Land Rover Discovery: Speed Control Sensor
Adjustment (G1780345)
/ General Procedures
SPECIAL TOOL(S)
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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.
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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.
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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.
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Vehicles without Adaptive Speed Control System:
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PRINCIPLES OF OPERATION
For a detailed description of the Speed Control system, refer to the relevant
Description and Operation section in the workshop manual. REFER to:
Speed Control (310-03 Speed Co
REMOVAL
NOTE:
Removal steps in this procedure may contain installation details.
Make the air bag supplemental restraint system (SRS) safe.
Refer to: Standard Workshop Practices (100-00 General
Inform
SEE MORE:
PART(S)
REMOVAL
NOTES:
Some variation in the illustrations may occur, but the essential
information is always correct.
Some components shown removed for clarity.
WARNING:
Make sure to support the vehicle with axle stands.
Raise and support the vehicle.
Refer to: Specifications (414-01 Battery
Parallel parking
NOTE:
When detecting a space on the left side, then the park assist system
will only use the park assist sensors on the left side of the vehicle. If
detecting a space on the right side, then the park assist system will
only use the park assist sensors on the right side of the vehicl