Get Driving and parking -> Trailer hitch Guide for Mercedes GLC Class SUV First Generation (2015-2021)

Driving and parking 247

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If the lane markings are worn, dark or cov‐

ered.

If the distance to the vehicle in front is too

short and thus the lane markings cannot be

detected.

If the lane markings change quickly, e.g.

lanes branch off, cross one another or

merge.

Select Standard, Sensitive or Off.

The handling characteristics may be heavily

impaired and the trailer can become

detached. There is a risk of fatal injury.

Activating/deactivating the haptic warning

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Select Warning.

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Only install a ball coupling that meets

Activate or deactivate the function.

the permitted dimensions and has been

designed for the trailer operation

requirements.

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Trailer hitch

Notes on towing a trailer

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Do not modify the ball coupling or the

trailer hitch.

If the roadway is very narrow and winding.

Mercedes‑AMG vehicles: be sure to observe

the notes in the Supplement. Otherwise, you

may fail to recognize dangers.

Plug-in hybrid: observe the notes in the Supple‐ "Technical data" section under "Trailer hitch" for

ment. Otherwise, you may fail to recognize dan‐

gers.

Activating/deactivating Active Lane Keeping

Assist

Multimedia system:

The values approved by the manufacturer can be

found on the identification plates and in the

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5

©

Settings

Quick Access

the towing vehicle (/ page 503).

5

Active Lane Keeping Assist

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WARNING Swerving of the vehicle/

trailer combination due to increased

speed

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Activate or deactivate the function.

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WARNING Danger of accident due to

unsuitable ball coupling

Setting Active Lane Keeping Assist

Multimedia system:

If the vehicle/trailer combination swerves,

you can lose control of it.

The vehicle/trailer combination can even tip

over.

If you install an unsuitable ball coupling,

overloading of the trailer hitch and rear axle

will be the result. This is particularly the case

if the ball coupling is relatively long or angled

differently.

4

5

©

Settings

Assistance

5

Active Lane Keeping Assist

Setting the sensitivity

% The availability of this function is dependent

on the country.

248 Driving and parking

If the trailer coupling is removable, it is essential Ensure the following before starting a journey:

to comply with the operating instructions of the

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Under no circumstances should you try

to increase the speed to straighten the

vehicle/trailer combination.

Reduce speed and do not counter-steer.

If necessary, apply the brakes.

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The tire pressure on the rear axle of the tow‐

trailer coupling manufacturer.

ing vehicle is set for a maximum load

The lighting of the connected trailer is opera‐

tional

Couple and uncouple the trailer carefully. If you

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do not connect the trailer to the towing vehicle

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correctly, the trailer may become detached.

Observe the following notes on the tongue

weight:

^RVehicles without LED headlamps or MUL‐

TIBEAM LED headlamps: the headlamps

NOTE Damage to the engine as a result

of overheating

*

have been set correctly

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Do not use a tongue weight that exceeds or

In the event of increased rear axle load, the vehi‐

falls below the permissible tongue weight

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If you retrofit a trailer hitch, modifica‐

tions to the engine cooling system may

be necessary, depending on the vehicle

model.

cle/trailer combination may not exceed a maxi‐

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Use a tongue weight as close as possible to

the maximum tongue weight

mum speed of 62 mph (100 km/h) for reasons

concerning the operating permit. This also

applies in countries in which the permissible

maximum speed for vehicle/trailer combinations

is above 62 mph (100 km/h).

Do not exceed the following values:

When retrofitting a trailer hitch, observe the

fastening points on the chassis.

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Permissible trailer load

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Permissible rear axle load of the towing vehi‐

cle

Retrofitting a trailer hitch is permissible only if a

trailer load is specified in your vehicle docu‐

ments. If this is not the case, the vehicle is not

approved for trailer operation.

Further information can be obtained at a quali‐

fied specialist workshop.

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Permissible gross weight of the towing vehi‐

cle

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Permissible gross weight of the trailer

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Maximum permissible speed of the trailer

Driving and parking 249

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Attaching the ball neck

Store cover 1 so that it cannot move

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Install and secure the ball coupling as

described in the ball coupling manufac‐

turer's installation instructions.

When the ball coupling has been instal‐

led, ensure that it is correctly secured

before every trip.

around.

&

WARNING Risk of accident and injury

due to an incorrectly installed ball cou‐

pling

Observe the manufacturer's installation

instructions.

Observe the notes on loading the vehicle.

