Good evening all,
My 2003 K series R300 won't start. Looked like an immobilser fault so had it replaced with a new item. On immobiliser unit replacement car started fine, however next morning back to exactly the same problem. Now from running the car for 6 years I know once the immobiliser has disarmed when I switch the ignition on, I hear the fuel pump run for a second or two and then when I hit the starter button she fires up.
The problem is now, when the immobiliser is disarmed and I switch the ignition on, I no longer hear the fuel pump briefly run and when I press the starter button I only hear a relay click in the MFRU. I say that but on one occasion since the immobiliser replacement, the fuel pump did briefly run and she fired up.
Anyone got any idea's? Thanks in anticipation David