Mercedes-Benz GLA Series Operator's Manual page 142

140 Driving and parking
If there is damage, consult a qualified
#
specialist workshop immediately.
When driving off-road, sand, mud and water or
water mixed with oil may get into the brakes.
This may lead to a reduction in braking effect or
total brake failure as a result of increased wear.
The braking characteristics will vary depending
on the material that has entered the system.
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 up onto high curbs or unpaved
R
roads.
quickly driving over obstacles such as
R
curbs, speed bumps or potholes.
heavy objects hitting the underbody or
R
chassis components.
Do not drive over obstacles that could
#
damage the vehicle.
Check the vehicle regularly for damage
#
during off-road driving.
Adjust the vehicle speed to suit the
#
road surface conditions.
If there is damage, consult a qualified
#
specialist workshop immediately.
+
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.
#
% The vehicle is designed for easily negotiable
and moderate off-road terrain. When driving
off-road, make sure there is sufficient
ground clearance.
Checklist before driving off-road
Check the following points before driving off-
road:
Fuel level
R
Engine oil level: fill engine oil to the maxi‐
R
mum level to ensure full gradeability
( page 232).
/
Tire-change tool kit and spare wheel
R
Tires and wheels
R
Off-road driving
Read this section before driving your vehicle off-
road. Practice by driving over more gentle off-
road terrain first.
Observe the notes on the cross-country ABS
R
( page 163).
/
If necessary, select the F (
/
R
drive program before driving off-road.
Always keep the engine running and in gear
R
when driving on downhill gradients and
slopes. Observe the notes on driving in
mountainous terrain.
page 144)