If the ball coupling is not installed and

engaged correctly, it may become detached

during travel and endanger other road users.

There is a risk of fatal injury.

Coupling up/uncoupling a trailer

Requirements:

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The vehicle is secured against rolling away.

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WARNING Risk of injury from the vehicle

level being changed

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Install and secure the ball coupling as

Attaching the ball neck

described in the ball coupling manufac‐

turer's installation instructions.

Vehicles with level control system: the

vehicle level may be changed unintentionally,

e.g. by other persons. You may become trap‐

ped if you couple up or uncouple a trailer

while the vehicle level is changing. In addi‐

tion, other people could become trapped if

their limbs are between the vehicle body and

the tires or underneath the vehicle.

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When the ball coupling has been instal‐

led, ensure that it is correctly secured

before every trip.

&

WARNING Risk of accident due to an

incorrectly installed and secured ball

coupling

When coupling up or uncoupling a trailer,

make sure that:

If the ball coupling has not been correctly

installed and secured, the trailer can become

detached.

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Remove cover 1 from the ball neck mount

in the direction of the arrow.

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The doors or tailgate are not opened or

closed.

250 Driving and parking

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Drive Away Assist

Cross Traffic Alert

Rear view camera

360° Camera

Remove the cover from the ball neck mount

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You do not initiate the level control sys‐

tem and do not operate the DYNAMIC

SELECT switch.

and store it in a safe place (/ page 249).

Position the trailer on a level surface behind

the vehicle and couple it up to the vehicle.

Establish the electrical connection between

the vehicle and the trailer.

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Do not lock or unlock the vehicle.

Vehicles without a level control system: the

ball head height will change depending on the

vehicle's load. In this case, use a trailer with a

height-adjustable drawbar.

Requirements:

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The vehicle is secured with the electric park‐

ing brake.

% Accessories can be connected to the perma‐

nent power supply up to 180 W and to the

power supply that is switched on via the igni‐

tion lock.

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The transmission is in position j.

Coupling up a trailer

The trailer will be correctly detected by the vehi‐

cle only if the following conditions are met:

Decoupling a trailer

NOTE Damage to the battery due to full

discharge

*

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The trailer is connected correctly.

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WARNING Risk of being crushed and

becoming trapped when uncoupling a

trailer

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The trailer lighting system is in working

order.

Charging the trailer battery using the power

supply of the trailer can damage the vehicle

battery.

When uncoupling a trailer with an engaged

inertia-activated brake, your hand may

become trapped between the vehicle and the

trailer drawbar.

The functions of the following systems are affec‐

ted by a correctly connected trailer:

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Do not use the vehicle's power supply

to charge the trailer battery.

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Active Lane Keeping Assist

ESP^®trailer stabilization

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Information about a suitable ball neck for

Mercedes-Benz vehicles can be obtained from a

qualified specialist workshop, e.g. an authorized

Mercedes-Benz Center.

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Do not uncouple trailers with an

engaged overrun brake.

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Parking Assist PARKTRONIC

Active Parking Assist

Blind Spot Assist or Active Blind Spot Assist

Driving and parking 251

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Uncouple the trailer.

Place the cover on the ball neck mount.

NOTE Damage when uncoupling in a

state of overrun

*

Uncoupling in a state of overrun can damage

the vehicle.

Vehicle towing instructions

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Do not uncouple trailers with an

engaged overrun brake.

The vehicle is not suitable for the use of tow bar

systems that are used for flat towing or dinghy

towing, for example. Attaching and using tow bar

systems can lead to damage on the vehicle.

When you are towing a vehicle with tow bar sys‐

tems, safe driving characteristics cannot be

guaranteed for the towing vehicle or the towed

vehicle. The vehicle-trailer combination may

swerve from side to side. Comply with the per‐

mitted towing methods (/ page 449) and the

instructions for towing with both axles on the

ground (/ page 450).

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WARNING Risk of becoming trapped

when disconnecting the trailer cable

Vehicles with level control system: The

vehicle may lower when the trailer cable is

disconnected.

This could result in you or other people

becoming trapped if your or their limbs are

between the vehicle body and the tires or

underneath the vehicle.

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Make sure that nobody is underneath

the vehicle or in the immediate vicinity

of the wheel arches when you discon‐

nect the trailer cable.

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Disconnect the electrical connection

between the vehicle and the trailer.

Driving and parking -> Trailer hitch for Your Mercedes GLC Class SUV First Generation (2015-2021)

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