Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
Hello my name is ***** ***** me just a minute to get some information together for you. In the meantime can you attempt to jumpstart the car to rule out low power on the cars battery for me?
It appears that the most common cause for this problem is the electronic ignition switch having failed causing it not to read the key anymore. It would be advisable to visit your local dealership since replacement of the parts require the computer of the car to be relearned with the new values.
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Last time I priced one out it was $1500 but that has been several years, the dealership would be able to determine if the key is worn too badly as well.
Unfortunately the only way to test the key/ ignition switch combination and isolate the problem is to be able to view live data on a factory scan tool.