[agilbert314]

Hi,

I'm getting the error Chassis stabilization: Drive moderately on my F30 328i 2013 lately. The car has around 120k kms (75k miles).

ISTA report this error: 4809CB Wheel speed sensor: increment wheel front right and tells me to replace the wheel bearing front right.

I have replaced the speed sensor for the Parking Assistant (5DP) retrofit. I have over tighten the holding screw when doing so. Could it have affected the wheel bearing?

Thanks,
Alain

[brigade24]

I doubt that the wheel bearing would be affected by over tightening a speed sensor screw...is there any play in the front right wheel? is there a chance that the sensor broke off inside the bearing assembly. they are typically sealed units so even that is a long shot.

curious to know what this is?

[tony77298]

I got the same error in my 2018 340I not to long ago, about 2 weeks. Now when I took it to service they did end up replacing the bearing if that helps.

[agilbert314]

Originally Posted by brigade24

I doubt that the wheel bearing would be affected by over tightening a speed sensor screw...is there any play in the front right wheel? is there a chance that the sensor broke off inside the bearing assembly. they are typically sealed units so even that is a long shot.

curious to know what this is?

I haven't noticed any play. Will check.

The sensor did not broke off but did rub inside the assembly. The sensor tip is scratched.

I'm having it checked tomorrow. Will report.

[agilbert314]

Well, it appears that rust has formed into the wheel bearing and replacing it ($$) fixed the issue.