E84 DSC (4x4) TPMS Error - Solution

[x1GTA]

Hi All

I have a 2012 X1 xDrive28i with 22000km, which would show the DSC (4x4) error and TPMS warning after driving 5-10 minutes over 60km/h. The error would reset when the car was stopped and started.

The solution was a front end alignment, and steering angle sensor recalibration.

Explanation: TPMS (passive, based on wheel speed) thought the car was turning, when it was going straight. Expected a differential wheel speed, which was not there. TPMS warning subsequently disables DSC.


Hope this helps someone down the road.

[themishmosh]

Thanks. What is the steering angle calibration? Is that something the dealer can do?

I also had that error a few times but my charging system was flaky and voltage was dipping.

[x1GTA]

Originally Posted by themishmosh

Thanks. What is the steering angle calibration? Is that something the dealer can do?

I also had that error a few times but my charging system was flaky and voltage was dipping.

The steering angle calibration can be reset by the dealer, or mechanic with the appropriate scanner.

I have also heard that calibration is lost if the battery is discharged or left disconnected for long enough (whatever that is). Then at startup, a warning light is displayed requiring recalibration. This involves turning the steering wheel lock to lock - then complete.

[Mirko]

Originally Posted by x1GTA

TPMS warning subsequently disables DSC.

I dont have tpms in my winter rims. Does that means my dsc is disabled? That can't be correct.

[x1GTA]

Originally Posted by Mirko

I dont have tpms in my winter rims. Does that means my dsc is disabled? That can't be correct.

In my case, I'm in Canada - TPMS is done by wheel speed only. There are no active sensors in the wheels of Canadian X1's (at least 2012).

In the case of a car with dedicated TPMS sensors, I'm not sure what the system response is to no sensors present.

edit: Furthermore, if DSC was disabled, you would certainly see a warning! So if you don't see a warning, all systems are "go"

[themishmosh]

Originally Posted by Mirko

I dont have tpms in my winter rims. Does that means my dsc is disabled? That can't be correct.

He is talking about when the warning lights do go off. Your car enters a limp mode and power is reduced. Restarting the car returns things back to normal but sometimes for not very long.