Hi everyone, from yesterday my car steering wheel behaves very odd

After starting engine steering wheel automatically turns left - on road also it pulls to left side whole car

it is easier to turn the steering wheel left then right, it is actually harder to turn right then left

Please advise if you have experience like this?

Demo Video:

https://drive.google.com/file/d/1xvo...w?usp=drivesdk

Here is also Xentry diagnosis results: https://drive.google.com/file/d/1j7_s3CS...sp=sharing

 

I don't see anything related to STEERING on your Xentry screen capture... my stupid Samsung does not play Apple MOV files

it may be caused "oil in steering harness" as we've seen recently. Steering rack are subject to many recalls year after year. See if yous falls under a recall.

Scary wild ghosts steering the car

 

Same exact feeling about ghosts while driving 😁😁

Will try to convert into .mp4

so regarding to oil do not understand where how or why until this is electric steering

thanks for your response 🙌🏼

 

electric rack

Rack module gets reset at every key cycle. See if you have any steering column faults (solderless pins)?

 

Oops I noticed some sort of oil near to engine - please tell me where is it located exactly?

please also check video I have updated it in post as well

https://drive.google.com/file/d/1xvo...w?usp=drivesdk

 

Got your video: holy crap! It is possessed

Steering rack is located at the bottom of the engine compartment where it can collect engine leaks.

Many modules can instruct the steering to turn but not when starting up! Perhaps it is trying to initialize itself but has internal failure (see RECALL).

Scan the whole car to spot other disruptions that may help steering module get in the mood (Headlights LIN faults are not it) when coms are unavailable.

Can you connect to steering and read data or is the module off-line all together??

 

Gotcha, I looked at steering rack yesterday it was clean everything no oil drains or unplugged wires all was its place

I tried teach in process using xentry - after process it improved little bit but still this strange behavior

assuming I did teaching process wrong

there was instructions something like:

turn steering to center and start car with minimum 5 km/h

after 5 meters turn steering to left lock
then beyoend the limit - left

then tuen steering to right lock
then beyond the limit - right

also surface was not so flat, was little bit uphill

Please tell me what does it mean turn steering left or right lock?

also beyond the limit?

 

I am no English major
I think "steering lock" in this context is a German translation that means all the way L or R till it stops.

 

Provide your VIN so @konigstiger can kindly look up your recall eligibility.

 

This is actual values of steering wheel

 

Nika,

While on Xentry, center the steering wheel and note down the Degrees.
Next is to turn full LEFT and full RIGHT and note each side how many Degrees,
Tell us the value

 

all the way left: 509.1 degrees
all the way right: 495.3 degrees

 

What is the Xentry center degree reading if physically steering at dead center ?

 

sorry did not get this question what is dead center?

 

I mean, make your steering wheel as center/middle as possible, and then see what is Xentry reading.

https://www.carthrottle.com/post/wmo7e5r/

 

I centered it and it was 0 [] -0.10 [] 0.10 values and then started taking turn to left then right

 

I suspect the Torque Sensor A91b1 could be the problem.
Too bad there is no Xentry test for it.

Try to disconnect it and test with engine running.

The connector to disconnect is below, I label A.




It is the same connector Cali label as 1, below




The Torque Sensor A91b1 itself is the green tick connector , but is deep inside the steering rack.



Attached all 6 documents related to EPS


The torque sensor A91b1 is the one which actually sense human steering effort and multiply it.
If say the torque sensor is out of specification and never goes to ZERO value, and instead is registering a bit LEFT value, it may do what it is doing ( whacky) now.






Example only
https://www.bosch-mobility-solutions...s%20to%20apply.



Example only


Happy troubleshooting.......

 

Thank your for such a detailed suggestion, unfortunately for 2 weeks I am unable to do so I am in place where no garage or something like this - will try to find the way to detect it via diagnostic

 

Hello, today I noticed that first time when started driving when oil was cold steering wheel was working fine, no issues no pull to right - after 5-10-20 min strange behaviour aririved back - so I remember that you was talking about oil and please tell me more about it

How can I measure oil if it is good or where / how can I cahnge the oil for steering wheel?

 

there is no steering oil used in electric steering racks. It's all operated by electricity and computers as described in selected docs kindly posted above in #17 to help you...


electric steering

The issue is when engine oil had a chance to leak into the steering harness... connections become questionable - Check if this has happened on your vehicle. Unplug steering connectors to check for oil sepage the way you would for oil in ECU harness.

 

Now I got the idea, thank you very much