Automatic speed limiter

The Automatic Speed Limiter (ASL1) function helps the driver to adapt the car's maximum speed to the speed shown on the road signs.

The Speed Limiter function (SL2) can be changed to Automatic Speed Limiter (ASL).

The automatic speed limiter uses speed information from the Road Sign Information* (RSI3) function to automatically adapt the car's maximum speed.


Even if the driver clearly sees the speed-related road sign, the speed information from the Road Sign Information* (RSI) function to ASL may be incorrect – in such cases the driver must intervene him/herself and accelerate or brake to a suitable speed.


  • The function is supplementary driver support intended to facilitate driving and make it safer – it cannot handle all situations in all traffic, weather and road conditions.
  • The driver is advised to read all sections in the Owner's Manual that relate to this function to learn about factors such as its limitations and what the driver should be aware of before using the system.
  • Driver support functions are not a substitute for the driver's attention and judgement. The driver is always responsible for ensuring the car is driven in a safe manner, at the appropriate speed, with an appropriate distance to other vehicles, and in accordance with current traffic rules and regulations.

Is SL or ASL active?

Symbols in the driver display show which speed limiter function is active:
P5-15w07-Speed Limit adapt symbol
P5-1507-Automatic Speed Limiter symbol 10x10
Sign symbol after "70" = ASL is activated.

The ASL symbol

P5-1507-Automatic Speed Limiter symbol 10x10

The sign symbol (displayed alongside the stored speed, "70", in the centre of the speedometer) can be shown in three colours with the following meanings:

Colour of sign symbolMeaning
Greenish yellowASL is active
GreyASL has been set in standby mode
OrangeASL is in temporary standby mode - e.g. due to a traffic sign not being read.
  1. 1 Automatic Speed Limiter
  2. 2 Speed Limiter
  3. * Option/accessory.
  4. 3 Road Sign Information
  5. 4 WHITE symbol: Function active, GREY symbol: Standby mode.