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Randomly, my radio stop working. Won't even boot. Just shows the AMG logo for a while then goes black. Then, when the car sits overnight, the battery is drained and it won't start.
Oddly, if I disconnect the battery to charge it, then reconnect, the issue goes away and the radio works fine. You can see how this makes it very difficult to pull codes... Any clues?
There is a "soft" reboot of COMMAND that requires holding down one or two buttons on the radio for at least 19 seconds (IIRC) and a "hard" reboot that requires pulling two fuses in the driver's side dashboard fuse box. That will reset your radio and might stop the battery drain if it is COMMAND causing the problem.
I had to use the "hard" reset one time in the ten years I have owned the car. Advanced search should find the procedure. That's how I found it years ago. I didn't have the battery drain but the failure to boot symptom sounds the same.
If you can't find it, let us know and I'll dig in my maintenance files to find it. Please post your results for others.
Most likely not the Command, but more likely the AGW (Audio Gateway) module in the back...There should be a fuse for that in the rear SAM, pull it and see if you still have battery drain.
had a similar experience before with the w221 s550 while driving suddenly the command stops working then restarts by its self then not working ... the reason for me was the alternator is about to die... the alternator was going on and off while driving and that caused the issue ...
my advice test you alternator to see if it doesn't stop working randomly while driving... to do that , start your car and let it idle for 10 minutes ( for the alternator to get hot ) then disconnect the battery cables and let the car idle for 10 or 15 minutes ... if it runs fine then your alternator is fine... if it worked for a few minutes then shutdown then it means the alternator stopped at that point and there is no battery to compensate for the drop in volt... and you will then need to replace your alternator.
Most likely not the Command, but more likely the AGW (Audio Gateway) module in the back...There should be a fuse for that in the rear SAM, pull it and see if you still have battery drain.
Spoiler
It sounds like your E55 may have a faulty radio or electrical component causing battery drain. Check the battery, alternator, and radio wiring. A parasitic drain might also be the issue. I was in a bind with a difficult paper, so I used https://domypaper.com/ The experience was exceptional. The writer provided a well-researched, well-organized paper that met all my requirements. The communication was smooth, and the paper was delivered ahead of schedule. The quality of work was outstanding, and I’m very pleased with the results. This service saved me a lot of stress, and I’ll definitely be using it again.
08-07-2024, 07:49 PM
