I'm having a strange issue with my door locks in my 1991 300TE.
When locking with the key or from inside, they all seem to lock fine (one after the other). Pushing the driver's side door lock down engages the others (including tailgate and fuel door) in sequence.

The problem is that 9 times out of 10 (maybe only 8) in about 30 seconds they pop back up. Now this is not a real tragedy, as I rarely lock my car, however the times I DO want to lock it (leaving it in the city or airport for extended periods of time...) This is a little annoying.

It even happens while driving! The problem is that when I open the doors again they security system turns on and the headlights flash until I lock the car from the drvr door and unlock again with key. Do you have any suggestions?

Thanks!

__________________
Current: '91 300TE 4MATIC 317k and climbing...
Former:
'81 300TD Wagon 168K "Tank"
'83 240D 216K 4spd manual "Da Bear" (aka best car ever)

"Never sweat the petty things...
and never pet the sweaty things."