Driving Tips
Intelligent technology Electronic stability programme (ESP)
General Fig. 137 ESP system: Switch for TCS
The ESP aids you in maintaining control of your vehicle in situations in which the
vehicle is driving at its dynamic limits, such as entering a curve fast. The risk of
skidding is reduced and your car thus offers greater driving stability depending on
the conditions of the road surface. The system operates at all speeds.
The following systems are integrated into the electronic stability programme:
● Electronic Differential Lock (EDL),
● Traction control system (TCS),
● active driver-steering recommendation (DSR),
● Antilock brake system (ABS),
● Brake Assist,
● Uphill Start Assist.
The ESP system cannot be switched off with the
⇒ fig. 137 button; only the TCS
system is switched off, the warning light in the instrument cluster lights up. Operating principle
The ESP switches on automatically when the engine is started and then conducts
a self-test. The ESP control unit processes data from the individual systems. It al-
so processes additional measurement data which are supplied by highly sensitive
sensors: the rotational velocity of the vehicle about its vertical axis, the lateral ac-
celeration of the vehicle, the braking pressure and the steering angle.
The direction which the driver wishes to take is determined based on the steering
angle and the speed of the vehicle and is constantly compared with the actual be-
haviour of the vehicle. If differences exist, such as the car beginning to skid, the
ESP will automatically brake the appropriate wheel.
The car is stabilised again by the forces which take effect when the wheel is
braked. Intervention into the brake system takes place primarily on the outer front
wheel of a vehicle which tends to oversteer (tendency for the rear of the vehicle
to break away) while occurs this is on the inner rear wheel of a vehicle which
tends to understeer (tendency to shift out of the curve). This braking control cycle
is accompanied by noises.
During an intervention of the system, the warning light flashes in the instru-
ment cluster ⇒
page 27.
The ESP operates in combination with the ABS ⇒ page 157, Antilock brake system
(ABS). If there is a fault in the ABS system, the ESP also does not operate.
The ESP warning light lights up in the instrument cluster when there is a fault on
the ESP ⇒ page 27. WARNING
It is also not possible for the ESP to overcome the physical limits of the vehi-
cle. Even if a vehicle fitted with ESP you should still always adapt your style of
driving to the condition of the road surface and the traffic situation. This par-
ticularly applies when driving on slippery and wet roads. The increased safety
offered must not tempt you to take greater risks than otherwise - risk of an
accident! £ 153
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Note
● All four wheels must be fitted with the same tyres in order to achieve prob-
lem-free operation of the ESP. Differing rolling circumferences of the tyres can
lead to an undesirable reduction in the engine output.
● Changes to vehicle (e.g. on engine, on the brakes, on chassis or another combi-
nation of tyres and wheels) can influence the function of the ESP ⇒
page 207,
Accessories, changes and replacement of parts.
Electronic Differential Lock (EDL) The electronic differential lock prevents an individual wheel from
slipping.
General
The EDL makes it much easier, and sometimes at all possible, to start off, acceler-
ate and climb a steep hill when the conditions of the road surface are unfavoura-
ble.
Operating principle
The EDL is activated automatically, that is without any action on the part of the
driver. It monitors the speeds of the driven wheels with the aid of the ABS sen-
sors. Should only
one drive wheel begin spinning on a slippery surface there will
be an appreciable difference in the speed of the driven wheels. The EDL function
brakes the slipping wheel and the differential transmits a greater driving force to
the other driven wheel. This control process is also accompanied by noises.
Overheating of the brakes
The EDL switches off automatically if unusually severe stresses exist in order to
avoid excessive heat generation in the disc brake on the wheel which is being
braked. The vehicle can continue to be driven and has the same characteristics as
a vehicle not fitted with EDL.
The EDL switches on again automatically as soon as the brake has cooled down.
EDL Off-road
After switching on the Off-road mode ⇒ page 160
, EDL Off-road is activated.
EDS Offroad assists vehicle traction when driving on unfirm ground.
EDL is activated earlier in the Off-road mode than in the normal mode. The brake
pressure builts up more quickly on the slipping wheel, on one axle, as well as diag-
onally. WARNING
● Carefully depress the accelerator when accelerating on uniformly slippery
road surfaces, such as ice and snow. The driven wheels might still spin despite
the EDL and affect the stability of the vehicle - risk of an accident!
