E93 Cranks But Won't Start - Tech Tip:
Had a 2008 328i (28,000 miles) come in with a crank but no start condition. The dealer had checked everything and came up empty handed. I discovered the problem was a loose ground behind the upper half of the rear passenger's seat. I applied dielectric grease and tightened the 6mm nut (10mm hex) and the car fired right up.
Hope this helps...
P.S. My bad, E90
"Herr Doktor will see you now..."
Last edited by Doktor Bert; 11-13-2012 at 03:06 PM.