Having problems with your Mercedes-Benz ML500 ?
I have a 2009 ML 500 The battery went dead we recharged it. Now my stereo says device unavailable
On some vehicles, once you take off the battery, the radio fails to function. You need to program the radio. The dealer should have given you a radio code for your car to program your radio or take the car to your dealer to have this corrected that is if it was in working condition prior to removing the battery. This is a security measure that in the event the radio is stolen, it's unserviceable.
Repair Help & Product Troubleshooting for Mercedes-Benz ML500
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