Mercedes-Benz GLS Owner's Manual page 202

Clean the brakes after driving off-road. If you
then notice reduced braking effect or hear
scraping noises, have the brake system checked
at a qualified specialist workshop. Adapt your
driving style to the changed braking characteris‐
tics.
* NOTE Damage caused by driving over
obstacles
The vehicle can be damaged by:
driving onto high kerbs or unpaved roads.
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quickly driving over obstacles such as
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kerbs, speed bumps or potholes.
heavy objects hitting the underbody or
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chassis components.
Do not drive over obstacles that could
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damage the vehicle.
Check the vehicle regularly for damage
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during off-road driving.
Adjust the vehicle speed to suit the
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road surface conditions.
If there is damage, consult a qualified
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specialist workshop immediately.
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ENVIRONMENTAL NOTE Environmental
damage due to non-observance of pro‐
hibition signs
Environmental protection has priority. Treat
nature with respect.
Be sure to observe prohibition signs.
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Checklist before driving off-road
Check the following points before driving off-
road:
Fuel level
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Vehicles with a diesel engine: AdBlue
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level
Engine oil level: fill engine oil to the maxi‐
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mum level to ensure full gradeability
( page 370).
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Tyre-change tool kit and spare wheel
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Tyres and wheels
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% Further information about special all-terrain
tyres for retrofitting can be obtained from a
qualified specialist workshop.
Off-road driving
Read this section before driving your vehicle off-
road. Practise by driving over more gentle off-
road terrain first.
Observe the notes on the cross-country ABS
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( page 231).
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If necessary, select the F or G drive
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program (vehicles with Off-road package)
before driving off-road (
Before driving off-road, shift the transfer
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case to the LOW RANGE off-road gear (vehi‐
cles with Off-road package) (
®
Select a vehicle level suitable for off-road ter‐
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rain ( page 269). To avoid damaging the
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vehicle, make sure there is always sufficient
ground clearance.
Always keep the engine running and in gear
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when driving on downhill gradients and
slopes. Observe the notes on driving in
mountainous terrain.
Driving and parking 199
page 207).
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page 214).
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