Quote:
Originally Posted by M3PO
I have tried to reset it a bunch of times via iDrive but it doesn't seem to work. I even tried adding a little air since my tire pressures where about 2-3 PSI low and then resetting the system after that. That seemed to work for a couple of people on E90post. It didn't work for me.
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If resetting the TPM didn't work, then it's probably a faulty sensor. I had the same thing happened to me when I mounted all four tires recently. One of the sensors was damaged during mounting. As a result, the TPM malfunction warning would come on after I drove the car around for half an hour. The shop that installed the tires wasn't able to diagnose the problem due to lack of equipment. I had to bring the car back to the dealership, and they were able to figure out which sensor was at fault.