Land Rover Discovery: Automatic speed limiter (ASL)
ASL CONTROLS
ASL allows a speed limit to be set that the
driver does not wish to exceed. When a
speed has been set, the engine will
respond normally up to the set speed.
Further accelerator pressure will not
increase the speed beyond the set speed
unless sudden, rapid acceleration
(kickdown) is applied. If kickdown is
initiated, ASL will be suspended. ASL will
reactivate once the vehicle's speed drops
below the set speed.
In certain conditions, such as a
steep downhill gradient, the
vehicle's speed may exceed the
set speed limit. This is because
engine braking is unable to
maintain or reduce the vehicle's
speed.

- LIM: Press to switch between Cruise
control and ASL. The ASL indicator will
illuminate when ASL is active. The
Cruise control and ASL systems cannot
be used simultaneously.
When the vehicle's ignition is
switched on, the previous state,
either Cruise control or ASL, will
automatically be recalled and made
active. The set speed will not be
recalled.
Note: ASL operates at all vehicle
speeds. A vehicle speed can be set
from upwards of 32 km/h (20 mph).
- SET+: Press to set or increase the
speed limit. The set speed limit will be
displayed in the Message centre.
- Press (-) to decrease the speed limit.
The set speed limit will be displayed
in the Message centre.
- RES: Press to resume ASL assistance.
ASL will only resume if the vehicle's
speed is less than the set speed and
greater than 32 km/h (20 mph). If these
criteria are not met, a message will be
displayed in the Message centre.
- CAN: Press to temporarily suspend
ASL assistance. ASL can also be
temporarily suspended by applying
sudden, rapid acceleration (kickdown).
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In certain conditions, such as a
steep gradient, the vehicle's
speed may exceed the set cruising
speed. This is because engine
braking is unable to maintain or
reduce the vehicle's speed. Driver
inter
The Adaptive Cruise Control (ACC) system
is designed to maintain a gap from the
vehicle ahead, or a set road speed if there
is no slower vehicle ahead. A speed may
be set at between 32 km/h (20 mph) a
When in Follow mode, the vehicle
may not decelerate automatically
to a stop, nor will the vehicle
always decelerate quickly enough
to avoid a collision.
Once a set speed has been selected, the
driver
SEE MORE:
PRINCIPLES OF OPERATION
For a detailed description of the Accessory Drive Belt, refer to the relevant
Description and Operation section in the workshop manual. REFER to:
Accessory Drive (303-05B Accessory Drive - INGENIUM I4 2.0L Diesel,
Description and Operation).
INSPECTION AND VERIFICATION
WARNIN
REMOVAL
CAUTION:
Protect the surrounding paintwork to avoid damage.
NOTES:
Removal steps in this procedure may contain installation details.
Make sure the door window glass is in the fully closed position.
LHD illustration shown, RHD is similar.
Refer to: Front Door Trim Panel (501-05, Removal