Land Rover Discovery Owners & Service Manuals

Land Rover Discovery: Automatic speed limiter (ASL)

Land Rover Discovery (2009–2016) Owner's Manual / 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.

Automatic speed limiter (ASL)

  1. 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).

  1. SET+: Press to set or increase the speed limit. The set speed limit will be displayed in the Message centre.
  2. Press (-) to decrease the speed limit.

    The set speed limit will be displayed in the Message centre.

  3. 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.

  4. CAN: Press to temporarily suspend ASL assistance. ASL can also be temporarily suspended by applying sudden, rapid acceleration (kickdown).

    READ NEXT:

     Cruise control

    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

     Adaptive cruise control

    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

     Entering follow mode

    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:

     Interior Trim and Ornamentation Rear Door Trim Panel (G1785134) / Removal and Installation

    REMOVAL CAUTION: Use a suitable trim tool. NOTES: LH illustration shown, RH is similar. Removal steps in this procedure may contain installation details. Disconnect the battery ground cable. Refer to: Specifications (414-01 Battery, Mounting and Cables, Specifications). Torque: 7 Nm N

     Exterior Trim and Ornamentation Rear Spoiler  (G1791772) - Removal

    Removal CAUTIONS: Make sure to protect the paintwork. Make sure that all openings are sealed. Use new blanking caps. Refer to: High Mounted Stoplamp (417-01, Removal and Installation). CAUTION: Do not use tools during this operation, removal of the component(s) must be carried out by hand.

    © 2019-2025 Copyright www.lrdisc.com