Page 174 of 249

172Driving and operating
The permitted trailer loads apply up tothe specified incline and up to an
altitude of 1000 metres above sea
level. Since engine power decreases
as altitude increases due to the air
becoming thinner, therefore reducing
climbing ability, the permissible gross
train weight also decreases by 10 % for every 1000 metres of additional
altitude. The gross train weight does
not have to be reduced when driving on roads with slight inclines (less than
8 %, e.g. motorways).
The permissible gross train weight
must not be exceeded. This weight is specified on the identification plate3 226.
Vertical coupling load
The vertical coupling load is the load
exerted by the trailer on the coupling
ball. It can be varied by changing the
weight distribution when loading the
trailer.
The maximum permissible vertical
coupling load (55 kg) is specified on
the towing equipment identification
plate and in the vehicle documents.
Always aim for the maximum load,especially in the case of heavy
trailers. The vertical coupling load
should never fall below 25 kg.
Rear axle load When the trailer is coupled and the
towing vehicle fully loaded, the
permissible rear axle load (see
identification plate or vehicle
documents) for passenger vehicles
may be exceeded by 70 kg for the 5-
door vehicle and 60 kg for the 3-door vehicle, the gross vehicle weight
rating by 55 kg.
If the permitted rear axle load is
exceeded a maximum speed of
60 mph applies. If lower national
maximum speeds are specified for
trailer operation, they must be
complied with.
Towing equipmentCaution
When operating without a trailer,
remove the coupling ball bar.
Stowage of coupling ball bar
The coupling ball bar is stowed in a
bag in the spare wheel well and
secured to the lashing eyes in the
load compartment.
When inserting, fit protective cap over
rotary knob with key.
Page 175 of 249
Driving and operating173
Fitting the coupling ball bar
Disengage and fold down the socket.Remove the sealing plug from the
opening for the coupling ball bar and
stow it.
Checking the tensioning of the
coupling ball bar
■ The rotary knob rests on the
coupling ball bar.
■ Green marking on the rotary knob is not visible.
■ Locking pin at the top of the coupling ball bar is set inwards.
■ The key is in the lock.
Otherwise, the coupling ball bar must be tensioned before it is inserted into
the coupling housing:
■ Place the key in the lock and unlock
the coupling ball bar.
■ Push the rotary knob onto the coupling ball bar and rotate right
while pressed down until it
engages. The key remains in the
lock.
Page 176 of 249
174Driving and operating
Inserting the coupling ball bar
Insert the tensioned coupling ball bar
in the opening and push firmly
upwards until it audibly engages.
The rotary knob snaps back into its
original position resting against the
coupling ball bar without a gap.
9 Warning
Do not touch rotary knob during
insertion.
Green marking on the rotary knob is
visible.
Lock coupling ball bar and remove key.
Eye for break-away stopping cable
Attach breakaway stopping cable to
eye.
Check that the coupling ball bar is correctly installed
■ Green marking on rotary knob is visible.
■ There must be no gap between the
rotary knob and the coupling ball
bar.
■ The coupling ball bar must be firmly
engaged in the opening.
■ The coupling ball bar must be locked and the key removed.
Page 177 of 249
Driving and operating1759Warning
Towing a trailer is permitted only
when a coupling ball bar is fitted correctly. If the coupling ball bardoes not engage correctly, seekthe assistance of a workshop.
Dismounting the coupling ball
bar
Insert the key in the lock and unlock
the coupling ball bar.
Push the rotary knob 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. Fold away socket.
Trailer stability assist If the system detects snaking
movements, engine power is reduced
and the vehicle/trailer combination is selectively braked until the snaking
ceases. While system is working keep
steering wheel as still as possible.
Trailer stability assist (TSA) is a
function of the Electronic Stability
Control 3 145.
Page 214 of 249

212Vehicle care
■ Never crawl under a jacked-upvehicle.
■ Do not start the vehicle when it is raised on the jack.
■ Before screwing in the wheel bolts,
clean them and lightly coat thetaper of each wheel bolt with
commercially available grease.9 Warning
Do not grease the thread of the
wheel bolt.
1. Steel wheels:
Pull off the wheel cover with the
hook. Vehicle tools 3 198.
Alloy wheels with bolt caps: Disengage wheel bolt caps with a
screwdriver and remove. To
protect the wheel, place a soft
cloth between the screwdriver
and the alloy wheel.
Alloy wheels with center cap:
Insert extractor in the open slot of
the center cap and substract the
cap from the wheel. Vehicle tools 3 198.
2. Install the wheel wrench ensuring
that it locates securely and loosen
each wheel bolt by half a turn.
The wheels might be protected by locking wheel bolts. To loosen
these specific bolts first attach the
key adapter onto the head of the
bolt before installing the wheel
wrench. The key adapter is
located in the glovebox.
Page 215 of 249

Vehicle care213
3. Ensure the jack is correctlypositioned under the relevant
vehicle jacking point.
4. Set the jack to the necessary height. Position it directly below
the jacking point in a manner that
prevents it from slipping.
Attach jack handle and with the
jack correctly aligned rotate handle until wheel is clear of theground.
5. Unscrew the wheel bolts.
6. Change the wheel. Spare wheel 3 214.
7. Screw on the wheel bolts.
8. Lower vehicle.
9. Install the wheel wrench ensuring that it locates securely and tighten
each bolt in a crosswise
sequence. Tightening torque is
110 Nm.
10. Align the valve hole in the wheel cover of the steel wheel with the
tyre valve before installing.
Install wheel bolt caps or center
cap on alloy wheel.
11. Install vehicle jacking point cover.
12. Stow the replaced wheel 3 214,
the vehicle tools 3 198 and the
key adapter 3 56.
13. Check the tyre pressure of the installed tyre and the wheel bolttorque as soon as possible.
Have the defective tyre renewed or
repaired as soon as possible.
Page 229 of 249
Technical data227Vehicle dataRecommended fluids and lubricantsEuropean service scheduleRequired engine oil qualityAll European countries
(except Belarus, Moldova, Russia, Turkey)
Only Israel
Engine oil qualityPetrol engines
(including CNG, LPG, E85)Diesel enginesPetrol engines
(including CNG, LPG, E85)Diesel enginesdexos 1––✔–dexos 2✔✔–✔
In case dexos quality is unavailable you may use max. 1 litre engine oil quality ACEA C3 once between each oil change.
Engine oil viscosity grades
All European countries and Israel (except Belarus, Moldova, Russia, Turkey)Ambient temperaturePetrol and diesel enginesdown to -25 °CSAE 5W-30 or SAE 5W-40below -25 °CSAE 0W-30 or SAE 0W-40
Page 230 of 249
228Technical data
International service scheduleRequired engine oil qualityAll countries outside Europe except Israel
Only Belarus, Moldova, Russia, Turkey
Engine oil qualityPetrol engines
(including CNG, LPG, E85)Diesel enginesPetrol engines
(including CNG, LPG, E85)Diesel enginesdexos 1✔–––dexos 2–✔✔✔
In case dexos quality is unavailable you may use the oil qualities listed below:
All countries outside Europe except Israel
Only Belarus, Moldova, Russia, Turkey
Engine oil qualityPetrol engines
(including CNG, LPG, E85)Diesel enginesPetrol engines
(including CNG, LPG, E85)Diesel enginesGM-LL-A-025✔–✔–GM-LL-B-025–✔–✔