2003 Mercedes Benz C230

Electrical problem
2003 Mercedes Benz C230 4 cyl Two Wheel Drive Automatic 53639 miles

My daughter has been driving this car without any problems. The car has never had any problems except a flat tire. Two days ago, after returning from the store, the car failed to do two things.1). Lock the door with the remote key 2). Would not operate the ign key. The only previous warning on the panel showed miles over service. I assumed it was caused by not resetting oil switch after oil change. They claimed they did not know were the switch was.

I replaced the batteries in the key, and it did not fix any of the two problems mentioned.

Any suggestions?
May 13, 2008.

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