P1520low severityPowertrain
Cruise Control Switch Circuit Malfunction
on 2002 Mercedes-Benz SL 3.0L I6 · RWD
What this code means
The ECU detected a malfunction in the cruise control switch circuit. The cruise control input signals are not being received or are outside expected values.
Symptoms
- Cruise control inoperative
- Check Engine Light
- Cruise control engages intermittently
Common causes
- Faulty cruise control stalk switch
- Wiring damage to steering column switches
- Clock spring failure
- Corroded connector
- ECU input circuit fault
Diagnostic steps
- Test cruise control switch signals with scan tool
- Inspect steering column connector
- Check clock spring operation
- Test switch continuity
- Inspect wiring to ECU
Repair notes
Replace the cruise control switch or repair clock spring wiring.
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P0010
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P0013
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P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
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