Steering wheel controls do not work

Read the instructions below then start the fault diagnostic procedure.

Symptom: Steering wheel controls do not work.

Steering wheel controls do not work

Fault symptom

Steering wheel controls 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

Touch screen works properly.

There may be a fault in the Night Panel function.

Reset the system before starting fault diagnosis and recalibrate.

Check switches for oxidation and faulty pins. Check several points and directions of the wiring harness to detect any intermittent open or short-circuits.

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