Hi all,
I have a fairly specific power steering problem on my 2004 Z4 E85, in fact, as soon as I touch my steering wheel the power steering races (engine on before touching the steering wheel, everything is fine, it's really from the moment where I start to move the steering wheel that the problem occurs) and the steering wheel starts to vibrate in all directions strongly here is a little video of what is happening:
[youtube]https://youtu.be/Zv8AwTbhAos[/ youtube]
Obviously no fault code related to the steering in Ista (I have an airbag code and two front window anti-pinch codes only), the steering motor had been changed so I checked the connections under the steering wheel, carry out programming and coding of the EPS (electric power steering) and LWS (steering angle sensor) modules which have been carried out successfully, the EPS unit communicates well with the vehicle and diagnostic network and does not display any errors in memory. I have also reset the Steering Angle Sensor (LWS) which is returning values ​​consistent with the positioning of the wheels.
After a few minutes with the steering wheel vibrating strongly, the vibrations decreased slightly and the following code appeared on Ista:
EPS 6126: Power reduction due to overload.
Does anyone have an idea because now I'm starting to dry up checking
the EPS assembly (motor + electronic card) has been replaced. Very strange thing I tried to reconnect the old motor by putting it down on the ground and the one works without racing, follow the direction I make on the steering wheel, I have swapped the two motors and once the old reassembled in its place the problem is exactly the same so here I admit completely drying up why the engine behaves normally on the ground and once plugged into the steering column it races I do not see what could be causing this, we tried everything, check the connections and the harness, this problem is really very strange.
I have a fairly specific power steering problem on my 2004 Z4 E85, in fact, as soon as I touch my steering wheel the power steering races (engine on before touching the steering wheel, everything is fine, it's really from the moment where I start to move the steering wheel that the problem occurs) and the steering wheel starts to vibrate in all directions strongly here is a little video of what is happening:
[youtube]https://youtu.be/Zv8AwTbhAos[/ youtube]
Obviously no fault code related to the steering in Ista (I have an airbag code and two front window anti-pinch codes only), the steering motor had been changed so I checked the connections under the steering wheel, carry out programming and coding of the EPS (electric power steering) and LWS (steering angle sensor) modules which have been carried out successfully, the EPS unit communicates well with the vehicle and diagnostic network and does not display any errors in memory. I have also reset the Steering Angle Sensor (LWS) which is returning values ​​consistent with the positioning of the wheels.
After a few minutes with the steering wheel vibrating strongly, the vibrations decreased slightly and the following code appeared on Ista:
EPS 6126: Power reduction due to overload.
Does anyone have an idea because now I'm starting to dry up checking
the EPS assembly (motor + electronic card) has been replaced. Very strange thing I tried to reconnect the old motor by putting it down on the ground and the one works without racing, follow the direction I make on the steering wheel, I have swapped the two motors and once the old reassembled in its place the problem is exactly the same so here I admit completely drying up why the engine behaves normally on the ground and once plugged into the steering column it races I do not see what could be causing this, we tried everything, check the connections and the harness, this problem is really very strange.
