Mercedes-Benz GLS Owner's Manual page 401

398 Breakdown assistance
Towing away the vehicle with both axles on
the ground
Observe the notes on the permitted towing
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methods ( page 397).
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Make sure that the battery is connected and
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charged.
A discharged battery has the following effects:
the engine cannot be started
R
the electric parking brake cannot be released
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or applied
the automatic transmission cannot be shifted
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to position i or j
% If the automatic transmission cannot be shif‐
ted to position i, or the multifunction dis‐
play in the instrument cluster does not show
anything, the vehicle must be transported
away ( page 399). A towing vehicle with
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lifting equipment is required for vehicle
transportation.
* NOTE Damage due to towing away at
excessively high speeds or over long dis‐
tances
The drivetrain could be damaged when tow‐
ing at excessively high speeds or over long
distances.
A towing speed of 50 km/h must not
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be exceeded.
A towing distance of 50 km must not be
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exceeded.
& WARNING Risk of accident when towing
a vehicle which is too heavy
If the vehicle being tow-started or towed
away is heavier than the permissible gross
mass, the following situations can occur:
the towing eye may become detached.
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the car/trailer combination may swerve
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or even overturn.
If another vehicle is tow-started or
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towed away, its weight must not exceed
the permissible gross mass of your own
vehicle.
Information on the permissible gross mass of
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the vehicle can be found on the vehicle iden‐
tification plate ( page 427).
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Do not open the driver's door or front
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passenger door as the automatic transmis‐
sion may otherwise shift to position j auto‐
matically.
Fit the towing eye ( page 401).
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Fasten the tow bar.
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* NOTE Damage due to incorrect connec‐
tion of the tow bar
Only connect the tow rope or tow bar to
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the towing eyes.
% You can also attach the tow bar to the trailer
hitch.
Deactivate the automatic locking mechanism
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( page 85).
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Do not activate the HOLD function.
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