CL-Class (W215) 2000-2006: CL 500, CL 600

did you ever encounter auxillary battery malfunction on Mercedes ?

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Old 02-19-2019, 03:38 AM
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Mercedes Benz C Class
did you ever encounter auxillary battery malfunction on Mercedes ?

Good day all !

Did you experience the problem of“auxiliary battery malfunction”? this messsage is quite common on Mercedes Benz C Class 205 E Class 213 and GLC253 Models.
But it is not actually an battery problem but a voltage converter failed due to high temperature damage the capacities inside the module.
Just changed the voltage converter regulator module, problem will be fixed straight away !


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Old 02-19-2019, 07:53 AM
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2015 E400 Sedan
but it could be the aux battery as well as that is a popular problem across the various models
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