P0593low severityPowertrain
Cruise Control Multi-Function Input A Circuit High
on 2014 Audi Q7 3.0L Supercharged V6 · AWD
What this code means
The signal voltage from the cruise control multi-function input switch is too high. This is typically caused by an open circuit or a switch stuck in a failed state.
Symptoms
- Cruise control inoperative
- No response from cruise buttons
- Cruise fault indicator lit
Common causes
- Open circuit in switch wiring
- Faulty cruise control switch
- Loose or disconnected connector
- Broken clockspring in steering wheel
Diagnostic steps
- Retrieve stored cruise control codes
- Inspect switch wiring for opens
- Check connector seating and pins
- Verify input voltage while pressing switch
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