● You should always adapt your style of driving to the condition of road sur-
face and to the traffic situation even when your vehicle is fitted with EDL. The
increased safety offered must not tempt you to take greater risks than other-
wise - risk of an accident! Note
● If the ABS or ESP warning light comes on, this may also indicate a fault in the
EDL. Have the vehicle inspected by your specialist garage as soon as you can.
● Changes to vehicle (e.g. on engine, on the brakes, on chassis or another combi-
nation of tyres and wheels) can influence the function of the EDL ⇒
page 207,
Accessories, changes and replacement of parts.
Traction control system (TCS) The traction control system prevents the driven wheels from spin-
ning when accelerating.
Fig. 138 TCS switch
General
The TCS makes it much easier, and sometimes at all possible, to start off, acceler-
ate and climb a steep hill when the conditions of the road surface are unfavoura-
ble. £154
Intelligent technology
Operating principle
The TCS switches on automatically when the engine is started and then conducts
a self-test. The system monitors the speeds of the driven wheels with the aid of
the ABS sensors. If the wheels are spinning, the force transmitted to the road sur-
face is automatically adapted by reducing the engine speed. The system operates
at all speeds.
The TCS operates in combination with the ABS ⇒ page 157,
Antilock brake system
(ABS). The TCS will not function if a fault exists in the ABS system.
The TCS warning light lights up in the instrument cluster when there is a fault on
the TCS ⇒ page 27.
During an intervention of the system, the TCS warning light flashes in the in-
strument cluster ⇒ page 27.
Switching off
You can also switch off the TCS system by pressing the ⇒ fig. 138 button, or, in ve-
hicles with ESP, by pressing the ⇒ fig. 137 button. The TCS warning light lights up
in the instrument cluster when the TCS is switched off .
The TCS should normally always be switched on. It may be good practice in certain
exceptional cases, such as when you wish to have wheel slip, to switch off the
system.
Examples:
● when driving with snow chains,
● when driving in deep snow or on a loose surface,
● when it is necessary to rock a car free when it has become stuck.
then you should switch on the TCS again.
TCS Off-road
After switching on the Off-road mode ⇒ page 160
, TCS Off-road is activated.
TCS Off-road provides a more effective acceleration of the vehicle on an unfirm
ground, as it allows higher traction between the slipping wheels and the ground.
The system operates when starting off or at low speeds. WARNING
You should always adjust your style of driving to the conditions of the road
surface and the traffic situation. The increased safety offered must not tempt
you to take greater risks than otherwise - risk of an accident! Note
● All four wheels must be fitted with the same tyres in order to achieve prob-
lem-free operation of the TCS. Differing rolling circumferences of the tyres can
lead to an undesirable reduction in the engine output.
● Changes to vehicle (e.g. on engine, on the brakes, on chassis or another combi-
nation of tyres and wheels) can influence the function of the TCS ⇒
page 207, Ac-
cessories, changes and replacement of parts.
Active driver-steering recommendation (DSR) This function indicates to the driver in critical situations a steering recommenda-
tion in order to stabilise the vehicle. The active driver-steering recommendation is
activated, for example, on the right and left vehicle side when braking sharply on
different road surfaces. WARNING
Even with this function the vehicle cannot steer itself! The driver is further-
more responsible for the steering of the vehicle!
Brakes What has a negative effect on braking efficiency?
Wear-and-tear
Wear-and-tear to the brake pads is greatly dependent on the operating conditions
of the vehicle and your style of driving. Particularly if you drive a great deal in
towns and over short distances or if you adopt a sporty style of driving, it may be
necessary to have the thickness of the brake pads inspected at a specialist garage
between the service inspections.
Wet roads or road salt
There may be a certain delay before the brakes take full effect under certain con-
ditions such as when driving through water, during heavy rain showers or after
the vehicle has been washed in an automatic vehicle wash, since the brake discs
and brake pads may be moist or even have a coating of ice on them in winter. You
should dry the brakes as soon as possible by applying and releasing the brakes
several times. £ 155
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The Brake Assist is able to help you achieve a shorter braking distance in emer-
gency situations by rapidly producing the pressure required in the brake system. It
fully exploits the attributes of the ABS. After you release the brake pedal, the
function of the Brake Assist is automatically switched off and the brakes operate
in the normal way.
The Brake Assist is part of the ESP system. If a fault occurs in the ESP, the Brake
Assist function is also not available. Further information on the ESP
⇒ page 153.WARNING
● The Brake Assist is also not able to overcome the physical limits of your car
in terms of the braking distance required.
● Adapt your speed to the conditions of the road surface and to the traffic
situation.
