bagman02

I have a 2003 C320 that was purchased new. All of a sudden, when you arm the car, it flashes the lights 3 times..after about 20 seconds the lights flashers, foglights, and interior lights continue to flash. Took it to the dealership who said I needed a new Comm Bar which cost $900 for parts and labor. Had the repair work done, took the car home and left it in the garage for the weekend. Came back from a trip and the car is flashing the lights in the garage. I am irritated that the problem was mis-diagnosed and now the battery is dead. Waiting for Roadside Assistance to send out a tech to have the car before they can tow it.

Anyone know what the possible causes are? Because the dealership is clueless...

TIA