itsmeek

Usually you have to take the car to MB or call roadside. This procedure (according to roadside from Alexandria Mercedes) is NOT free. It cost me. Anyhow- I watched the tech and this is what he did below:


Just get the doors open then open the fuse console that is along the drivers door on the outside of your dashboard- the door closes on it. Pull out the 4 fuses on the left (7.5 and 5 amps) and then wait a few secs- put them back in and see if the door unlock switch works. If it does- the security system is deactivated and you can use the trunk release to open the trunk. Tech said that if those fuses don't work- pull 4 at a time till you get to the right ones. I tried it in my ml and it worked as well.


TECH MENTIONED THIS WILL WORK FOR ALL NEWER MODELS.

gottarex

noted

Rick SL55

thanks

adrianlyew

Hello itsmeek

Your instructions helped 1/2 way. I got the fusebox open, only 1 fuse wire connected -- I unplugged - waited several seconds and re-plugged. The door lock switch worked! But the trunk release did not work.

Is there anything else I need to know? I have a 2008 C300 and keys locked in trunk (I lost my spare keys)

Thanks!

biker349

you might be able to buy another key from mercedes.

dabugera

This works 100% but you actually only need to pull one fuse which is the 7.5A, third from the bottom on the left side.

truck journer

will this work on 2003 S500? Also did your alarm go off when you opened your door ? Did the alarm stop once you removed and replaced the fuses?

2thfxr

that must be why car always reminds me to take my key!

Surainder

[QUOTE=itsmeek;3397129]Usually you have to take the car to MB or call roadside. This procedure (according to roadside from Alexandria Mercedes) is NOT free. It cost me. Anyhow- I watched the tech and this is what he did below:


Just get the doors open then open the fuse console that is along the drivers door on the outside of your dashboard- the door closes on it. Pull out the 4 fuses on the left (7.5 and 5 amps) and then wait a few secs- put them back in and see if the door unlock switch works. If it does- the security system is deactivated and you can use the trunk release to open the trunk. Tech said that if those fuses don't work- pull 4 at a time till you get to the right ones. I tried it in my ml and it worked as well.


TECH MENTIONED THIS WILL WORK FOR ALL NEWER MODELS.[/QUOTE
I am over the moon. Your procedure worked 100% Many, Many, Many thanks for your post, God Bless You.

jackolo

Literally just bought my W220 this morning and locked the only keys I had in the trunk tonight
I first tried the fuses on the cabin dashboard but it didn't work for me.
I next tried the fuse box under the right rear seat and pulling the 20A fuse for the "Remote closing and locking trunk lid; Remote trunk lid release; Trunk interior non-locking switch". I pulled the fuse and reinserted a few seconds later and was actually able to pop the trunk using the button on the trunk itself.
I will now be ordering an extra set of keys!