
212Trailer towing
Fitting the ball joint (step 1)
Fig. 167 Rear bumper:
Open the cover piece
– Remove the cover piece 2
⇒ Fig. 167 on the mounting fixture
1 below the bumper as far as it will go. The cover piece is held
automatically in the open position.
– Make sure the mounting fixture is clean. If not, clean it ⇒
.
Cont ⇒ page 212, Fitting the ball joint (step 2).
WARNING
It is important to keep the mounting fixture clean. Otherwise the ball
joint may fail to engage safely and securely. This could lead to an acci-
dent.
Fitting the ball joint (step 2)
Fig. 168 Removable tow-
ing bracket: Ball joint
Fig. 169 Removable tow-
ing bracket: Ball joint
Make sure the ball joint is clean and undamaged
– Check the locking pin A
, release pin B, shaft section C and
knob D ⇒ Fig. 168 on the ball joint to make sure they are clean
and undamaged.

213
Trailer towing
The spring mechanism inside the ball joint must be in the ready
position
– Check that the red marking A
⇒ Fig. 169 on the knob is inside
the black zone marked on the ball joint.
– Check that the locking pin B
is inside the holes in the shaft
section of the ball joint.
– Check that the knob protrudes visibly from the ball joint, so that
there is a clear gap C
between the knob and the ball joint.
The ball joint can only be installed if the internal spring mechanism is in the
ready position.
Cont ⇒ page 213, Fitting the ball joint (step 3).
Fitting the ball joint (step 3)
Fig. 170 Removable tow-
ing bracket: Setting the
spring mechanism to the
"ready" position
Fig. 171 Removable tow-
ing bracket: Inserting the
ball joint
Setting the spring mechanism to the ready position (if required)
– Insert the key 1
⇒ Fig. 170 in the lock on the knob and turn it
towards the red marking.
– Pull out the knob in direction A
, hold and turn in direction Buntil the locking pin 2 engages and the release pin 3 moves
out visibly ⇒ .
Inserting the ball joint
– With the spring mechanism in the ready position, insert the ball
joint into the mounting fixture and push it upwards ⇒ Fig. 171
in the direction indicated (arrow) ⇒
. It should lock into posi-
tion automatically. You should now clearly hear it click into
place.
– Lock the ball joint by turning the key to the green marking.
– Remove the key.
Cont ⇒ page 214, Fitting the ball joint (step 4).
Safety FirstOperating instructionsPractical TipsTechnical Specifications

214Trailer towing
WARNING
● If it is not possible to set the spring mechanism to the ready position
as described above, do not use the ball joint. Please contact a special-
ised workshop.
● To avoid injury, keep your hands away from the knob or cover piece
when inserting the ball joint in the mounting fixture. Otherwise, you
could be injured.
Fitting the ball joint (step 4)
Fig. 172 Removable tow-
ing bracket: Safety check
Fig. 173 Rear bumper:
Pulling down the power
socket
Safety check
– Check that the green marking A
⇒ Fig. 172 on the knob is in-
side the black zone marked on the ball joint.
– Check that the knob is directly against the ball joint, so that
there is no gap between the knob and the ball joint (arrow).
– Check that the ball joint is locked and the key is removed so
that the knob cannot be pulled out ⇒
.
– Check that the ball joint fits tightly in the mounting fixture (try
moving it about to check).
Towing socket
– To plug in the electrical connection for the trailer, pull down the
socket below the bumper ⇒ Fig. 173.
If the safety check is not satisfactory, the ball joint must be fitted again
properly.

215
Trailer towing
WARNING
To avoid accidents, the ball joint must meet all the safety requirements
listed in the safety check. The towing bracket must not be used if any one
of these requirements is not met. If this is the case, you should contact a
specialised workshop.
Removing the ball joint
Fig. 174 Removable tow-
ing bracket: Removing
the ball joint
Fig. 175 Rear bumper:
fitting the cover piece
– Insert the key in the lock 1
⇒ Fig. 174 on the knob.
– Unlock the ball joint by turning the key to the red marking.
– Take hold of the ball joint and pull out the knob in direction A
.
– Keep hold of the knob and turn it as far as it will go in direction
B
.
– Release the knob. The spring mechanism will remain in the
ready position ⇒
.
– Pull the ball joint down out of the mounting fixture 1
⇒ Fig. 175. The cover piece will cover the mounting fixture auto-
matically 2.
– Put away the ball joint attachment under the floor panel in the
luggage compartment.
– Move the socket back up to its original position.
Safety FirstOperating instructionsPractical TipsTechnical Specifications

216Trailer towing
WARNING
● To avoid injury, keep your hands away from the locking pin and the
release pin when releasing the locking mechanism.
● Make sure that the cover piece is properly engaged on the mounting
fixture on the vehicle. Otherwise the ball joint may fail to engage secure-
ly if dirt accumulates in the mounting fixture.
Fitting a towing bracket*
It is possible to fit a towing bracket to the rear of the vehicle.
Fig. 176 Attachment
points for towing bracket
If a towing bracket is to be fitted after the vehicle is purchased, this must be
completed according to the instructions of the towing bracket manufacturer.

