ABS 4x4 braking lights on

[bmw5]

My car is pissing me off.Those warning lights came on in 135.000 kms and after making a quick search i find its a common problem for e53 and e83.It is the transfer case actuator and costs about 1000 euros!

[bmw5]

The car was connected to diagnostics and has also a problem in vanos system!
The actuator costs in bmw workshop 940 euros or 930 us dollars.Found the part in amazon for 10 us dollars lol.Gonna order it and change it at a non bmw dealer shop.
https://www.amazon.com/Transfer-Moto...ctuator+bmw+x3

[bmw5]

The actuator bought from amazon was fitted and the car runs perfectly!All warning lights are now off

[4.8iS Le Mans_NZ]

Originally Posted by bmw5

The actuator bought from amazon was fitted and the car runs perfectly!All warning lights are now off

Glad to hear this resolved your issue.
If you don't mind me tagging onto this thread, I'm looking after a friend's 2005 X3 at the moment and his car has a similar issue.
Lights are off when car starts but they come on after about 2-3 minutes of driving.
I found this suggestion while searching online and wondered if anyone else had experienced the same scenario, i.e. worn tyres causing the ABS system to go haywire due to different rolling diameter and wheel rotational speed.
Warning light problem for BMW X3 - Telegraph

The car I'm looking at has two front tyres of a different brand to the rears and they're worn almost to limits, while the rears have plenty of tread - seems to fit the above scenario.

[4.8iS Le Mans_NZ]

Just a follow-up:
Scan showed fault codes for both front wheel speed sensor gaps and steering angle sensor.
Removed, cleaned and refitted both front wheel speed sensors (found very dirty) - no more faults.

[richardb]

Here's the DIY for the $10 transfer case actuator gear replacement:

https://www.youtube.com/watch?v=UR7Vv5SQvDc