2001 BMW X5 3.0i - Soft-Roading on the Cheap

[Jake]

Inlet valve sounds more like something in the ABS module. Likely internal wiring to a specific solenoid.

Probably worth driving down the road and graphing the wheel speed sensors to make sure those are ok (which I imagine they are).

Depending on what's available for that vehicle and that scan tool, you may be able to run an active test on each solenoid to test their operations.

Gotcha. I think the tool can do logging so I may have to take it out for a drive.

These SUVs and their E39 5-series brothers have a common issue where the ABS/DSC module shits the bed because it's located too close to some heat sources under-hood. It may be a wiring thing or something internal to the module. They can be rebuilt for like $200 so I may have to go that route.