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sprinkles08, ASE Certified Technician
Category: Mercedes
Satisfied Customers: 22372
Experience:  ASE Master and Advanced level certified. Factory trained with 15 years dealership experience
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I have a 03 Mercedes Benz E500 the key wouldn't turn the car

Customer Question

I have a 03 Mercedes Benz E500 the key wouldn't turn the car and it said ( keys calculating please wait ) we did charge the battery's of the control a week ago and the problem start yesterday
Submitted: 1 year ago.
Category: Mercedes
Expert:  sprinkles08 replied 1 year ago.

Hello and welcome to JustAnswer!

The issue is almost surely going to be the key or the electronic ignition switch. The EIS communicates with a transponder in the key which has to be validated before the key will turn and engine will start.

Has a second key been tried?