I can turn the key, but the car won’t start.Unable To Turn The Key, Unable To Start The Car.The key may turn, but the instrument cluster lights don’t turn on.The key doesn’t turn during cold weather.The key does not turn in the ignition due to failed EIS.Possible symptoms of a failed Mercedes-Benz include:

This problem can affect various Mercedes-Benz models, including E-Class, S-Class, C-Class, CLK-Class, ML-Class, SL-Class, etc.

This issue is often caused by a defective key, a bad shifter module, a failed Electronic Ignition Switch (EIS), the EIS-EZS, or a bad steering lock module (ESL). A problem that Mercedes-Benz owners may face is the key no longer turns in the ignition.