cenral lock works fine with key but not with
 

i have a mb 230 ce (124c) '1988 and have a problem with the cenral lock device when a use the key it works fine on the trunk and both doors but the remote doesn't work,i replace the battery but still the same i have also another strange problem sometimes when i start the engine the whiper goes on,when i start again it stops??????Can someone help me please!!!!!!! :confused:

Unless I'm wrong, I don't think ANY 124 came with a remote or keyless entry... so that must have been put in aftermarket. Would be really hard to diagnose from here. You'll need to find the keyless entry "brain" to diagnose.

I don't know about your wiper problem.