Mercedes-Benz A-Class Operator's Manual page 383

& 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 of your vehicle, the following situations
can occur:
The towing eye may become detached.
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The vehicle/trailer combination may
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swerve 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.
If a vehicle must be tow started or towed away,
its permissible gross mass must not exceed the
permissible gross mass of the towing vehicle.
Information on the permissible gross mass of
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the vehicle can be found on the vehicle iden‐
tification plate ( page 419).
→
Vehicles with automatic transmission: Do
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not open the driver's door or front passenger
door, otherwise the automatic transmission
automatically shifts to position j.
Installing the towing eye ( page 383).
→
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Fasten the tow bar.
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* NOTE Damage due to incorrect connec‐
tion
Only connect the tow rope or tow bar to
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the towing eyes.
Deactivating the automatic locking mecha‐
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nism ( page 65).
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Do not activate the HOLD function.
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Deactivate Active Brake Assist (
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Vehicles with automatic transmission:
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Shift the automatic transmission to position
i.
Release the electric parking brake.
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Switch on the ignition, otherwise the steering
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wheel lock may engage.
& WARNING Risk of accident due to limi‐
ted safety-related functions during the
towing process
Safety-related functions are limited or no lon‐
ger available in the following situations:
the ignition is switched off.
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the brake system or power steering sys‐
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tem is malfunctioning.
the energy supply or the on-board electri‐
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cal system is malfunctioning.
When your vehicle is then towed away, signif‐
icantly more effort may be required to steer
and brake than is normally required.
page 158).
→
Use a tow bar.
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Make sure that the steering wheel can
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move freely, before towing the vehicle
away.
Breakdown assistance 381