R230 SL55 AMG 2003
The PSE pump fuse 71(20A) was blown. I removed the pump, it had no corrosion, looked like new, and spun up fine.
So I reinstalled and changed the fuse to 25A after reading that it was more suitable due to the high start up draw.
Now all of a sudden the internal drivers door switches do not work. I have a Carsoft III but when running diagnostics it says the drivers door DCM (left Door Control Module) is not fitted.
I have disconnected and charged both batteries, checked all fuses, reconnected, and still nothing on the door works.
Any suggestions would be much appreciated.






