1991 318is. Battery is 10 months old but wouldn’t start the car after car sat for a few days. Battery was recharged at auto parts store and passed all the tests there.
I am measuring a 0.12A current draw on the battery. Drops to 0.01A when fuse 21 is removed. Stays at 0.12A with fuse 21 installed and all remaining fuses are pulled separately. With fuse 21 installed, I still get between 0.10 and 0.12A draw after removing lights / unplugging power to the following:
- LH and RH dome lights
- trunk light
- glove box light (glove box has no flashlight)
- chime module
- analog clock (replaced OBC)
- aftermarket radio and amp (I have no antenna)
- instrument cluster (SI board batteries read 3.07 volts)
- main relay and fuel pump relay
After unplugging everything listed above, I can’t figure out what is draining the battery through fuse 21. Any suggestions on what else to unplug or test or where to start looking for corroded wires?
I am measuring a 0.12A current draw on the battery. Drops to 0.01A when fuse 21 is removed. Stays at 0.12A with fuse 21 installed and all remaining fuses are pulled separately. With fuse 21 installed, I still get between 0.10 and 0.12A draw after removing lights / unplugging power to the following:
- LH and RH dome lights
- trunk light
- glove box light (glove box has no flashlight)
- chime module
- analog clock (replaced OBC)
- aftermarket radio and amp (I have no antenna)
- instrument cluster (SI board batteries read 3.07 volts)
- main relay and fuel pump relay
After unplugging everything listed above, I can’t figure out what is draining the battery through fuse 21. Any suggestions on what else to unplug or test or where to start looking for corroded wires?
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