How To Open Mercedes Trunk With Dead Battery And Key Doesn't Work!!!

Have had a few instances where folks were wondering how I got into their cars to change a dead battery. You obviously need a good key or have a car that's already open. This is only in case you need to know how to get your Mercedes' trunk open to change or jump a dead battery and your key just so happens to NOT work. This is a desperation move, be careful and it'll work every time. You're risking your car's electronics should you cause a short. I'm not responsible for irresponsible work! This method works for me, it may not work for you.

[@prodriveawayman6943]

Holy crap ! You saved the day with this video!! Thank you so much!!

[@Mastermindmoneyteam]

I appreciate your video you just saved me a lunch break but nothing with this thing for an hour just found your video and it works I didn't realize something as simple as pulling the handle when I turn the key it's always something simple thanks for the video again for

[@deanwieber883]

Agreed! I thought turning the key would open the trunk. You have to turn it and hold and then pull the trunk release. Thank you!

[@kevinh1653]

This just saved me a trip to the dealership thanks for making this video

[@phishtix452]

You out here doing the Lord's work, my guy

[@edwhidden1518]

I want thank u for posting this. Saved me a lot of money.❤🎉

[@adamlee2046]

There is an easier way. Pull the carpet back from the top on the passenger foot well. Just pull it from the top. There is a foam board and a metal plate that is held with 10mm plastic nuts. One at the top one lower left and one on the right. Remove the metal panel and there one more piece of foam. The main block from the battery is right there. Use a booster pack and attach were the top nut was. Then use a jumper wire to the thick main gauge wire and press the remote button for the truck. Takes about 5 minutes for the whole process.

[@bosleepsaround]

HOLY SHIT THANK YOU BUD! THIS IS THE ONLY THING THAT’S WORKED I’VE BEEN TRYING FOR HOURS

[@xhulibali7722]

Not all w211 have this bro

[@mainps1]

Hey numbnut that's only if you can get in the car he's explaining if you're locked out just continue to work at McDonald's and don't leave comments

[@briandent5460]

Where are you grounding

[@raedsharaya4113]

Thank you , it's really helpful

[@marjantareq4066]

you saved me today... wow. 3 seconds and I had baby stroller out. lots of love. muaaah

[@spicythai2000]

Good information. Thanks for the video.

[@mahdiessop7134]

Thanks this really helped me!! You are a life saver!!

[@artofphysics675]

Thank you mate :). Pro tip: mind the charger plastic cover over there, it will keep the circuit open. As long as red doesnt touch but metal it works

[@alexandersautotransport3709]

You saved the day. Thank you

[@EthanLeedatboycandance]

What type of cable did you use to reach the alternator?

[@j.b.9581]

Did you try putting graphite into the trunk key receptacle?? Helps the tumbler to work better.

[@Channel-kr4ml]

Thx, helped me out bro. My metal key won't work in either key holes.

[@ukaszjurys2475]

if you going to use manual key to open driver door (i have estate s211-have no lock in the rear door) then is it going to start alarm horn ?

[@akilescalo8892]

Muchas gracias!!!! 🙌🏼

[@deejaydixon854]

You are the best good look out

[@carlovincetti4538]

The metal key does work in the tumbler. Your car it may not work but in most all Mercedes, it is designed to use that key in just the case you have. Chances are the ignition was changed in your vehicle not allowing the new key to work.

[@francescopisa7442]

Thanks, great practical and well exposed solution - Francesco Italy

[@chinnielouisokoye8694]

Thank you a million times

[@chadpeterson2974]

Its was so simple and worked amazing thank you so much for the tip

[@thevan3293]

This was more than helpful. Thank you sir.

[@gregj6687]

Thanks man!! Worked perfectly on the E55 AMG!

[@chrisskljavinsh3966]

hope its going to work on mine too, coz i took off the negative terminal for winter storage and slammed the trunk without checking the boot lock

[@pr0piates615]

@chriss kliavinsh did it work for you ? I have a 05 w211 e55 amg

[@shaunthomas3826]

@@pr0piates615 amg it's a spot in the fuse box. I use it and open the trunk with the key

[@CaptWam]

Your awesome thank u!!!

[@adrianbilei8778]

Same problem i am trying to open the trunk , the car is looked and the central looking its not working because the battery is dead. I was manage to turn the metal key into the look on driver side but its not opening. On the trunk i cant even turn the key.I have done it before and it was working but this time hard look.

[@finnishyeti]

in addition, i have broken lock cabling harness, so cannot open the booth electric. any way to get inside from cabin side to open trunk manually?

[@donahue478]

Thank you!

[@bill45colt]

many thanks attach to the rear output post on alternator and then charge up,,,,,,im gonna get on this and i think im gonna make heavy lead to hang under car in a fixed but insulated position so i can get to it easily if battery dies and im stranded somewheres

[@roespengsolutions521]

Hi ,do you think it will work if mi battery its now even in the car ???

[@bobhandzus6298]

This method work great for my 2005 CL-500. Thank you.

