Question about 2007 Mercedes-Benz C230 Sedan
When ignition is off radio works but when ignition is on the radio mutes and mute button doesn't work
I would also check the mute or volume buttons on the steering wheel. spray them with a can of compressed air, hold the volume up and spray the minus and vise versa. hope this helps.
Posted on Mar 31, 2014
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Posted on Jan 02, 2017
Hi, Joe here to help. The cd changer is at fault. You need to replace the changer. The system is on a fiber optic loop which cuts out the sound if can not complete that loop.
Posted on Apr 08, 2009
They have a speed dependent volume so it does have wheel speed sensor input which could cause the wierd reverse only operation. It sounds like a software problem-I would try version coding the head unit(which will have to be done if you have a c.d. player or telephone in the car. Try to unmute it from the steering wheel buttons it may think there is a phone in the car and is muting the radio for phone operation. Your best bet is to pull codes and version code with a s.d.s. machine or at least a hand held tester but the majority of after market scan tools will not communicate with the d2b system which is your radio or sound system. good luck I hope I have been helpful
Posted on Sep 16, 2009
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