● The increased safety offered by the Brake Assist must not tempt you to
take a greater safety risk than otherwise.
Uphill Start Assist The uphill start assist makes it easier to start off on steep hills. The system assists
a start off by holding the brake pressure produced by the brake pedal actuation
for approx. 2 seconds after releasing the brake pedal. The driver can therefore
move his foot from the brake pedal to the accelerator pedal and start off on the
slope, without having to actuate the handbrake. The brake pressure drops gradu-
ally the more you operate the accelerator pedal. If the vehicle does not start off
within 2 seconds, it starts to roll back.
The uphill start assist is active as of a 3 % slope, if the driver door is closed. It is
always active on slopes when in forward or reverse start off. When driving down-
hill, it is inactive.
Electromechanical power steering The power steering enables you to steer the vehicle with less physical force.
With the electromechanical power steering, the steering assist is automatically
adapted to the speed and to the steering angle.
It is still possible to fully steer the vehicle if the power steering fails or if the en-
gine is not running (vehicle being towed in). The only difference is that greater
physical effort is required. If there is a fault in the power steering, the warning light
or lights up in the
instrument cluster ⇒
page 25. WARNING
Contact your specialist garage if the power steering is defective.
Tyre pressure monitoring system Fig. 139 Button for setting the tyre in-
flation pressure control value
The tyre pressure monitoring system compares with the aid of the ABS sensors
the speed and also the rolling circumference of the individual wheels. If the rolling
circumference of a wheel is changed, the warning light
in the instrument clus-
ter ⇒ page 28 and an acoustic signal sounds.
The rolling circumference of the tyre can change if:
● the tyre inflation pressure is too low,
● the structure of the tyre is damaged,
● the vehicle is loaded on one side,
● the wheels of an axle are loaded heavily (e.g. when towing a trailer or when
driving uphill or downhill),
● snow chains are mounted,
● the temporary spare wheel is mounted,
● one wheel per axle was changed. £158
Intelligent technology
Basic setting of the system
After changing the tyre inflation pressures, after changing one or several wheels,
the position of a wheel on the vehicle (e.g. exchanging the wheels between the
axles) or when the warning light lights up while driving, a basic setting of the sys-
tem must be carried out as follows.
● Inflate all tyres to the specified inflation pressure ⇒ page 201.
● Switch on the ignition.
● Press button
⇒ fig. 139
for more than 2
seconds. While pressing the but-
ton, the warning light lights up. At the same time the memory of the system is
erased and the new calibration is started, which is confirmed with an audible sig-
nal and then the warning light goes out.
● If the warning light does not go out after the basic setting, there is a fault in
the system. Have the vehicle inspected by your nearest specialist garage.
Warning light lights up
If the tyre inflation pressure of at least one wheel is insufficiently inflated in com-
parison to the stored basic value, the warning light ⇒ lights up.
Warning light flashes
If the warning light flashes, there is a system fault. Have the vehicle inspected by
your nearest specialist garage. WARNING
● When the warning light lights up, immediately reduce the speed and
avoid sudden steering and brake manoeuvres. Please stop the vehicle without
delay at the nearest possible stop and inspect the tyres and their inflation
pressures.
● The driver is responsible for the correct tyre inflation pressures. For this
reason, the tyre inflation pressures must be checked regularly.
● Under certain circumstances (e.g. sporty style of driving, wintry or unpaved
roads) the warning light can be delayed or does not light up at all.
● The tyre pressure monitoring system does not take away the responsibility
from the driver for the correct tyre inflation pressure. Note
The tyre pressure monitoring system:
● does not replace the regular tyre inflation pressure control, because the sys-
tem cannot detect an even pressure loss; ●
cannot warn in case of very rapid tyre inflation pressure loss, e.g. in case of
sudden tyre damage. In this case carefully bring the vehicle to a standstill without
sudden steering movements and without sharp braking.
● In order to ensure a proper functioning of the tyre inflation pressure-control
system, it is necessary to carry out the basic setting again every 10 000 km or 1x a
year.
Diesel particle filter (diesel engine) In the diesel particle filter the resulting soot particles are collected
and burnt during the combustion of diesel fuel. Fig. 140 Vehicle data sticker
Code 7GG , 7MB or 7MG on the vehicle data sticker, see ⇒ fig. 140 , indicates that
your vehicle is equipped with a diesel particle filter. The vehicle data sticker is lo-
cated on the floor of the luggage compartment and is also stated in the Service
schedule.
