Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
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If all of these issues occurred at the same time this can be an issue with one of the SAM control units/ecu's at fault needing replaced.I have seen several SAM unit failures in the past before needing replaced for electrical faults like this here.
What has to be done from here first is to have either a dealers SDS machine connected to your model to read all computers for any fault codes set.Once this has been done any codes set need to be diagnosed to help locate and repair this issue here.If you can get the codes read out and post them here this would help.In some cases a compatible scan tool that can communicate with all computers will work as well.
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