Hi, I have bought a blue tooth hands free cradle and installed in the phone port of my CLS 55 AMG. Problem is that the command unit intermittently switches off. If there is a cd , the unit with play the cd upon switching on again.

the car only show a malfunction, and upon testing it resulted a fault in the GPS/PHONE cable.

We tried installing another cradle, but the command behaved the same

could any one help??