My car boot does not open with the central locking key this is mercedes e270 what is the problem?

Bad key? Bad lock?





Someone will have to diagnose the problem to know for sure.|||Unlock or open specifically?





There's a number of possible solutions to this or what it could be depending upon the specific spec/age of your E class. So I'll try and cover all of them.





Has it ever opened, rather than unlock, with the remote?





If it has opened using a specific button on your remote then try changing the batteries in the remote. If this doesn't work then there is a problem with the system. Or some security setting is in play (see below).





If it is supposed to unlock, but not open, with all of the other doors, then is your system in the mode that requires one press to unlock the driver door and then a second press to unlock the rest. 2 presses are required to unlock the boot.





If this still doesn't unlock the boot with all of the other doors then you may have to try different lock positions. This is done by inserting the key physically in the boot lock and trying it in all of the positions where it allows you to remove the key after doing so. Many boot locks have a setting to allow you to set them independently of the central locking system. Difficult to describe without a diagram but it may be horizontal key position. Just try all that it lets you do.





This may also be a solution if you do have a boot button on your remote.





There could also be something resembling a catch that has to be physically switched, something like a child lock catch, on the boot catch. Many manufacturers offer extra security facilities on boots with central locking systems to prevent boot raiding when waiting at lights.





I'm sure you will be able to find some solution in all this. Either that or decide that you need something fixing.|||could be same as bmw's different button on key fob opens the boot