[@ptatohed4471]

This is good but would have been helpful to see where you connect from under the car.

[@davidkaiser1358]

Thank you genius like thank subscribed

[@onlyafew]

my key is locked inside the trunk an the battery is dead what do i connect the cables to to give the battery a charge to unlock the trunk an how long do i have to wait for the charge will the trunk open when i do it

[@juang8974]

I can’t open the hood for the same reason!!! What do I do? Neither my trunk or hood open because I unplugged the battery!

[@marlainejizrawi9436]

Hi My battery is dead and my key only turns on the car. Are you in my area I need help?

[@friedrichernst6258]

You should be able to get into the car with the metal key. once inside, and start the car. Once car is started, the 'open trunk' button in door should open the trunk. If the starter battery is dead, open hood, charge the battery for a couple of hours (overnight is better). Once you get the car started, the 'open the trunk' button will open the trunk so that you can then charge the battery in the trunk. Once the car is running, the charger sends enough electricity to the aux battery to enable trunk to open. This is practically what putting charger cable on alternator does. I have never seen a case where the silver key doesn't open the door, because the silver key opens the door lock mechanically, no electricity required.

[@zodsnakeguy]

I have the same problem deadbattery and cant open the Hood with the key. Loading the aux battery overnight see if it works..

[@Kreativeorigin]

Does loading the auxiliary cable overnight worked?

[@Kreativeorigin]

I have same issue too

[@jajupa78]

So if you look close? The trunk has a release latch right above the tag. Directly in the middle, you have to turn the key clockwise, and pull the latch. Its hard to see cuz it blends in...gl folks

[@tramainwhite9338]

This should be a top comment as well.

[@drummergrl1000]

Right above what tag? My battery is dead and is in the trunk. I can't charge it until I get the trunk open.

[@williambell8698]

You saved me! I will always remember your sight

[@aurorab.m8825]

I crashed the back end I figured out how to charge it after it died because it sat for a few months but the back end is dented I think it’s stopping it from opening I can’t pry it open the keys don’t work and can’t figure out how to open it help please

[@coachknova]

If you turn the key clockwise 1/4 turn, it holds... now, with your other hand, pop the trunk. Don't go counterclockwise though it turns farther in that direction. This does not release the spring.

[@joartstewey]

Amardeep Kaleka after trying the video option and accessing the back of the alternator I found that your simple solution worked for me. Thanks. The key was not opening the trunk as I thought it would previously.

[@martinhuusfelt1783]

Thanks bro worked for me to and I did try first but couldn't open it until I saw the vid and then read your post I to remembered damn yea clockwise NOT counterclockwise + excactly that turn key and use other hand to work the release handle and voila open:) Do u know will this work to with the battery totally removed from the car?

[@muvanraj]

Dead battery, struggled for almost an hour just to open the trunk. This is a life saver tips!! Bless you!

[@jajupa78]

I think most folks are missing the release latch right next to the key...lol

[@Lew_Rywin]

Thank you 😅

[@serg2915]

Will this work for 2012 models??

[@ricklee4486]

I am not clear on the part that you are connecting the positive of the battery charger to the ground of the motor? Isn't this shorting the battery charger?

[@Gelandelocks]

sorry for getting back so late, no the positive of the charger is going to the battery lug of the alternator. this method is effectively using the alternator lug as a jump point *** though I would not use it to literally jump start a car ***. It's good enough to juice the car with power to open the trunk, etc.

[@monimaka937]

will this still work if there is no battery in the trunk?

[@thomasrose6962]

yes but if u learn how to use the key correctly you should be able to open trunk if it was not locked WITH THE KEY for example if u have valubles in glove box OR trunk..if u remove metal portion of key and insert it in the trunk tumbler turn it 90 degrees to the right and remove it . The remote part of the key will NOT open trunk without the metal part put back in the trunk lock turn CCW till its straight up and down then the remote will work but NOT the handle.so in valet mode u simple slide metal part out and give the kid only the black remote and take the metal part with u. ok pay attention here because here in the clincher.....straight up and down is the normal position of the trunk (unlocked) in this position the battery in the car does all the opening either from the remote or the button on the drivers door...To make the handle in the trunk lid work by putting key in trunk and turn it to the left while trying to open trunk by pulling the handle if you go the right direction (CCW) the key will stop only half way towards 90 degrees and the handle will suddenly feel like its catching the latch inside ..sometimees it takes alittle playing with.. THIS WILL WORK WITH DEAD OR NO BATTERY..provided the latch itself is not physically broken inside and that would have not been a sudden type of thing.. ok W220 and w221 where the latch is broken i can show where to drill a hole the size of coat hanger to release trunk latch no matter whatit works on most MB with no rear key tumbler and the hole is only 1/8 in behind license plate

[@monirobaid5809]

Hi, yesterday I was replacing the brakes on my 2003 mercedes e500 so I disconnected the battery and put the key inside the trunk so the day ended before I finished the job I started to gather my tools and put them in the trunk before it turn dark in order to finish the job tomorrow Eventually I closed the trunk while the key inside, what will you do in this situation ?

