Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
Hi, the sunroofs on the C class are known to fail due to faulty cables and guides. The only reprogramming that is needed is to press and hold the button to raise up the back of the sunroof for 5 seconds. If that does not get the roof working you have more serious problems. The roof will need to be disassembled to check the cables and guides.
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