Land Rover Discovery Owners & Service Manuals

Land Rover Discovery: Speed Control Sensor Adjustment (G1780345) / General Procedures

Land Rover Discovery (2009–2016) Service Manual / Powertrain / Acceleration and Speed Control / Speed Control / Speed Control Sensor Adjustment (G1780345) / General Procedures

SPECIAL TOOL(S)

SPECIAL TOOL(S)

CHECK

NOTES:

  • Special tool 310-148 is graduated in 0.5 degree increments.
  • Removal steps in this procedure may contain installation details.

WARNING:

Make sure to support the vehicle with axle stands.

Raise and support the vehicle.

Refer to: Front Bumper Cover (501-19 Bumpers, Removal and Installation).

NOTE:

Make sure that the special tool is installed to the front of the speed control sensor as it is shown in the illustration to check the level.

Speed Control Sensor Adjustment (G1780345) General Procedures

Special Tool(s): 310-148

ADJUSTMENT

NOTES:

  • The speed sensor has no mechanical horizontal adjustment.
  • The speed sensor must point down by 0.5 degrees.

Speed Control Sensor Adjustment (G1780345) General Procedures

Special Tool(s): 310-148

  • From the diagnostic tool menu, select: Service Alignment Mode.
  • The follow indicator will now be flashing, this indicates that the vehicle is in "service alignment" and now requires driving.
  • The vehicle speed must be above 30 mph (48 kph).
  • Choose a road with plenty of stationary objects, like street lights, road signs, or barriers. Use an inside or outside lane.
  • Following vehicles too closely will obscure the stationary targets from the radar, a time gap of 2 seconds is recommended.
  • A straight road will produce a quicker and better result, although the process will still operate on a curved road.
  • When the flashing follow indicator light extinguishes, the ACC system is now functional, and a required vehicle speed can now be set by the driver and the ACC system will operate as normal.

Speed Control Specifications

Vehicles with Adaptive Speed Control System:

NOTE:

The speed control sensor must point down by 0.5 degrees.

Vehicles with Adaptive Speed Control System

Vehicles without Adaptive Speed Control System:

Vehicles without Adaptive Speed Control System

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