you are not driving on a paved or public road.
the vehicle is stationary.
the transmission is in position
.
rocker switch. Indicator lamp 
flashes. The shift request stays active for a maximum 30 seconds. If all requirements for shift operation are not fulfilled within this time, the indicator lamp switches off again and the shift operation must be started again.
. If shift operation is successful, the message LOW RANGE on appears in the instrument cluster, an audible signal sounds and indicator lamp and an indicator lamp in the instrument cluster light up continuously.
. The vehicle stays in LOW RANGE if you park the vehicle in LOW RANGE, even after the engine has been restarted.
You will not be able to switch on LOW RANGE if drive program 
or 
is switched on. The vehicle switches to drive program 
.
the engine is running and you are not driving faster than 50 km/h.
the transmission is in position
.
rocker switch. The shift request stays active for a maximum 30 seconds. If all requirements for shift operation have not been fulfilled within this time, shift operation must be started again.
. If shift operation is successful, the message LOW RANGE off appears in the instrument cluster, an audible signal sounds and the indicator lamps go out.
.