sikwan
06 Tin Can
One of the many things that I thought needed attention was a way to get the Aux Heater working using the OEM remote. There were mornings where I had to run outside in my pajamas to turn on the heater because I forgot to program the timer the night before.
Since I had done it to my other vehicle, it was time to work on the Sprinter. I was curious to see if it was possible to use the stock keyless entry system in the Sprinter for my needs. Here's what I found.
This is where the box resides; right behind the gauge cluster.
The connector that I'm interested in.
This is the pinout for the keyless entry system.
The only pins that had any usable signals on the line when pressing the remote lock and unlock buttons were 4, 9, and 10. All were 12V lines. After some more probing, I found that pins 4 and 10 didn't have any noticeable difference except 4 was active high and 10 was active low. Only pin 9 was discernable, which was good news to me.
Unlock signal off pin 9. A 114ms wide six point square wave.
Since I had done it to my other vehicle, it was time to work on the Sprinter. I was curious to see if it was possible to use the stock keyless entry system in the Sprinter for my needs. Here's what I found.
This is where the box resides; right behind the gauge cluster.
The connector that I'm interested in.
This is the pinout for the keyless entry system.
The only pins that had any usable signals on the line when pressing the remote lock and unlock buttons were 4, 9, and 10. All were 12V lines. After some more probing, I found that pins 4 and 10 didn't have any noticeable difference except 4 was active high and 10 was active low. Only pin 9 was discernable, which was good news to me.
Unlock signal off pin 9. A 114ms wide six point square wave.