Symptom And Function Description

The following conditions must be met before the engine control module (ECM) will allow cruise control to be permitted.

• Speed above 30 km/h. Max 200 km/h.
• No warning lamps must light.
• Cruise control switch on.
• The clutch and brake pedal must not be depressed.
• For the V70 (08-), the driver's seatbelt must be buckled.

In case of malfunctioning clutch sensor circuit, there may be an rpm increase when disengaging the function with the clutch pedal (manual transmission).

HINT: For more information, see  IGNITION AND CONTROL SYSTEMS - DESIGN AND FUNCTION  . 

Verification 

To verify that the symptom is in the vehicle, test drive the vehicle and check that cruise control works properly.

When test driving, check:

• "Cruise on" lights up in the Driver information module (DIM).
• Cruise control can be activated.
• Disengagement occurs correctly. Disengagement must occur if, the brake or clutch pedal is depressed and if "cruise" or the 0 button on the steering wheel are pressed.
• No rpm search takes place when disconnecting the function using the clutch pedal (manual transmission).
• The speed is adapted to the vehicle in front (applies to adaptive cruise control).