[@youripelletier6319]

What did you do?

[@tomburke4652]

All u need a battery terminal cable open the fuse box left side driver-side, connect the Red positive to the screw and negative to the shock screw.

[@dseb6133]

and what if you have broken brown wire in the trunk what is common in 211 and key wont work to?

[@bezaliel2020]

Really sucks , happened to me a few days ago and now i am stuck

[@tomking3942]

I’ll have to try it on a trunk that has been screwdrivered

[@meloball640]

Charger must be pluged in power?

[@jasperst.bernard5928]

The key will open the trunk. Turn the key clockwise then pull the latch. Or counter clockwise then pull the latch. Key is hidden I. Key fob.

[@obednnuroh3158]

Where can I find the latch

[@ugotsume]

@@obednnuroh3158 Just above the License plate

[@tramainwhite9338]

This should be a top comment.

[@DWJ2004]

@@tramainwhite9338 Yes.. after hours of trying to open my trunk by charging the battery through the floorboard, etc.. I read this and was in the trunk in 15 seconds.

[@pr0piates615]

Anyone got a video on how to do it on w211 e55 amg ?

[@jjjohnnojackson]

I took battery out and closed trunk...now what do i do? Cant get trunk open..Do i have to enter from rear seats?

[@Gelandelocks]

jjjohnnojackson no, you don’t need the battery connected, use this process and you should be able to use the remote to open the car

[@jjjohnnojackson]

ArtisanAllen thanks for reply However i tried this today and still unable to get in...no clue what to do now

[@jjjohnnojackson]

99 mercedez clk 430

[@ClassickWORLD]

@@jjjohnnojackson Did you ever figure it out? Having the same exact problem. This method doesn't work with the battery out.

[@jjjohnnojackson]

@@ClassickWORLD just saw this...the rear has a first aid kit box...i removed everthing and there is a hole...i used sheet metal cutter and opened hole enough to fit arm in...i was able to pop rear seats down pulling handle...then i squeezed in and connected battery.

[@simonthmy]

German engineering FAIL. What design team came up with a mechanical key that won't work in the lock?

[@ellisjackson3355]

I don't quite see what you connected positive to, you showed it for barely one second... Oh I think I get it now

[@SuperCparham]

I have a Mercedes e320 2004 and my key won't turn so I can't move it, is there anything I can do to fix it on my own

[@SuperCparham]

And also if the key won't turn could that be the battery or the ignition itself

[@shawna7813]

Gotta show/explain this better and slower dude. We can't see exactly where on the alternator it's connected to and where exactly the positive clamp is connected..

[@raymondwaton8872]

Bruh Frfr 😂

[@dickensnyc]

So imagine your cables and starter pack are in the trunk?

[@marlainejizrawi9436]

Palm Springs California

[@ZY_THE.KID775]

This is not working for me. Someone help please!!!

[@monimaka937]

will this still work if there is no battery in the trunk

[@Gelandelocks]

Moni Maka yes!

[@ClassickWORLD]

NO. I had to learn the hard way.

[@artofphysics675]

It does, i just did it. My battery being outside of the car. I had to go under the car to access charger but it worked. Make sure red touches only metal

[@aurorab.m8825]

It’s a Mercedes c230 98

[@jahblessin3996]

Unfortunately doesn’t work for me because my car is lowered and I don’t have tools

[@hezriharris4600]

Hi anyone have idea how to open the trunk on W211 E240 2006?My key got locked inside the trunk and the battery already dead.Tried to jump start using the jump start point,and yes other electrical parts working but not the trunk.The trunk button on driver's door and trunk latch wont open.almost give up to figure out how to open the trunk.hmmm.anyone can help to solve this issue?

[@Day-ZDuke]

Hezri Harris ...can you fold down any part of your back seats, I know some of the E class models allow it. U could possibly reach into the trunk from there. Sorry if this seems to obvious, lol, just a thought

[@hezriharris4600]

@@Day-ZDuke nope. For my w211 its totally block with the body metal even i remove the rear seats 😥

[@edwhidden1518]

If I knew how to send u money I would be happy to send you a hundred. 🎉❤

[@jacolynyang4371]

sorry but this alittle misleading :/ it should or instead of and

[@MrSimmies]

I would just get a new car!

[@mainnose]

Your gonna take a little lead and attach it to the alternator.. lights flickering..?? No further info on how to do that? Just skip over that massively important piece? Jesus that’s dumb

[@softmetals3702]

Ya those keys suck. Bad design mercedes. I found its easier with a pair of Leatherman or needle nose. Bad mercedes bad

[@drnauty11]

None of this is necessary. Insert key into trunk lock. Turn counterclockwise and push in

[@Gelandelocks]

This primary reason for this is when your trunk lock does NOT work...

[@paulzaslona8845]

very shitty cars,i never buy this again