[jman9895]

I NEED HELP!!

I installed a remote starter wiht keyless entry on a 93 300se sedan. The FREAKING door lock switch in the driver door wont work now! Can anyone tell me where in the door I should be looking and what color wires I should be looking at? It's been a long time since i did it and I want to fix it for her. Also, can anyone give me a brief tutorial on the signals going to the vacuum pump in the backseat?

Also, how do you unlock the trunk?

Thanks

Josh

 

[Peter Guenther]

The central lock system is activated by the infra red sensors getting a signal from the remote. It is also activated by micro switches in the locks, when you turn the key 20 degrees in the direction of locking it provides a "negative" connection to the A37 pump (under drivers rear seat) and the pump operates to provide pressure to unlock all the locks. If you turn the key in the other direction it also provides a "negative" to the control unit the pump will run in the opposite direction and provides vacuum to lock all.
The left front door actuator also has a electrical connection for the "alarm" and for the infra red.
The pump in addition to lock and unlock, provides lumbar, backup asist rod, head rest, trunk lid grip, and vacuum for the HVAC when the engine does not provide it.
There is a 21 pin connector from the doors and trunk locks, a six pin for the alarm, and another six pin for the infrared.
This pump has sensors for over pressure and vacuum needed. it also has timers for leaks, 10 second for locks, 60 seconds for other things like lumbars and things.
The trunk lock should activate if you turn the switch 90 degrees and push in. As to color codes ?, I suggest you buy the 140 DVD from Mercedes it has wiring diagrams. I have been told the pump needs to be reset by MB if it goes into safety but can not verify that. The mechanical locks are activated by rods from the diaphrams

 

[Tubers]

Peter, isn't the supply pump under the passenger's side rear seat? I guess it would depend on which side the steering wheel is located.

 

[Peter Guenther]

I guess old age kicked in, it is under passenger side rear seat in a foam housing. This one has not failed for me. I posted so many "close assists". .