Turn knurled ring (A) to ON.
The device may only be engaged in the 4th or 5th or 6th gear. Travelling downhill with the device engaged, the car speed may increase more than the memorised one.
When the device is activated, the warning light Ü on the instrument cluster turns on together with the message on the reconfigurable multifunction display (where provided) (see section “Warning lights and messages”).
See also:
Reconfigurable multifunction display
The “Multifunction display” shows all the useful information necessary when driving,
more particularly: ...
Vehicle Modifications/Alterations
WARNING!
Any modifications or alterations to this vehicle could seriously affect its
roadworthiness and safety and may lead to an accident resulting in serious injury
or death. ...
28. Tachometer
The white area of the scale shows the permissible engine revolutions-per-minute
(RPM x 1000) for each gear range.
Before reaching the red area, ease up on the accelerator to prevent engine damage. ...