Fault code P0568 – a step-by-step guide to diagnosing and fixing it

Error code P0568 is displayed and the check engine light is on - what does this mean?

DTC P0568 is triggered by the OBD system when the control unit detects a problem with the cruise control set/coast switch. This fault code indicates a malfunction in the electrical circuit of the cruise control, whereby the EOBD system detects an interruption or short circuit in the signal circuit.

What can cause this fault code?

• Defective cruise control control switch on the steering wheel
• Damaged or interrupted cable in the cruise control circuit
• Corroded or loose plug connections
• Defective cruise control control unit
• Short circuit in the wiring
• Faulty earth connection
• Defective fuse in the cruise control circuit

What symptoms occur in parallel with fault code P0568?

• Cruise control does not work: The cruise control system cannot be activated or switched on
• Check engine light: The check engine light is permanently illuminated
• No response from the controls: The Set/Coast button on the steering wheel does not respond
• Intermittent function: The cruise control only works sporadically or switches off unexpectedly
• Error message in the display: "Cruise control not available" warning or similar displays

How can the problem with error code P0568 be resolved?

• The repair requires a systematic check of the cruise control system and its electrical components.
• Check and clean the plug connections: Disconnect all connections to the cruise control switch on the steering wheel, check for corrosion and clean with contact spray, then reconnect firmly
• Replace cruise control switch: Remove the defective set/coast switch on the steering wheel and replace it with a new original part, observing the airbag safety regulations
• Repair wiring: Locate damaged wiring in cruise control circuit, cut out defective sections and replace with new wiring, properly insulate all connections
• Replace cruise control module: Replace the defective cruise control module with a functional replacement part and then have it programmed
• Check fuses: Check all relevant fuses in the fuse box and replace blown fuses
• Rework earth connections: Localize poor ground connections on the cruise control system, clean contact points and tighten firmly