Look at this video. It's Part 2 cause theres a Part 1.

[@dreamdream9285]

@@TheFlexxGarage thank you flexx!🙏🏻

[@dreamdream9285]

@@TheFlexxGarage can i clean the MAP, air and boost pressure sensors? what the detergent to clean safely?

[@olteanualexandru8034]

Hy, i got a w204 facelift and i got problem with maf sensor or something like that, i change the maf sensor with a original one( continental) and i have the same problem, before that i change the air filter,a original mb filter and the problem persist... the car have check engine light one and the engine don t have power...

[@HustlerNFTGPT]

Looks like throttle body give it a clean.

[@besmirqerimi6115]

did you scaned it for trouble codes?

[@shouryaagarwal13]

Hi can a map sensor be cleaned with mass air flow cleaner??

[@TheFlexxGarage]

I wouldn’t clean it. I rather just replace it since it’s a cheap part anyway.

[@ahmedsultan428]

Hi Flexx A few months ago, I got a CEL and when I connected my OBD, it was P0068 (MAP/MAF - Throttle Position Correlation). After watching your videos, I replaced the 2 MAP sensors, and the boost pressure sensor. The CEL is still there. I was reading online what else can cause the CEL to stay on after replacing the sensors. The only thing left to replace is the Mass Air Flow sensor but I can't locate it in the engine. Can you help me?

[@TheFlexxGarage]

Common problem that I also experienced and what sucked was that I did so many cleaning and replacement and even turned my car back to stock and nothing fixed it. It actually randomly went away on its own and never came back. I literally have no idea what was the cause.

[@Aloalo01]

The c250 dont have mass air flow sensor

[@sherwinpangilinan4079]

@@Aloalo01i been trying to find the MAF sensor didnt know it actually dont have on my c250, Got the code p0172 too rich bank 1 cant resolve the issue little help please

[@chrisisho2557]

I have same issue at my C250 and check engine back on with P0068, any idea how can solve it

[@TheFlexxGarage]

Not that I’ve seen over the years. I honestly think it has to do with a ecu software update or something. Cause I cleaned/replaced my sensor, turned my engine back to stock, and smoke tested it for leaks. Nothing solved it and it went away magically by itself. It’s probably a glitch in the ecu and it needs a firmware update.

[@stevenjackson3724]

Do you have a video on how and I get crankshaft position sensor off?

[@TheFlexxGarage]

No. But if your are getting the crank position error and long starts up…go watch this video. kzbin.info/www/bejne/qKjXcpeMq7-kms0

[@stevenjackson3724]

@@TheFlexxGarage thanks man. I actually saw that one last week. I’m at 187,000 on the dash. Think is should try it and just give it a shot?

[@TheFlexxGarage]

Damn. Yeah. The sensors are cheap anyway. I changed my crankshaft position sensor and my camshaft position sensor. They are each held on by like 2 small bolts. You should be able to find a diagram online. Just look up the sensors on a m271 evo engine. That’s the engine on a c250.

[@tourriemoses9745]

Can you tell me what this code means as far as car performance I’m having codes P0340-62/P0068-00/P0304-09 mechanic is telling me engine needs to be replaced car has a hard start and sometimes has misfire after 2300 rpm’s (hunting) hope you answer thank you

[@TheFlexxGarage]

kzbin.info/www/bejne/qKjXcpeMq7-kms0

[@juniormeds1769]

Hey man! I got my car fixed at Mercedes’. Last year my car also read p0340. It was diagnosed with a cam shaft replacement and timing chain. I couldn’t afford it at the time, a year later I went and they fixed it for free. A month later, today I got a code P0068, I wanted to ask flex if this can be related? If it would be worth going to pay for the diagnosis so they can see if it is. Got all work done at the dealer and have ever receipt ! My car doesnt feel different, just the CEL turned on.

[@juniormeds1769]

My car wouldn’t start right away, it would always make a rattle sound. And when I would speed the power would drop like my car would stutter. All that is fixed now. Changed spark plugs, fixed the cam shaft even chained my thermostat, but today that code p0068 turned on. My car has 85000 miles, 2013 c250

[@TheFlexxGarage]

P0068 is completely different and separate. I got that when I had my c250 and tried everything. Changing sensors, cleaning the throttle body, checking for vacuum leaks, and changing the air filter. Nothing worked and And weird as it sounds, it randomly went away one day by itself. 🤷🏻‍♂️ my car drove fine before and after the fault too.

[@user-ux4xm9qg9m]

Where is the mass air flow sensor located

[@TheFlexxGarage]

There’s no MAF sensor in a c250. The c250 uses different types of sensors as shown in this video and in part 1 video.

[@user-ux4xm9qg9m]

@@TheFlexxGarage are you sure I got a code for mass air flow sensor what do you recommend me to change or clean if call shakes when I drive to press on it

[@DerekFerguson-on5xr]

Is this a c250 sport???

[@TheFlexxGarage]

Yes