sd77

Anyways, I'm having an issue with my comand shutting off intermittently and would appreciate any advice very much so.

When it shuts off, I have to pull the fuse in the front sam, disconnect the negative terminal on the battery, or wait for it to turn on. It only turns on when I first get in the car and never while driving.

I've attached a few




pics that show the exact comand system I have, as well as the errors that I found while in engineering mode

CaliBenzDriver

There you go! Look at the pic above regarding "CAN-B screwing your COMAND".
Excellent data collection to help yourself

Your CAN-B is loaded with enough chais that CMD can not interact.

I recall after sanitizing my CAN-B modules that CMD starts super fast unlike slow poke.

Pls scan your whole car for stored + current faults of ALL modules.
DCU + KeylessG ...

BEWARE of GOOFY CAN-B DRAINING YOUR BATTERY WHILE PARKED.... CTEK FLOAT CHARGER!!

+++++ clues ++++
What tells me its a soft-crash is your excellent reboot procedure. It's not a hard fault as it can be unfrozen by reboot.

Actually best to reboot whole car with both BATT GND disconnected (NOT shorted (-) to (+)... NIET!)

The No1 crazy chief is ... CGE/F-SAM: no fuse to reboot these guys

sd77

Can someone please tell me where I can find my auxiliary battery?

WDDKJ7DB8DF202295

CaliBenzDriver

there are 4 locations:

1. inside rear trunk floor (ECO "Motorcycle" batt)
2. engine bay in the place of main Batt.
3. dashboard driver side (small RLA batt)
4. passenger footwell (Farad caps module)

sd77

...so I disconnected the positive and negative and held them together to reset and now the comand won't turn on at all? Hmm. I attempted to pull fuse like before and nothing. Ideas? Thank you

sd77

Thank you for the info, much appreciated.

so after returning to my vehicle the stereo turned on and then shut it down immediately

CaliBenzDriver

Did you read that ....Before we conclude the priceless CMD unit needs attention, scan your chassis for faults with a LAUNCH ELITE scanner (not a $5 BT dongle!) or better Xentry.

++++ CMD vs. ESP : CMD is many folds harder to deal with than ESP! ++++++