DT.CLK430

My battery died and now i can't seem to open the trunk with the key. Is there any other way to get the trunk open or lower the back seats from inside the car? the battery is completely dead - ie no cabin lights or anything. Any help would be appreciated.

da_guitarist

you can't use the laser cut metal key inside your key fob to open the trunk?

raymond g-

try hooking up one of those battery supply/charger monstrosities to the
cigarette lighter for a spell. the goal is to try and induce a surface charge
sufficient to operate the trunk. and....yeah, no metal blade key?

MarcusF

There's a hot wire under the hood. The red arrow points to a cover. Remove the cover and hook 12V+ to it. Connect a ground someplace else and then you can open the hood using the switch on the console. That's assuming the blade key doesn't work.

raymond g-

even better!... tnx Marcus. i knew that terminal was in the w210s which have
battery under the seat. didn't think/knew that this was the case for the CLKs.
all the 210s with battery in trunk location gave up that terminal under the hood.
seems a good feature for all models, to me.

DT.CLK430

yeah, i tried the metal key inside the fob and it didn't work. I found that very odd. But I will try to hot wire it tomorrow. I was afraid i would have to drill out the trunk lock... so i hope it works

darksideprodigy

same happened to me just call mercedes roadside service they will come out and charge it for free

Roadraven

These guys are dead on, but if you need to open the trunk, just keep trying with the key. It took me almost an hour the first time it happenned, and it was pouring on me.

rrich49132

Same thing happened to me it took me about 45 minutes to get the trunk opened with the key. Just keep working on it.

DropTop208

Im glad they got that positive terminal under the hood. If my battery ever goes out, im screwed. I took out the truck lock and cylinder and installed a camera.

DT.CLK430

Thanks guys... i actually tried the metal key again... took like 10 mins of trying, but it finally opened! whew!

macclk

Procedure for opening the trunk with the metal key:

For those who are unsure how it works.

1) Put in the key, turn it all the way to the left (without pushing).

2) Push the key and button all the way in (the key is still turned to the left).

3) Voila! 1 open trunk :-)

SoCalw11w123

i wanna see more of this camera that you speak of!!

DropTop208

The key release for the trunk was removed, and I installed a rear view camera. I can switch my monitors over to camera anytime I want to see whats goin on in back of me. Perfect for parking, dont bump into other cars or poles you cant see with your mirror.

Roadraven

Man, I'm definitely feeling that. With the top up it's impossible to back into a parking spot. I was kind of disappointed that my car's first dent in my ownership couldn't have been prevented. Someone backed into it at a dentist's office.
Cabrios unite!

lawrdent

My battery drained after being in storage for two months. Was told that there is less drian on the battery if you lock up the auto for storage rather than leaving it unlocked. Also, the trunk locks on a lot of 430 clks are defective and begin to stick. Was told one of two things to do...first call roadside assit. because you have a lifetime of service for free for jumps and the like. 2nd and probably faster is to open the hood as suggested earlier and there is a place to charge voltage to your car to pop the trunk...for w208 there is no connection anywhere else....Also, if battery has drained you most likely have to buy a new battery....thats what I was told by the tech. but didnt believe him...charged the battery but had trouble with the battery again after about a week...got new battery and three months latter no prob.

rwestiv

I just went through that today.

The weather here in Idaho is FINALLY nice enough, and I went to take it out and the battery was dead.

I had a hell of a time with the key, but I just keep trying it and eventually it worked.

I kept thinking I was going to break it off, but I finally was so frustrated I just turned it as hard as I could and POP, it opened!

Good luck!

ML Dude

Marcus,

Thanks again! Your info. helped me out this morning. I have an older CLK Cab and don't ever need to use the valet key. I'm surprised that so many people have had problems with their keys not working, mine didn't either.

Now that I needed to, I tried the cut key in the door and no luck either? I wonder if this is a known issue I missed during my warranty period.

Rgds, Ed

newguy2008

Which battery do you recommend? Was it OEM?

krayzie_e99

yesir! thats the way to do it. i think it was you that helped me out last time my battery died. theres obviously a technique to it. but i think most of us just put in the key and turn thinking that will do the trick,but thats not the case.thanx again for that!

Jazziette

To macclk.....I can't thank you enough!
Your simple instructions were the best I found and worked just as you said. My battery was dead and I had been trying to get into my trunk for hours before I read this!

My fingers were practically bloody from trying to get that ridiculous little 'blade key' to work. Well, actually one was, as I stabbed myself with it while attempting to turn the key with a pair of needle nose pliars.

This should be in every MB Manual as to how to open the trunk with the blade key! Of course it wouldn't have helped me at the time since....the Manual was in the trunk!

Thanks so much! You made it so easy!

~ Jazziette

928Benz

I need serious help guys. Went on vacation and I had luggage stuck in my trunk. The fob doesnt work, nor does the switch on the console. And the key fits only qtr way. I willed and played with it for an hour w no luck. Dropped the car off at White Plains Mercedes in New York. They couldn't figure it out and told me they'd need to drill out the lock and replace it with a new one. I told them about maybe inducing a 12+volt surge in the box under te hood to maybe induce the trunk to open. They didn't want to do it because they thought it could create other problems. The part alone is over $300. The rest is labor. Any advice or suggestions please!!!!! I really don't want to shell out this kind of money just to get in the trunk. Thanks in advance.

00 CLK430

The Jury

Use the method above. If it only turns 1/4 way or goes in 1/4 way then you are pushing the lock in, as you are instructed not to do. Once you get the key in, make certain the lock is not pushed in as you turn the key.

MarcusF

If I'm not mistaken, some have removed the first aid kit. From there they lowered the folding rear seats. Although the Jury is right. The key will probably work.

Boosted9603

Lol, had to do that the other day when I disconnected the battery and accidentally shut the trunk. My cut key doesn't work in the trunk for some reason. Someone must have replaced the trunk lock or something.