The next electrical system which we will examine is the Hella GR 65 cruise control
system fitted as standard or as an option on some Rovers.
We will begin by looking at the driver operation of the system. It is controlled by this stalk switch
which can be moved both horizontally and vertically.
Let us start with the switch in the horizontal OFF position at which the system is inactive.
Pulling the switch forwards to the ON position activates the system ready for operation.
If you briefly raise the switch to the SET position as you are driving along, the speed at which you are
driving will be memorised; provided the speed exceeds the minimum required, you can now take your foot
off the accelerator pedal and the car will maintain the selected speed.
You can still accelerate the car by pressing the accelerator pedal. But as soon as you release the pedal
the cars speed will return to that at which the cruise control was set.
If you now hold the switch up in the SET position, the car will continue accelerating until the switch
is released, when the cruise control will hold the car at the new higher speed.
Braking, declutching, moving the switch briefly downwards to the OFF position, disengages the cruise control.
This will also occur if the road speed differs from the set speed by 25%. The originally set speed will
still be memorised and can be re-engaged by moving the switch horizontally to the RES (resume) position.