This car has a parktronic system fault.
It displays two red leds for each corner when active, although every 30 seconds or so it powers back up correctly for a few seconds when if we are quick shows most (if not all) of the sensors are alive.
Scanned with multiscan:-
9091 unknown
9009 A42b3 Front left inner poor/ loose contact or sensor
9007 A42b3 Front left inner sensor faulty
9017 A42b8 Rear right inner not properly fastened or obstructed
901A A43b8 Left rear inner not properly fastened or obstructed
9066 unknown
9068 unknown
I cleared the codes and re-ran the self test with the vehicle in the car park and only the 9091 code returns. The Launch gives the same results also with no description for the 9091 code.
Other Mercedes controllers seem to give the 9091 code as a low voltage alarm.
Can anyone give me a description of the code for this unit. The MB part no is 164 545 0216.
My thoughts are that perhaps one sensor is drawing too much current and causing the parktronic to shut down without a code being generated for that sensor.
Shaun