Page 191 of 284
185
Driving and operation
Picture no: 18391s.tif
Checking the tensioning of the coupling ball barzThe rotary lever rests on the coupling
ball bar.
z Green marking on the rotary lever is not
visible.
z Locking pin at the top of the coupling
ball bar is set inwards.
z The key is in the lock.
Picture no: 18392s.tif
Otherwise, the coupling ball bar must be
tensioned before it is inserted into the
coupling housing:
z Place the key in the lock and unlock the
coupling ball bar.
z Push the rotary lever onto the coupling
ball bar and rotate right while pressed
down until it engages. The key remains in
the lock.
Picture no: 18393s.tif
Inserting the coupling ball bar
Insert the tensioned coupling ball bar in the
housing and push firmly upwards until it
audibly engages.
The rotary lever moves quickly back into its
starting position on its own.
9
Warning
Do not touch rotary handle during
insertion.
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Page 192 of 284
186 Driving and operation
Picture no: 18394s.tif
Green marking on the rotary lever is visible.
Lock coupling ball bar and remove key. Check that the coupling ball bar is correctly
installedz
Green marking on the rotary lever is
visible.
z There must be no gap between the
rotary handle and th e coupling ball bar.
z The coupling ball bar must be firmly
engaged in the opening.
z The coupling ball bar must be locked
and the key removed.
Picture no: 18397s.tif
Eye for break-away stopping cable
In the case of trailers/caravans with brakes,
attach breakaway stopping cable to eye.
9
Warning
Towing a caravan/trailer is only per-
mitted with a properly fitted coupling
ball bar. If the coupling ball bar cannot
be correctly fitted, please contact a
workshop for assistance.
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Page 193 of 284

187
Driving and operation
Picture no: 18395s.tif
Dismounting the coupling ball bar
Place the key in the lock and unlock the
coupling ball bar.
Push the rotary lever onto the coupling ball
bar and rotate right while pressed down
until it engages. Pull out the ball bar
downwards.
Insert sealing plug in opening for coupling
ball bar. Close socket 3184, Fig. 18390 S.
Place cover on bumper and push both
bolts outwards.
Picture no: 18396s.tif
Stowage of coupling ball bar
Fit protective cap 3 over rotary lever with
key.
Stow coupling ball bar in bag and place in
spare wheel well, and se cure bag to lashing
eyes in luggage compartment.
Lashing eyes 356
Caravan/trailer towingCaravan and trailer loads
1)
The permissible caravan/trailer loads are
vehicle and engine-dependent maximum
values which must not be exceeded. The
actual caravan/trailer load is the difference
between the actual gross weight of the
caravan/trailer and the actual coupling
socket load with the caravan/trailer
coupled.
The permissible caravan/trailer loads are
specified in the vehicle documents. In
general, they are valid for gradients up to
maximum 12 %. 1)Observe national regulations.
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Page 197 of 284
191
Self-help, vehicle care
Picture no: 18191s.tif
Lift the safety catch upwards and open the
bonnet.
Any dirt or snow on the bonnet can slide
down toward the windscreen when the
bonnet is opened and block the air intake
3135.
Picture no: 18413s.tif
Secure the bonnet support. Before closing
the bonnet, press the support into the
holder.
Lower the bonnet and allow it to drop into
the catch. Check that the bonnet is
engaged.
Starting the engine with jump
leads
3
Do not use a rapid charger or push or two
the vehicle to get it started.
A vehicle with a discha rged battery can be
started using jump leads and the battery of
another vehicle.
9
Warning
Starting the engine with jump leads must
be carried out with the utmost caution.
Any deviation from the following instruc-
tion may lead to injury or damage due
to the explosion of the batteries and to
damage of the electrics in both vehicles.
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Page 198 of 284