The diesel particle filter filters the soot particles completely from the exhaust. The
soot is collected in the diesel particle filter and burnt regularly. To assist this pro-
cedure, we recommend not to drive regularly over short distances.
If the diesel particle filter is full or there is a fault, it is indicated by the warning
light . £ 159
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WARNING (Continued)
● If the wheels lose contact with the ground, for example when the vehicle
rebounds while driving over corrugations, steer straight ahead. If the wheels
are turned when making the contact with the ground again, the vehicle can
roll over.
● There should never be any person in front or behind the vehicle when
rocks, scrub, wood pieces or other objects are placed under the wheels in or-
der to achieve traction on a sandy or slippery ground. Turning the wheels can
transform these objects into dangerous
“bullets” – hazard!
Warning of a rollover Vehicles of this type have a higher centre of gravity than ordinary vehicles. This
increases the risk of vehicle rollover when driving on-road and off-road. Therefore,
you must always pay attention to the safety information which is stated in the
Owner's Manual.
WARNING
● In the event of a vehicle rollover, an occupant of the vehicle who is not
wearing a seat belt is exposed to a clearly higher risk of injury compared to an
occupant who is wearing a seat belt.
● Luggage and other items, which are transported on the roof of the vehicle,
additionally raise the centre of gravity and thus increase the risk of a rollover.
● Avoid driving at an angle on a hillside ⇒ page 174
.
● Observe the important guidelines ⇒ page 168.
Important information Off-road driving is not suitable for everyone. Small children, expectant mothers
and elderly or physically disabled persons are particularly at risk if the ride is rough
and help is far away.
The first priority should always be
safety.
Never overestimate your own capabilities and never underestimate the difficulties
of driving off-road.
We cannot discuss all the possible driving situations in this manual, because there
are so many types of terrains which may hide different risks and dangers. The ex-
amples listed in this manual are general rules for safe off-road driving. It is howev- er not possible to predict if these rules are valid for all the situations which may
occur. Before driving through unknown terrain, it is therefore important that you
know what lies ahead of you. This way you can estimate any possible danger in
advance. For the sake of the environment
When driving off-road, show respect and appreciation for the environment and its
preservation for future generations.
Before driving off-road for the first time Before driving off-road, we recommend that you take part in an Off-road driver
training course. This is especially important if you have little or no experience of
driving off-road. In a driver training course, you learn how to use the vehicle in
many different off-road situations and how to handle the vehicle safely when
driving through rough terrain.
Driving off-road requires entirely different skills from the driver and a very differ-
ent behaviour than driving on the road. Your personal safety and that of your pas-
sengers depend on you, your capabilities and your cautiousness.
Do not drive off-road where it is not suitable for your vehicle or where the de-
mands on you are too high. Although your vehicle can handle off-road driving, it is
not designed for travels with expedition characteristics.
Before each journey off-road, make sure that the vehicle is appropriately equip-
ped for the planned journey ⇒
page 170. The standard equipment of your vehicle
may not be sufficient for your journey. With the standard tyres you can drive with
your off-road vehicle through easy terrain, such as flat forest roads, meadows and
fields. Please note however, that driving the vehicle on a difficult, muddy and san-
dy ground is restricted and that the traction of the standard tyres is reduced when
driving off-road. If you have planned prolonged or difficult off-road trips, we rec-
ommend that you equip your vehicle with suitable off-road tyres. WARNING
Observe the important guidelines ⇒
page 168.
Rules of conduct for responsible off-road driving Observe the valid national legal requirements when driving off-road.
169
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Explanation of technical terms
Fig. 146 Embankment angle/slope angle
Fig. 147 Ground clearance/ramp angle
The technical data
⇒
page 230, Angle (in degree) refer to ideal conditions. These
values may differ depending on the load and composition of the soil and the envi-
ronment. The driver is responsible to decide whether a vehicle can overcome a
certain situation.
Embankment angle (front and rear) ATransition from the horizontal plane to an upward slope or from a downward
slope back to the plane. The angle indication determines the angle at which you
can drive the vehicle down the embankment, at a slow speed, without the bumper
or the underbody of the vehicle touching the ground. Slope angle
B The difference of altitude (upward slope) which is overcome on a stretch of road
of 100 m, is indicated in percentage or degrees, i.e the gradiant at which the vehi-
cle can climb a hill on its own (among other things, depending on the road surface
and the engine power).
Ground clearance
C The distance between the road surface and the deepest point of the vehicle un-
derbody.
