I have a 2000 mercedes s500 the trunk will open with the electronic key but not with remote i can manual close lock and pop trunk with remote while it;s open. but it ill not unlock when i close it shu

sickforvws

• 40 Answers
• Posted on Jan 30, 2009

SOURCE: 1998 s500 mercedes benz trunk will not open

Try the fuse first. If you have done this than the problem could be in the actuator on the trunk latch. Poss loose/bad wire or faulty unit? I hope this helps!

SOURCE: 2002 mercedes s500 trunk will not open

Hi there
First of all may i say i feel your pain. literally. the same thing happened to mine. here is what i did
Firstly i needed into a locked boot urgently (for wifes wheelchair)
so i cut a rectangle out of the boot put my hand in and pulled the release mechanism, that worked but left me with a hole in my boot.
I suggest that you try this instead.
remove back seat
the central locking pump is located next to the battery (black box with yellow air lines going into it.)
Unplugg the filler cap cover air line, then unplugg the boot air line and put it into the filler cap cover socket.
now when you unlock the car the boot should automatically open.
If it does not the problem it on the boot air line and you should strip the trim out of the boot to check, but you still have to get in and may have to do what i did initially.
If changing the air line worked then you will soon get tired of having to shut the boot everytime i solved this problem by routing the filler cap air line to a pnuematic switch (LEGO) This switches between the boot and the filler cap. bit naff but it works and cheaper than having to replace pump and have computer and keys re-coded total cost around £600.
op that helps

SOURCE: My 2000 Mercedes Benz S500 is dead- electronic key does not

It's not that unusual for a battery to fail that soon, and the "no lights, no nothing" says that it's the battery again. Your best bet at this point is to pull the battery and take it to the point of purchase for testing. They should either replace it under warranty or charge it for you. After you replace the battery you should have the charging/electrical system checked for possible shorts or power drains.
BillB

SOURCE: My s class 2004 mercedes

hi, if any doors, boot or bonnet is open it will not lock. there are SWITCHES that has to be set.for the system to recognize it is closed. please check all openings even windows. ONLY DO THIS IF.if the BATTERY HAS BEEN TAKEN OFF OR BATTERY HAS BEEN DISCONNECTED. the SYSTEM MAY NEED RESETTING. the battery NEGATIVE lead needs to be taken OFF and place the NEGATIVE LEAD ON THE TERMINAL (A NOISE WILL BE HEARD), the ALARM and CENTRAL LOCKING SHOULD BE RESET, if the ALARM DO'NT SOUND put the lead ON and OFF a FEW TIMES. CLAMP THE BATTERY LEAD CONNECTION TIGHT and press the ALARM BUTTON OFF and retry locking SYSTEM. this will work if everything is O. K. gerry

SOURCE: My trunk on my 2000

my truck on my s500 2000 model will not open at all, not will the key and not on the door the key doing everything it suppose to do with the windows and the sunroof, bnut them truck will not pop up could it be a fuse or is the the lock is stuck