Component Tests and General Diagnostics

Speed Control Sensor (vehicles with adaptive system installed)
An incorrectly aligned speed control sensor can cause incorrect system operation. Before starting any repair work on the speed control system, on vehicles with the adaptive system installed, check the adjustment of the speed control sensor.
The correct function of the system depends on the operation of the speed control sensor, this requires correct alignment and an unobstructed field of view.
Customer complaints of poor system performance, late vehicle detection, late system braking, heavier than expected braking when gaining on the vehicle in front or system is detecting vehicles in adjacent lanes, may be due to the sensor pointing up or down (it should be set to level).
Check that there are no obstructions to the sensor.
Check for signs of damage to the front bumper/sensor mounting area that could indicate that the sensor has been disturbed.