192 Self-help, vehicle care
Picture no: 17229t.tif
zNever expose the battery to naked
flames or sparks.
z A flat battery can fr eeze at temperatures
around 0 C. Defrost the battery before
connecting up jump leads.
z Do not allow battery fluid to come into
contact with eyes, skin, fabrics or
painted surfaces. The fluid contains
sulphuric acid which can cause injuries
and damage in the event of direct
contact.
z Wear eye protection and protective
clothing when handling a battery. z
Use a booster battery with the same
voltage (12 volts). Its capacity (Ah) must
not be much less than that of the
discharged battery.
z Use jump leads with insulated terminals
and a cross section of at least 16 mm
2
(25 mm
2 for diesel engines).
z Do not disconnect the discharged
battery from the vehicle.
z Switch off all unnecessary electrical
consumers.
z Do not lean over the battery during jump
starting.
z Do not allow the terminals of one lead to
touch those of the other lead.
z The vehicles must not come into contact
with each other during the jump starting
process.
z Apply hand brake. Manual transmission
or manual transmission automated 3 in
neutral, automati c transmission 3 in P.
Picture no: 18270s.tif
Lead connection order:
1. Connect the red lead to the positive
terminal 1 of the booster battery.
2. Connect the other end of the red cable to the positive terminal 2 on the flat
battery. The positive terminal has a
cover cap on it Undo the cap to access
the positive terminal.
3. Connect the black lead to the negative terminal 3 of the booster battery.
4. Connect the other end of the black lead 4
to a vehicle grounding point, such as the
engine block or a screw connection in the
engine suspension. Co nnect as far away
from the discharged battery as possible.
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Page 200 of 284
194 Self-help, vehicle care
Picture no: 18586s.tif
The towing eye is located in a recess.
Picture no: 18142s.tif
Screw in the towing eye anticlockwise as far
as it will go until it stops in a horizontal
position.
Attach a tow rope 3 – or better still a tow
rod 3 – to the eye.
The towing eye may only be used for
towing and not for recovery of the vehicle.
Switch on ignition to release steering
column lock and to permit operation of
brake lamps, horn an d windscreen wipers. Manual transmission or manual
transmission automated
3 in neutral,
automatic transmission 3 in N.
When the engine is not running,
considerably more force is needed to brake
and steer.
To prevent the entry of exhaust fumes from
the towing vehicle, switch on the air
recirculation 3 and close the windows.
Contact a workshop for assistance.
Caution
Drive slowly. Do not drive jerkily. Exces-
sive tractive force can damage the
vehicle.
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Page 201 of 284

195
Self-help, vehicle care
Vehicles with automatic transmission 3
should be towed facing forward only and
must not be towed faster than 80 km/h or
further than 100 km. If the transmission is
defective, or if the above speed or distance
is to be exceeded, the front axle must be
raised off the ground.
Contact a workshop for assistance.
If the automatic clutch has been manually
disengaged in vehicles with manual
automated transmission 3 towing is not
permitted 3143. In this case, contact a
workshop for assistance immediately.
After towing, unscrew towing eye by
rotating clockwise and insert and close the
cap.
Picture no: 18143s.tif
Towing another vehicle
Disengage cap at bottom and remove
downwards.
The towing eye is in the luggage
compartment, on the right beneath the
cover 3198.
Picture no: 18144s.tif
Screw in the towing eye anticlockwise as far
as it will go until it stops in a horizontal
position.
Attach a tow rope 3 – or better still a tow
rod 3 – to the eye.
The towing eye may only be used for
towing and not for recovery of the vehicle.
After towing, unscrew the towing eye
clockwise and refit the cover.
Caution
Drive slowly. Do not drive jerkily. Exces-
sive tractive force can damage the
vehicle.
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Page 206 of 284

200 Self-help, vehicle careChanging wheels There may be a tyre repair kit instead of a
spare wheel 3204.
Make the following preparations and
observe the following information:
z Park the vehicle on a level, firm and non-
skid surface. The front wheels must be in
the straight-ahead position.
z Switch on hazard warning lights, apply
hand brake, automa tic transmission 3 -
selector lever in P , manual transmission
or manual automatic transmission 3 -
engage 1st or reverse gear.
z Erect warning triangle 3 as specified.
Warning triangle 3196.
z Remove spare wheel from luggage
compartment 3196. z
Never change more than one wheel at
once.
z Use the jack 3 only to change wheels.
z If the ground on which the vehicle is
standing is soft, a solid board (max. 1 cm
thick) should be placed under the jack 3.
z Block the wheel diagonally opposite the
wheel to be changed by placing wedge
blocks or equivalent in front and behind
the wheel. z
No people or animals may be in the
vehicle when it is jacked up.
z Never crawl under a jacked-up vehicle.
z Do not start the vehicle when it is raised
on the jack.
z Before screwing in the wheel bolts, clean
them and lightly coat the taper of each
wheel bolt with comm ercially available
grease.
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