View Single Post
Old 10-13-2012, 11:56 AM   #4
OEM ///Member
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 22,990
My Ride: 330CiC, M5, X5, E93
Depending on how and where you measure the battery, 12 Volts reading is only about 50% level of charge. A fully charged battery should read 12.6 Volts.

You need to leave your windows and hood open and after you turn off your car, come back after 25 minutes and listen to determine if you can hear any fan motor running. There are 2 fan motors that have issue, the small one in the climate control panel and the main HVAC blower motor.

Doubt your fuel pump is an issue if you have the battery going flat.
Solve your misfires, lean codes, rough idle -

Fuel pump failures -

Temp Info -

Hidden OBC Menu - Check Voltage, Temp, Fuel Level -

E46/E39 GM5 Door Lock Info -

Lower hose temp switch O-ring - BMW #13621743299
jfoj is offline   Reply With Quote