Mercedes-Benz GL-Class: General information
Read this section carefully before driving your vehicle off-road. Practice by driving over more gentle off-road terrain first.
Familiarize yourself with the characteristics of your vehicle and the gear shift operation before driving through difficult terrain.
The following driving systems are specially adapted to off-road driving:
• off-road drive program (for vehicles
without Off-Road Pro engineering package)
• LOW RANGE off-road gear
• off-road ABS
• off-road 4ETS
• off-road ESP®()
• hill start assist
• differential locks
• DSR (Downhill Speed Regulation)
Observe the following notes:
• Stop your vehicle and, if necessary,
select
the off-road drive program or
the LOW RANGE off-road gear before driving off-road.
• Select a vehicle level suitable for the
offroad
terrain. Make sure there is always
sufficient ground clearance to prevent
damage to the vehicle.
• Activate the differential locks.
• Check that items of luggage and loads are
stowed safely and are well secured.
• Always keep the engine running and in gear
when driving on a downhill gradient.
Activate DSR.
• Always keep the doors, tailgate, windows
and sliding sunroof closed while driving.
• Adapt your speed to the terrain. The
rougher, steeper or more ruts on the
terrain, the slower your speed should be.
• Drive slowly and at an even speed through
the water. Ensure that a bow wave does not
form as you drive.
• Drive with extreme care on unknown offroad
routes where visibility is poor. For
safety reasons, get out of the vehicle first
and survey the off-road route.
• Look out for obstacles such as rocks,
holes,
tree stumps and furrows.
• Check the depth of water before fording
rivers and streams.
• When fording, do not stop and do not
switch off the engine.
• On sand, drive quickly to overcome the
rolling resistance. Otherwise, the vehicle
could dig itself into the sand.
• Do not jump with the vehicle as this will
interrupt the vehicle's propulsion.
• Always keep the engine running and in gear
when driving on a slope.
• Do not shift the automatic transmission to
transmission position N.
Important safety notes
WARNING
Grains of sand, particles of dirt and other
abrasive materials can enter the brake system. This can lead to excessive wear
and
unpredictable braking efficiency.
After the bra ...
Checklist before driving off-road
► Engine oil level: check the engine oil
and
top it up if necessary.
The vehicle can only guarantee a smooth
supply of oil on steep stretches if there is a
sufficient level of engine oil ...
See also:
Steering
Hydraulic Power Steering
Your vehicle has hydraulic power steering. It may require maintenance. See Power
Steering Fluid .
If power steering assist is lost due to a system malfunction, the vehicle ...
Topping up the coolant
WARNING
Never remove the filler cap when the engine is hot - escaping steam or scalding
water could cause serious personal injury.
Avoid spilling antifreeze onto a hot engine - a fire may res ...
Air bag warning lamp
The air bag warning
lamp is mounted in the instrument pack, and will illuminate as a bulb check when
the ignition is turned on.
WARNING
Even with advanced air bags, children can be seriousl ...






