Passenger Door wont lock or unlock

[bonesi]

Hi guys first post here and my first merc, always had pajeros but wife wanted something a little nicer

Got myself an ML270 and am in love with it so far

2 days ago the passenger door stopped locking or unlocking on either key fob, the key or the button on the centre console

Any ideas guys? it was working fine when i picked the car up the only think i have done is unplugged the merc stereo as the cd didnt work and replaced it, there was 1 plug that went into the stereo that was not needed on the new stereo but i am thinking that is not anything to do with this, just a coincidence

thanks in advance guys n gals for any help

 

[NDFR]

I'm afraid I have no suggestion for you but wanted to welcome you to the forum. Someone more useful will be along shortly.

 

[mersum1es]

In door electric problems it always worth to check wires going over the door hinge...

Are other electrics of the door working (mirror, window)?

 

[bonesi]

yes mirror and window are working, and the lock works if i push it down it locks and if i open the door with internal handle it unlocks

 

[johns E350]

I had to have a new lock fitted when it happened to mine.also was the passenger side

 

[bonesi]

bit of an update
took the door card off (nightmare) sprayed the lock with WD40 and it starts to work all be it intermittently
Johns how much did it cost to have a new lock fitted?

 

[johns E350]

bit of an update took the door card off (nightmare) sprayed the lock with WD40 and it starts to work all be it intermittently Johns how much did it cost to have a new lock fitted?

It was done under warranty they said it would be a 2 to 3 hour job sorry I can't be of any help but at M-B rates my guess would be above £300 ouch