High Mileage N55 : "Powertrain Malfunction"
Hi,
Today my 200,000 mile MY 2013 X3 xDrive35i reported "Drivetrain Malfunction. Drive moderately. Maximum drivetrain output not available." Scanning via BimmerLink revealed the following faults:
12 Digital Motor Electronics, 2 errors
* 133B04: Valvetronic system: no adjustment possible
* 133E10: Valvetronic system: deactivated, too frequent adjustment errors
The eccentric shaft, valvetronic motor, and eccentric shaft sensor were replaced at 170,000 and then again at 180,000 miles. For the past 1,000 miles or so we've heard what sounds like some misfiring via the exhaust system - a repeated, bassy, "thump thump thump" sound every now and then.
What do you think is the issue? Thank you.