Poor Touch Screen Function

Poor Touch Screen Function







Fault symptom
One or more buttons do not work.

Preconditions
Ignition ON.

Conditions
Switch Nav/Tele must be connected. There must be a power supply and grounding. Check both connectors for faulty pins and oxidation.

Diagnostic help
Steering wheel controls work.

Reset the system before starting fault diagnosis and recalibrate.

See also the description of read values under "General fault diagnosis" for more information.