dilaxsan65

I have a 2006 ML350 and the radio keeps turning on and off, it used to turn on and work for a few days then turn off and keep repeating it self but now it completely shut off and won't turn on. I took out the radio unplugged it and plugged it back in, it would work for roughly 30 seconds and turn off again then it won't turn back on.

wannawagon

I had a similar problem on my car with the Command (is that your head unit?). It actually happened the first time when I plugged in a scanner but I think it was coincidental - the controls on the head unit were not responsive - only the steering wheel buttons would respond.

I found the only way was to disconnect battery - wait say 5 minutes - then reconnect battery.

It has happened 3 times to me (all about a week apart) but the last time it happened was about 2 months ago. I was wondering if it was ambient temperature related (Australian Summer).

I can't see anything different in disconnecting radio (and disconnecting battery) but It could be worth a try

flybd5

The Comand system is composed of more than just the head unit. There are other components in other places of the vehicle, which might explain why disconnecting the battery would help with this, but remember that when you do that there are steps to follow to reenable systems in the vehicle. READ THE OWNER'S MANUAL.

wannawagon

Ok thanks, will do.

I know this is a bit off topic but do you know of any way to turn the Bluetooth off when the key is in position 1 or removed?

I have two cars - both 2006 ML320cdi (one with command, and one with std) both with MB Bluetooth adapter under armrest. Both cars will take the phone call away from the phone handset even if the cars have been locked for hours. (means we have to turn off Bluetooth on phones)

Every other Bluetooth I have had in a car is turn off car and the Bluetooth goes to the phone handset.

Maj. Dundee

Was the phone/Bluetooth factory installed or was it retro fitted after purchase?

wannawagon

As far as I can work out both cars came with the Bluetooth box under the rear seat, and both had the Bluetooth module wiring in the arm rest.

The car with the Command came with the module installed under the armrest (when I bought it) while the other car (normal head unit) I bought a Bluetooth module for later.

They both operate the same way (ie if you walk close to car even if car is off and locked - the call will be transferred to car. - it seems weird and unproductive to me)

Maj. Dundee

Remove the beverage cup and then the stowage box and disconnect the phone.

wannawagon

Thanks for reply (sorry it took a while to get back)

Is this to permanently kill the Bluetooth adapter (under the armrest)?

or do I do something with the disconnected adapter?

flybd5

The bluetooth adapter is under the armrest. He's talking about removing the beverage cup and then the stowage box. Two completely different things.

wannawagon

I assume the connector to the Bluetooth adapter is under the stowage box, under the armrest, but I don't want to disconnect it permanently (I could just remove the Bluetooth module from the adapter).

I was hoping there was some setting somewhere that would give me the option so the Bluetooth switches off when the car is off

sclasspilot

There is, actually! This is the correct way to do it.

Create a new phone contact named "Run-on Time" (exactly as written) and set the phone number to the amount of minutes you want the bluetooth to remain on.

I have mine set to 0 and it turns off when I open the door (as I have Keyless-Go).

wannawagon

Hi Thanks for that -

Not sure if I did it right but it didn't work (on the car with Command- other car is away)

I created Run-on Time as an iPhone contact (with 0 as number) and went to car.

Car picked up phone, checked address book and Run-on Time was in there. But took key out, and even locked car but when I did a call it went through car, I also tried turning off car halfway through a call and it stayed with car.

Any thoughts?

BTW its good to see a fellow Aussie on here

sclasspilot

Hmm, not sure why it wouldn't work for you. Restart the phone and also the Viseeo dongle (button closest to the rear) to see if it helps. Unclip/reinstall the Viseeo? Also try 1 instead of 0?

wannawagon

Ok - All good thoughts - I will try all of them and let you know.

Thanks again

flybd5

I did some research and I doubt this will work. The manual for the bluetooth adapter says this:

wannawagon

Big thanks - I think you are right. I too was worried with the battery.

Is there any way this can be accessed through engineering mode on the head unit? I have tried various internet instructions on getting to this mode but none have worked so far (Australian delivery car)

I will see if I can get it scanned with STAR, I have free access to a snap-on Solus scanner but it didn't bring up anything to do with stereo/aircon etc

flybd5

STAR DIAGNOSIS. Don't waste your time trying to do anything else. Forget about the Internet for this. You want to solve it, just follow the instructions and take it to a dealer or something with the STAR DIAGNOSIS computer.

wannawagon

No worries , will do, closest dealer is 2 hours away - will see who I can find locally with a STAR

dilaxsan65

hey guys so I unplugged the radio and plugged it back in and it seems to work, but everytime I put the bass high and put the volume up it keeps shutting off then I'll have to unplug and tinker around with it to turn back on .

wannawagon

dilaxsan65

It usually shuts off when there's hard bass from the song and mostly when the volume is very high, I've tried leaving on normal listening levels and it doesn't seem to shut off. Also how can I check the voltage thruoug the dash?

flybd5

Stupid question at this point, but is this the original radio and sound system on the car? Stock? Not modified?

dilaxsan65

Yes, everything is stock no modifications have been done to the stereo, and today while driving it there seemed to be some sort of noise coming through the speakers especially as I pressed more gas, but if I turn off the radio it stops anyone know what it might be?

flybd5

This is way too weird. My hunch is that you have moisture and corrosion somewhere in the system, most likely in the power circuit. Have you scanned the computer for codes with a scanner that understands Mercedes codes (no, generic scanner won't do)?

Maj. Dundee

As flydb5 said a week ago, there is no easy way to find the problem. The codes must be read. It could be over or under voltage or any other problem.