My 1996 e300d with about 190k miles has an intermitant starting problem.

Sometimes the car will not start and the rearview mirrors flash red and green alternatly. Usually after a few tries the car will lights will stop flashing and the car will start. Could this be cause by the ingintion switch or some type of bad relay??? I bought the car used and do not have the electronic key so the car doors and ingition are always operated using the physical key.

As further information the car has stoped running twice when ideling at a standstill. (I have replaced the fuel filter and all glowplugs.)

Mark