Hi Guys,
After 7 years of trouble free motoring my C34 decided to not start yesterday. I noticed a fast tick sound when I turned on the ignition and the motor would crank but she wouldn't fire. After trying a couple of times I noticed the engine light was not on.
After waiting around for 10min I decided to give it a go. I turned the ignition on, the ticking/buzzing came back for a few seconds then the engine light flicked on with the rest of the light and BOOM she started.
I got it home and same thing, a buzzing sound from somewhere in the passenger area, no engine light, no start.
To me it seems like the ECU is not getting power and it may be a relay issue but I am not sure where its located or what in the front passenger area could be causing that noise. its too coincidental for them not too be linked.
If anyone can help me out with some diagrams or location of relays that would be awesome!