
Driving
164
– In vehicles with a ma nu al gea rb ox, de press the clu tch pe dal fully and hold it in this position, the starter will then only have to turn
the engine.
– Turn the ignition key to position ⇒page 161, fig. 126 . The
warning lamp
lights up to show that the glow plugs are
preheating the engine.
– When the warning lamp goes out, turn the key to position to start the engine. Do not press the accelerator.
– Let go of the ignition key as soon as the engine starts, the starter motor must not be allowed to run on with the engine.
When starting from cold, the engine may be a little noisy for the first few
seconds until oil pressure has built up in the hydraulic valve lifters. This is
quite normal, and no cause for concern.
If you have problems starting the engine, please refer to Help with Ignition.
Glow plug system
To avoid unnecessary loads on the battery, do not use any other major elec-
trical equipment while the glow plugs are preheating.
Start the engine as soon as the glow plug warning lamp goes out.
Starting a diesel engine after the fuel tank has been completely run dry
If the fuel tank has been completely run dry, it may take longer than normal
(up to one minute) to start a diesel engine after refuelling. This is because air
needs to be bled from the fuel system while starting.
WARNING
•
Never start or run the engine in un ventilated or closed rooms. The
exhaust fumes contain carbon mono xide, an odourless and colourless poisonous gas. Risk of fatal accidents. Carbon monoxide can cause people
to lose consciousness. It can also cause death.
•
Never leave the vehicle unattended if the engine is running.
•
Never use “cold start sprays”, they could explode or cause the engine
to run at high revs. Risk of injury.Caution
•
When the engine is cold, you should av oid high engine speeds, driving at
full throttle and over-loading the engine. Risk of engine damage.
•
The vehicle should not be pushed or towed for more than approximately
50 metres to start the engine. Fuel c ould enter the catalytic converter and
damage it.
•
Before attempting to push -start or tow a vehicle to start it, you should first
try to start it using the battery of another vehicle. Observe the warnings in the
chapter Help with Ignition.For the sake of the environment
Do not warm up the engine by running it with the car stationary. You should
drive off as soon as you start the engine. This helps the engine reach oper-
ating temperature faster and reduces emissions.Switching off the engine– Stopping the engine.
– Turn the ignition key to position ⇒page 161, fig. 126 .
A2A3
WARNING (continued)
A1
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Driving
166•
The reversing lights come on
•
The heating or air condit ioning automatically change to air recirculation
mode.
•
The rear window heater switches on when the windscreen wiper is acti-
vated.
WARNING
•
When the engine is running, the vehicle will start to move as soon as a
gear is engaged and the clutch released.
•
Never select the reverse gear when the vehicle is in motion. Risk of acci-
dent.Caution
•
Do not rest your hand on the gear lever when driving. The pressure of your
hand could cause premature wear on the selector forks in the gearbox.
•
When changing gear, you should always depress the clutch fully to avoid
unnecessary wear and damage.
•
Do not hold the car “on the clutch” on hills. This causes premature wear
and damages the clutch. It can also prevent power being transferred from the
engine to the gearbox.
Automatic gearboxGearbox programs
The automatic gearbox has two gearbox programmes.The gearbox management system is equipped with two driving programmes.
Depending on the driver or the driv ing situation, either a consumption
oriented programme or a more “sporty” programme will be selected.
The programme selection will be carried out automatically depending on how
the accelerator is used.•
The consumption-oriented programme will be selected if you use the
accelerator slowly or normally. This means that the gearbox will shift up
earlier and down later.
•
A more “sporty” driving programme wh ich shifts up gear later will be
selected if you use the accelerator more quickly.
Fig. 128 Section of
centre console: selector
lever with lock button
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Driving
168
– Press and hold the lock button, move the selector lever to P and
release the lock button.
Driving up and down hills
– Press the selector lever from position D to the right into the
“Tiptronic” selector gate.
– Lightly press the selector lever back to change down.
Holding the car on a hill
– You should always hold the vehicle in position with the footbrake
to stop it from “rolling backwards” ⇒. Do not try to prevent
the vehicle from “rolling backwards” by increasing the engine
speed while a range of gears is selected
Moving away on an incline
– With a gear engaged, take your foot from the brake and depress the accelerator.The steeper the gradient, the lower the gear you will need. This increases the
braking effect of the engine. For example, you should drive down a very steep
slope in 3rd gear. If the engine brake effect is not sufficient, the vehicle will
gain speed. The automatic gearbox / direct shift gearbox automatically
changes up to prevent the engine over revving. Use the foot brake to reduce
speed and change into 3rd gear using “Tiptronic” ⇒.
Your vehicle has an automatic interlock which prevents the selector lever
being put into a position for driving forwards or in reverse from positions P or
N if the brake pedal is not depressed.
The ignition key cannot be removed unl ess the selector lever is in position P.
