I have tried new unit and nothing I took it to the dealer for diagnostic and the told me the unit need to be replace cost 1313.21. I have same issue with my E90 after my battery dead I jumped the car and the iDrive controller completely not working. I wonder what else I can do with INPA and ISTA before I take everthing apart…Since all was good before I took battery off, I do not expect any issues with cables etc….any help is much appreciated! Never had any issues with the controller… Fuses were checked, CIC was reseted, MOST Ring config was saved in ISTA, battery was taken off 30+ minutes….īefore I took battery off all was perfectly fine. When all was finished and I reconnected the battery, my iDrive Controller did not work anymore.

I took battery off to replace speakers in the door. Im replying here because I have similar issues in an E60. Since having the tyre pressure pop up i've been unable to reset and is driving me nuts. So what i'm going to try is to get some electrical cleaner and see if that would help. Went into the garage for the alternator and battery to be replaced, but later found that they had spilt liquid down near the controller and is quite sticky on the 4 pin wire where the connector is. What was it in the garage for? Any chance they worked under the center console? You can splice into the kcan bus (use a twisted pair from a cat-5 cable, and solder connections), and run a new connection to the controller if you need to, but I would try to find where the issue is. If there is nothing wrong with those, then the issue is with the kcan wires. The controller should have a 4 wire connector, GND/12v/KCan1-Low/KCan1-High - The first thing I would check is to make sure the GND is connecting to ground, and the 12v is actually getting 12v.

2011 bmw e90 idrive controller