2013 R60 all4 S. A/C suddenly stopped working. After a lot of troubleshooting I cut the white wire going to the compressor clutch and added a shovel connector. Then ran a hot wire from the battery to the shovel connector on the A/C clutch side. Nothing, then I touched the factory connector at the clutch/compressor and the clutch engaged. Put pressure on the clutch connector and it engaged, let off and it disengaged. I replaced the bad connector with a couple of shovel connectors until I could order a new one. Here's where everything went bad. I ran the hot wire to the A/C clutch again to check the connection but I grabbed the wire going back to the fuse panel. I realized I just backfed 12v into the fuse box. I disassembled the fuse panel and found the burned diode but I can't identify it. If the diode did its job as it seems, this should be a 30 cent fix. Does anyone know what the replacement would be.

 

Did you try diagnosing the car via ISTA or any BMW software. That would’ve saved you a ton of time.