Mercedes-Benz GLS 2020 Operator's Manual page 164

162 Driving and parking
Fording
Also observe the following information when
fording:
Drive at no more than 6 mph (10 km/h).
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Observe the maximum permissible fording
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depth ( page 502).
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Switch off automatic climate control
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( page 147).
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Ensure that a bow wave does not form as you
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drive.
Do not stop in the water and do not switch
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off the engine. Ensure the ECO start/stop
function is switched off ( page 164).
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Driving in mountainous terrain
Also observe the following information when
driving in mountainous terrain:
Observe the values of the approach/depar‐
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ture angle and of the maximum gradient
( page 502).
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Avoid high engine speeds.
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Use the braking power of the engine when
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driving downhill.
Shift to a lower gear on uphill gradients and
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on long, steep downhill gradients.
Activate DSR before driving downhill, if nec‐
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essary ( page 199).
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Checklist after driving off-road
Driving off-road places greater demands on your
vehicle than driving on normal roads. Check the
entire vehicle for damage and foreign bodies
every time after driving off-road. Foreign bodies
in the wheels or drivetrain can lead to imbalan‐
ces and therefore vibrations.
If the F or G drive program is selec‐
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ted: select another drive program.
Switch DSR off.
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Lower the vehicle level again to a level suita‐
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ble to the road conditions, e.g. to the normal
level.
Apply the brakes to dry them after fording.
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Check that the service brake is working nor‐
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mally after a long downhill stretch.
Clean the following components every time
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after driving off-road:
License plate number
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Headlamps and tail lamps
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Tires, wheels and wheel arches
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underbody
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After driving through sand, mud, water or
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gravel, have the following components
checked and cleaned:
Brake discs and brakepads
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Tires and wheels
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axle joints
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ECO start/stop function
Operation of the ECO start/stop function
Vehicles with a 48 V on-board electrical sys‐
tem (EQ Boost technology)
The engine is switched off automatically in the
following situations if all vehicle conditions for
an automatic engine stop are met:
You brake the vehicle to a standstill in trans‐
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mission position h or i.
You depress the brake pedal when traveling
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at a low speed.