Originally Posted by
onehundred80
Could the brake switch on the brake pedal be faulty and failing to power the solenoid on the gear changer?
Or is there something wrong in the electrical circuit, faulty solenoid, wiring etc.?
Replacing the gear changer is required if the solenoid is faulty as it is not repairable according to the Service Manual, but they say that about lots of things which can be fixed.
I've been able to use the override for the interlock to take it for a drive. It worked fine. I neglected to mention that there is a new Mercedes brake switch installed above the brake pedal - I picked that up from a local dealership 2 weeks ago. Had this issue combined with the no crank, no start problem recently. That switch has only one of the two plugs in use. Thought that was odd, but maybe one is for diagnostics? I have tried the old switch, and the new switch both, no difference.
Possible that it is solenoid having trouble. Can that be visually inspected if I pull the trim ring and bezel off the top of the shifter? Manually close it?
My RCM just had all solenoids replaced (except horn) by tighed1. I'd like to find someone local with a code reader, or pick one up that could read the codes. Torque app on my phone and a generic bluetooth scanner only pulls P0600, I understand there probably are other specific codes stored.
Thanks onehundred80!