Have Mercedes Questions? Ask a Mechanic for Answers ASAP
Hi, brake rotors are replaced every other brake job. As long as the brake rotors were not worn down below minimum thickness they could have been reused. Replacing the rotors at every pad replacement is usually not required. There is a special brake bleeding procedure for the CLS that can only be performed with a factory level Mercedes tester. If they have improperly flushed the brake system it will create faults in the SBC system. If the car is not at a Mercedes dealer I would suggest taking it to the dealer to have the SBC system reset with the Mercedes tester after the brake work.
Let me know if you have any questions.
One last thing. If the brake pump really has failed electronically it would not be related to the brake work.
It's possible that the pump failed during the brake flush. If they did the flush correctly they would have had to run the pump in order to flush the system. I wouldn't blame the shop for that however.
Let me know if you need anything else.
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