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Poor touch screen function

Read the instructions below then start the fault diagnostic procedure.

Symptom: One or more buttons do not work.

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.