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thenorwegian

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Hi

after 2-3 hours of driving I used to get the sticky steering problem on my z4.

The next time I started my car after this happened, I had no powersteering and the EPS light in my dash.

Now I fixed the adjustable ecentricring on the eps motor but still have no powersteering and have the EPS light in the dash.

Is there any way to reset this fault code without scanning tools? (connecting positive battery cable to negative cable ??)

Or does this mean that the EPS motor or anglesensor or torque sensor needs to be replaced for sure, or all of them?

I also have no function in the sport button since the problem accured.

Does this mean that it is the EPS motor?


thanks in advance
 
While driving today the powersteering suddenly came back!

Turned the car off and on again and the EPS light in the dash disappered aswell :)

Guess the adjustment to the ecsentric ring did the trick :)
 
Be aware that it might be early signs of a failure of the EPS motor. Not something to worry about but if the symptoms start to repeat its something to consider.
 
Ok.
So the eps light came back on and the powersteering is gone..

Could not get any fault codes from the eps unit/motor.

Got a connection with the anglesensor, no fault on that.

I have read that you get a faultcode on the torquesensor if that one is broken. So since I dont get a reading from the eps or the torquesensor im guessing there is something wrong with the eps unit not the torquesensor.

The problem came the same day i had the car rust protected underneath.

Maybe som ground cables lost ground?

Where are the locations on ground cables?
 
Sounds about right, you can check the main ground on the engine if you want, and there's a couple of minor ones under the dash when you pull the panel out, but it sounds a lot like a motor unit fail. A rebuild is about £300 from BBA Reman of ECU Testing.
 
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