Question about 2009 Mercedes-Benz C-Class
Reset “wrench” service light
1.) Turn the key to the on position (do not start car)
2.) Press trip reset button 3 times until service shows
3.) HOLD DOWN reset button
4.) WHILE HOLDING button, turn key off
5.) While key is in off position release the button and repress
6.) Turn key back on holding down the reset button
7.) Wait until service resets
This has to be done in 10 seconds. It may take a couple tries.
Variations include...make sure door is shut and car in neutral.
Posted on Sep 12, 2009
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Posted on Jan 02, 2017
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