ESP - active in left turns after wheel bearing replacement

ESP - active in left-hand curves after wheel bearing replacement - what now?

I think the opposite is true. The work likely caused the sensor or sensor ring on the wheel to become coated with brake dust, which is distorting the signal.

I've had similar problems with the ABS before. Just remove the sensor and blow everything out with compressed air. I can't imagine any other cause. Possibly a damaged toothed wheel due to external force?

Best regards,
Uwe

Hello,
'I've experienced something similar with the ABS system before. When changing the wheel bearings, there's just too much dirt and debris in the air, and it probably ends up settling on the ESP sensor. Please definitely post what the ultimate cause turned out to be...'

I find the statement from your workshop that it is now cleaner than the other one to be unbelievable. If they try to dismiss you like that, and it turns out that statement is not true, I would suggest you find a different workshop.

Best regards,
Ralf

Hello Brösel,

During the wheel bearing replacement, the toothed ring (tone ring) may also have been damaged (keyword: runout).
When I modified my suspension in May, I was also dismayed to discover a completely crumpled sensor ring on the left front wheel. This one was completely crushed in the workshop last year during a wheel bearing replacement.
Fortunately, the deviation from the planned process seems to be still within the acceptable .

Regards,
Alex.

Okay, in my case with the ABS, after starting the car, the warning light initially didn't illuminate. Then, after several braking maneuvers, the ABS would unpredictably engage in every braking process (which was quite a fun ) until the control system realized something was wrong and completely deactivated the ABS. Only after the complete deactivation did the warning light illuminate permanently. So, I suspect that your ESP isn't completely deactivating itself, but rather only indicating malfunctions. If the lamp were to finally light up, you could at least approach the next left-hand curve in a somewhat normal way...

Brösel wrote:

What about the def. If the donor is connected, would an error message be created and the ESP light constantly illuminate, or ???

Yes and no. If the control unit receives an implausible signal, the ESP will be deactivated, and the warning light will illuminate.

This happens, for example, when a sensor is broken or the power supply cable has a loose connection.

However, if the control unit receives a signal that is only slightly distorted due to a few missing pulses, this malfunction can occur as long as the incorrect signals remain within the acceptable tolerance range.

Therefore, it is very likely that the donor crown you mentioned is responsible for this issue.

Best regards,
Uwe

Hello Brösel,

Could you please let me know what the ultimate cause of the problem was, or are you still dealing with it?

Regards,
Ralf.

Hi!
So, I haven't had any problems with ESP yet, and I don't even have any .
The gyroscope sensor does have moving parts, but it's only a few hundred nanometers in size, so I don't think you can hear it. For a cross-axis accelerometer, it's essentially the same thing...
So, the noises must be coming from a different part.

You will probably need a login code for that.

What interface are you using, and which version of VAGCOM?
Please share the data that the ECU (Engine Control Unit) outputs (part number, etc.).
VAG testers are actually unable to block anything.

I once had something similar; everything looked perfectly fine with my eyesight.
A hairline crack in the rotor caused the error. We found it by connecting the sensor to an oscilloscope... the waveform looked good, but there was always a small spike in it. This wasn't present with the other sensors, so we removed everything, installed a new rotor, and checked again. The spike was gone. Assembled and driven - the error has never occurred again.