Living in Canada, my door locks were freezing so I could not get the key all the way in the door lock and could not lock my doors.
I went to Canadian Tire, it’s like a Wal-mart with an extensive parts department, and I got a remote start module for 50 CDN$ on sale - that’s like 40 US$ as of today.
What you’re looking for in these module is a "negative pulse" for the door lock and unlock. I hooked up the wires in the trunk on my 318is with the door lock and unlock wires. 12v and ground were also hooked up.
Any module with negative pulse for the doors will do.
The wires from the module are the Green and Brown ones (unlock and lock – see wiring schematic). 2 reds were tighten together and sent direct to the battery Used a loop to put the reds to the bolt that secures the battery wire. Black wire is the ground.
You don’t need to hook up all the other wires. Only 4 of them. Works Great.
You need to program the remote – Toughest part –As follow:
I needed to read the instruction on how to match the remote with the module. This step is absolutely necessary! You here a clicking sound, like a relay, from the module that mimics the parking lights going on and off. You don’t see the lights since the wires were not connected. I had to put the ignition wire on the 12v, momentarily, to mimic the ignition being on for the programming purpose. The grey wire also had to be grounded, to mimic the hood being opened, and the PAB (program assistant button) switch pressed on the module in order to program the remote – see wiring schematic. Grey wire needs to be grounded in order for the PAB to work.
I installed another ProStart module and my last car and it work np for 5 years. Including the remote start! ProSstart look like quality products.