217
Trailer towing
The attachment points for the towing bracket A
are on the lower part of the
vehicle.
The distance between the centre of the ball coupling and the ground should
never be lower than the indicated value, even with a fully loaded vehicle
and including the maximum drawbar load.
Elevation values for securing the towing bracket:
65 mm (minimum)
403
629 mm
1112 mm (vehicle with max. load)
from 350 to 420 mm (vehicle with max. load)
1000 mm
Fitting a towing bracket
● Driving with a trailer involves an extra effort for the vehicle. Therefore,
before fitting a towing bracket, please contact a Technical Service to check
whether your cooling system needs modification.
● The legal requirements in your country must be observed (e.g. the fitting
of a separate control lamp).
● Certain vehicle components, e.g. the rear bumper, must be removed and
reinstalled. The towing bracket securing bolts must be tightened using a
torque wrench, and a power socket must be connected to the vehicle electri-
cal system. This requires specialised knowledge and tools.
● Figures in the illustration show the elevation value and the attachment
points which must be considered if you are retrofitting a towing bracket. B
CDEFG
WARNING
The towing brackets should be fitted at a specialised workshop.
● If the towing bracket is incorrectly installed, there is a serious danger
of accident.
● For your own safety, please observe the instructions provided by the
manufacturer of the towing bracket.
CAUTION
● If the power socket is incorrectly installed, this could cause damage to
the vehicle electrical system.
Note
For the Sport finish, fitting a trailer bracket is not recommended due to the
design of the bumpers.
Safety FirstOperating instructionsPractical TipsTechnical Specifications

264If and when
Changing a wheel
Preparation work
What you must do before changing a wheel.
– If you have a flat tyre or puncture, park the vehicle as far away
from the flow of traffic as possible. Choose a location that is as
level as possible.
– All occupants should leave the vehicle. They should wait in a
safe place (e.g. behind the roadside crash barrier).
– Apply the handbrake firmly.
– Engage first gear .
– When towing a trailer: Unhitch the trailer from your vehicle.
– Take the tools and the spare wheel ⇒ page 261 out of the lug-
gage compartment.
WARNING
If you have a puncture in heavy traffic, switch on the hazard warning
lights and place the warning triangle in a visible location. This is for your
own safety and also warns other road users.
CAUTION
If you have to change the tyre on a gradient, block the wheel opposite the
wheel being changed by placing a stone or similar object under it to prevent
the vehicle from rolling away.
Note
Please observe legal requirements when doing so.
Changing a wheel
Change the wheel as described below.
– Remove the wheel cover .
– Loosen the wheel bolts ⇒ page 265.
– Raise the vehicle with the jack ⇒ page 266.
– Take off the wheel with the flat tyre and then put on the spare
wheel ⇒ page 267.
– Lower the vehicle.
– Tighten the wheel bolts firmly in diagonal sequence with the
box spanner ⇒ page 265.
– Replace the cover.
After changing a wheel
After changing the wheel, there are still tasks to complete. – Place the wheel with the defective tyre in the spare wheel well
and secure it.
– Put the tools and jack back in the luggage compartment.

305
Description of specifications
Towing a trailer Trailer weights
Trailer weight
The trailer weights and drawbar loads approved are selected in intensive tri-
als according to precisely defined criteria. The approved trailer weights are
valid for vehicles in the EU for maximum speeds of 80 km/h (50 mph) (in
certain circumstances up to 100 km/h (60 mph). The figures may be differ-
ent in other countries. All data in the official vehicle documentation takes
precedence over these data at all times ⇒
.
Drawbar loads
The maximum permitted drawbar load on the ball joint of the towing bracket
must not exceed 75 kg.
In the interest of road safety, we recommend that you always tow approach-
ing the maximum drawbar load. The response of the trailer on the road will
be poor if the drawbar load is too small.
If the maximum permissible drawbar load cannot be met (e.g. with small,
empty and light-weight single axle trailers or tandem axle trailers with a
wheelbase of less than 1 metre), a minimum of 4% of the actual trailer
weight is legally required for the drawbar load.
WARNING
● For safety reasons, do not exceed the 80 km/h (50 mph) limit. This is
also valid in countries where higher speeds are permitted.
● Never exceed the maximum trailer weights or the drawbar load. If the
permissible axle load or the permissible total weight is exceeded, the
driving characteristics of the vehicle may change, leading to accidents,
injuries and damage to the vehicle.
Wheels
Tyre pressure, snow chains, wheel bolts
Tyre pressures
The sticker with the tyre pressure values can be found on the inside of the
fuel tank flap. The tyre pressure values given there are for cold tyres. The
slightly raised pressures of warm tyres must not be reduced. ⇒
Snow chains
Snow chains may be fitted only to the front wheels.
Consult the section “wheels” of this manual.
Wheel bolts
After the wheels have been changed, the tightening torque of the wheel
bolts should be checked as soon as possible with a torque wrench ⇒
.
The tightening torque for steel and alloy wheels is 120 Nm.
WARNING
● Check the tyre pressure at least once per month. Checking the tyre
pressure is very important. If the tyre pressure is too high or too low,
there is an increased danger of accidents, particularly at high speeds.
● If the tightening torque of the wheel bolts is too low, they could loos-
en while the vehicle is in motion. Risk of accident! If the tightening tor-
que is too high, the wheel bolts and threads can be damaged.
Note
We recommend that you ask your Technical Service for information about
appropriate wheel, tyre and snow chain size.
Safety FirstOperating instructionsPractical TipsTechnical Specifications