This probably won't help, but if I recall correctly, the red and green lights alternating on the mirror mean that the security system won't let the car start. This will happen if you get in the car, and use the remote key to lock the doors. You have to wait ten minutes to start the car if you do this. Maybe your security system is on when it shouldn't be.

__________________
1996 C280 289K Traded
1997 E420 167K Traded
2001 S430 240K Traded
2010 E550 4matic 80K
2000 GMC Jimmy 198K Gone to Boneyard
2003 Camry LE 196K
2011 Mazda3 i Sport 31K