wywywywy
Active Member
Hi all,
Basically I hadn't driven the car for a couple of weeks, and the batteries probably ran a bit low. It took much longer than usual to start and lots of warning lights were on, but after a blip of the throttle they were gone.
However, the COMMAND hasn't been right since.
- In navigation, it works but there is no sound
- In audio, it shows an empty radio station list, and memory card won't read
- In telephone, it shows a blank screen
- In video, it shows an empty TV station list
I have already tried reseting (then re-configuring), and I have also tried rebooting by holding the eject button. But they didn't solve the problem.
So what could it be? And how can I find out?
Dead secondary battery? (Possible)
Hard drive fault? (Unlikely because navigation works)
Antenna or antenna amplifier fault? (But GPS works)
Software corruption? (Unlikely because navigation works)
Amplifier? (Possible)
Audio tuner or TV tuner module? (Possible)
This is a 2007 W221 S Class with the Harman Kardon system.
Thanks.
Basically I hadn't driven the car for a couple of weeks, and the batteries probably ran a bit low. It took much longer than usual to start and lots of warning lights were on, but after a blip of the throttle they were gone.
However, the COMMAND hasn't been right since.
- In navigation, it works but there is no sound
- In audio, it shows an empty radio station list, and memory card won't read
- In telephone, it shows a blank screen
- In video, it shows an empty TV station list
I have already tried reseting (then re-configuring), and I have also tried rebooting by holding the eject button. But they didn't solve the problem.
So what could it be? And how can I find out?
Dead secondary battery? (Possible)
Hard drive fault? (Unlikely because navigation works)
Antenna or antenna amplifier fault? (But GPS works)
Software corruption? (Unlikely because navigation works)
Amplifier? (Possible)
Audio tuner or TV tuner module? (Possible)
This is a 2007 W221 S Class with the Harman Kardon system.
Thanks.