Ramp angle D The angle indication determines the angle at which you can drive the vehicle over
a ramp, at a slow speed, without the underbody of the vehicle touching the ramp
edge.
WARNING
When exceeding the maximum value given in the table ⇒
page 230, Angle (in
degree), this can result in serious injuries and/or vehicle damage. All of the da-
ta was determined on flat, firm and non-slip road surfaces as well as under dry
weather conditions. There are no ideal off-road conditions. Therefore, never
completely go according to the maximum values, but always leave a safety
margin.
Useful utensils Many items can be very useful when driving off-road, for example:
● compass and maps,
● torch and spare batteries,
● mobile phone or CB radio,
● tow bar or tow rope with sufficient tear strength,
● electrically driven tyre pump for connecting to the 12-volt power outlet of the
vehicle,
● a blanket and rubber boots,
● snow chains,
● a timber plank which is approximately 4 cm thick and about 1 metre long can
be used as a traction aid when the vehicle is stuck or as a base for the lifting jack,
● additional tools and a folding yardstick or a measuring tape, £170
Driving and the environment
●
spare wheel and tyre repair kit,
● shovel.
Safe off-road driving Adopt a correct seated position and always fasten the seat belt correctly. Make
sure that your front passenger and your passengers seated on the rear seats al-
ways fasten their seat belts correctly.
When driving off-road, it is perhaps more useful to adopt a slightly different seat-
ed position. Depending on the terrain, an increased force may be required to turn
the steering wheel because the force is transferred from the front wheels to the
steering wheel. You must be seated in such a way that you have good front visibil-
ity, especially when driving uphill or downhill. You must never be seated in such a
way that the distance between your chest and the middle of the airbag cover is
less than 25 cm ⇒
page 139.
Under no circumstances must you drive off-road with high heels, slippery or open
shoes. You should wear shoes which fit your feet well and allow you to get a feel
for the pedals. WARNING
Observe the important guidelines ⇒
page 168.
Before driving off-road ●
Make sure the tyres are suitable for the planned off-road journey. Before you
drive through difficult terrain, equip your vehicle with off-road tyres.
● Fill up your tank. The fuel consumption of the vehicle is much higher when
driving off-road than when driving on the road.
● Install the towing eye at the front or at the rear before driving off-road. It is
not always possible to install the towing eye if the vehicle got stuck.
● Always check the inflation pressure of all the tyres and if necessary correct it.
● Check the vehicle tool kit and supplement it according to your needs.
● Fill with engine oil up to the line A , so that the engine is sufficiently supplied
with engine oil when the vehicle is in a tilted position ⇒
page 191, Check engine
oil level.
● Top up wash fluid.
● Stow your load as low as possible in the vehicle and attach all the items which
are loose. Off-road driving ●
Never be alone when driving off-road and be prepared to encounter unexpec-
ted situations. Travel together with at least two off-road vehicles. Equipment with
which you can call for help in an emergency is particularly useful.
● Drive slowly through unclear terrain.
● You must stop when encountering difficult passages and explore the continu-
ation of the route on foot. If you cannot go on or if you doubt the safety of the
route, turn back and choose another way.
● Drive slowly over hilltops. Make sure that the wheels of the vehicle do not lift
off the ground, as this could severely damage the vehicle and it may become disa-
bled.
● Drive slowly on difficult stretches of the route. When driving on a slippery
ground, shift up into the next higher gear and make sure that the vehicle always
stays in motion. Do not drive too fast so that you don't lose control over your vehi-
cle.
● If your vehicle got stuck in sand, snow or sludge, it may be more effective to
reverse the vehicle than trying to drive forwards.
● Place stones, footmats or pieces of wood under the spinning wheels in order
to achieve traction on a sandy or slippery ground.
● Do no drive through water before reading what you must take into account
⇒ page 167.
● Keep sufficient distance from other vehicles even at low speeds. When the
first vehicle suddenly gets stuck, the following vehicle can still stop in time with-
out getting stuck itself.
● Do not plan day trips which are too far in distance.
● Do not use the cruise control system when driving off-road. It is only intended
for driving on the road. WARNING
● The intelligent engineering of your vehicle cannot overcome the physical
limits of your vehicle.
● Be very alert and look ahead when driving off-road. Excessive speed or in-
correct driving manoeuvres can cause damage to the vehicle and lead to seri-
ous injuries.
● Observe the important guidelines ⇒ page 168. £ 171
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