Hey there,

I attempted to install a keyless entry system in my 280E w124 yesterday. The alarm is a Vs255XR Uniden which has two central locking outputs, these go to an additional module. However, After installing the module the locking functioned perfectically. However after a few uses the locking stoped working, even with key. I disconected the battery and every thing was working again, except for one thing. The remote locking only locks, it will not unlock.

Could anyone offer some suggestions as to what to check.