To deactivate the Speed Limiter and set it in standby mode:
Press the steering wheel button 
(2).
(2).The speed limit markings and symbols in the driver display change colour from WHITE to GREY – the speed limiter is now temporarily deactivated and the driver can exceed the maximum speed setting.
Temporary deactivation with the accelerator pedal
The speed limiter can also be temporarily deactivated and overridden with the accelerator pedal without the speed limiter first having to be set in standby mode - e.g. to be able to quickly accelerate the car out of a situation.
In which case, proceed as follows:
Fully depress the accelerator pedal and release it to interrupt acceleration when the desired speed has been reached.
In this mode, the speed limiter is still activated and the driver display's symbol is therefore WHITE.
Fully release the accelerator pedal when the temporary acceleration is finished.
The car is then engine-braked automatically to below the last stored maximum speed.