Abs, Traction Control and Tyre Pressure

[lb2419]

Hi all,
I am having issues relating to my Traction Control, ABS and Tire pressure lights.

I have an obdeleven scanner and diagnosed the rear right sensor, but having replaced it the problem partially improved but moved to the front left.

Does anyone have any ideas?

Ps, I also occasionally get an error on my dash saying Start-Stop error, potentially related?

 

[cairus]

The problem always occurs after starting? Have you checked the power supply warning?

 

[lb2419]

The problem always occurs after starting? Have you checked the power supply warning?

It usually happens after starting, it used to turn off with driving for a few minutes but now stays on permanently.

I have checked all the fuses in the box beside the battery and found nothing wrong there.

 

[cairus]

The warning concerns the battery itself. Have it checked

 

[lb2419]

The warning concerns the battery itself. Have it checked

The battery is healthy when testing with a multimeter, the light also regularly stays on for the duration of the journey.

Where is the BCU located? Perhaps there is corrosion?

 

[cairus]

a multi-meter test says nothing about the SoC of the battery

 

[lb2419]

a multi-meter test says nothing about the SoC of the battery

So we swapped my battery with my mother's car (2022). The error persisted, we also checked all fuses in the dash.

 

[cairus]

What voltage does the battery have during startup? Otherwise, you'll need the circuit diagrams. I don't think all the sensors are defective. Do a log run with all four sensor signals and KL30.