Mercedes-Benz A-Class 2020 Operator's Manual page 288

286 Breakdown assistance
* 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 30 mph (50 km/h)
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must not be exceeded.
A towing distance of 30 miles (50 km)
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must not be 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 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 weight must not exceed the
permissible gross weight 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 330).
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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.
Install the towing eye ( page 289).
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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.
Deactivate the automatic locking mechanism
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( page 68).
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Do not activate the HOLD function.
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Deactivate the tow-away alarm (
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Deactivate Active Brake Assist
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( page 168).
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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.
page 81).
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