Car Key Wouldn't start engine - Mercedes-Benz Forum

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post #1 of 3 (permalink) Old 02-11-2011, 03:43 PM Thread Starter
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Date registered: Feb 2011
Vehicle: Mercedes-Benz E220 2001
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Car Key Wouldn't start engine

I left my carin for servicig recently. When I got it back Iwas able to drive home with the electronic key that I lef with the mechanic.

The next day the key wuldn't start the car. It opens the door. I thought it is the battery. I change the batteries and it stll wouldn't work.

Does anyone knows the reason for this? Is it possible to replace or repair the key I have only one no and I am anxious that if anything happens to the second key I may not be able to move the car.

Car model is E220 CDI Classic, registered in March 2001.

Many thanks.
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post #2 of 3 (permalink) Old 02-11-2011, 04:44 PM
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Date registered: May 2006
Vehicle: 2001 E320 - Brilliant Silver/Ash: 107,000+
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One of the original keys for my 2001 E-Class just stopped working entirely. At some point all of these smart keys just die. However, since yours still unlocks the doors you might have some hope. Try cleaning the contact areas of the key and ignition to see if that helps. If not some people have taken these apart and soldered connections on the circuit board. Search for "key repair" or something similar and you might find the thread(s).

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post #3 of 3 (permalink) Old 02-11-2011, 07:21 PM
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If you can't get the key to work again, you could get one from the dealership.
Just need your vin number and proof of ownership.
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