WARNING
•
As a driver you should never leave your vehicle if the engine is running
and a gear is engaged. If you have to leave your vehicle while the engine is
running, you must apply the parking brake and engage parking lock P.
•
If the engine is running and if D, S or R is engaged, you will need to hold
the car on the foot brake. The car will creep forward as the power transmis-
sion is not fully interrupted even when the engine is idling.
•
Never press the accelerator when you move the selector lever. Risk of
accident.
•
Never move the selector lever to R or P when driving. Risk of accident!
•
Before you drive down a steep gradient, reduce your speed and use
“Tiptronic” to select a low gear.
•
If you have to stop the vehicle on a gradient, always hold the vehicle in
position using the foot brake to stop it from rolling back.
•
Never allow the brake to rub and do not use the brake pedal too often
or for long periods. Constant braking will cause the brakes to overheat and
will considerably reduce the brake effect. This increases the braking
distance and could cause the brake system to fail.
•
Never allow the car to roll down a gradient with the gear in neutral N, or
in selector lever position D, even if the engine is not running.Caution
•
If you stop the vehicle on a gradient, do not attempt to stop it from rolling
by depressing the accelerator when a gear has been selected. Otherwise, the
automatic gearbox /direct shift gearbox* may overheat causing damage. Pull
the handbrake on fully or depress the brake pedal to prevent the vehicle from
rolling away.
•
If you allow the car to roll with the selector lever in position N with the
engine switched off, the automatic gearbox / direct shift gearbox* will be
damaged as it will not be lubricated.
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Driving171
Safety First
Operating instructions
Tips and Maintenance
Te c h n i c a l D a t a
Changing gear with “Tiptronic”
The “Tiptronic” system allows the driver to change gears
manually.
Changing gear with “Tiptronic” (selector lever)
– Press the selector lever from position D to the right into the
“Tiptronic” selector gate ⇒fig. 130 .
– Lightly press the selector to the front + to change up.
– Lightly press the selector lever back - to change down.When accelerating, the automatic gearbox automatically shifts up to the next
gear shortly before the maximum permitted engine speed is reached.
If a lower gear is selected, the automatic gearbox does not change down until
the point is reached where the engine could no longer over rev.
Gear selection display for Tiptronic
If the automatic gearbox is shifted manually or using “Tiptronic”, the indi-
vidual gears are shown on the display ⇒fig. 131 .Kick-down function
The kick-down feature is designed to give maximum acceler-
ation.If you press the accelerator right down, the gearbox automatically changes
down a gear, depending on speed and engine speed, to give the vehicle full
acceleration.
The gearbox does not shift up to the next gear until the engine reaches the
maximum determined engine speed for the gear.
WARNING
You could lose control of the vehicle if you accelerate quickly on slippery
surfaces. This may result in serious injury.
Fig. 130 Section of
centre console: selector
lever with lock buttonFig. 131 Section of the
instrument panel : display
showing position of
selector lever
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Driving
172•
Be particularly careful, therefore, when using the kick-down function on
slippery road surfaces.
•
You should use the kick-down func tion only when traffic and weather
conditions allow it to be used safely.
HandbrakeUsing the handbrake
The handbrake should be applied firmly to prevent the
vehicle from accidentally rolling away.Always apply the handbrake when you leave your vehicle and when
you park.
Using the handbrake
– Firmly pull the handbrake lever up all the way.
Releasing the handbrake
– Firmly pull the handbrake lever up all the way.
– Push in the lock button on the handbrake lever.
– Keep the locking knob pressed and push the lever all the way down ⇒ .The handbrake is located at the side of the driver seat. Always apply the
handbrake firmly. This prevents you driving with the handbrake applied
⇒ . The handbrake warning lamp
lights up when the handbrake is applied
and the ignition switched on. The warning lamp goes out when the hand-
brake is released.
WARNING
•
Never use the handbrake to slow down the vehicle when it is in motion.
The braking distance is considerably longer, as braking is only applied to
the rear wheels. Risk of accident!
•
Never drive with the handbrake slightly applied. This could cause the
rear brakes to overheat and lose thei r braking efficiency. Risk of accident.
This also causes premature wear on the rear brake pads/linings.Caution
Always apply the handbrake before you leave the vehicle. On cars with a
manual gearbox engage 1st gear, or on an automatic move the selector lever
to P .Parking
The handbrake should always be firmly applied when the
vehicle is parked.Always note the following points when parking the vehicle:
– Use the foot brake to stop the vehicle.
–Apply the handbrake firmly.
– On a manual gearbox engage 1st gear. On an automatic move
the selector lever to P.
WARNING (continued)
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Driving173
Safety First
Operating instructions
Tips and Maintenance
Te c h n i c a l D a t a
– Switch off the engine and remove the key from the ignition lock.
Turn the steering wheel slightly to engage the steering lock.
– Always take you car keys with you when you leave the vehicle ⇒ .Additional notes on parking the vehicle on gradients:
Turn the steering wheel so that the vehicle would roll against the kerb if it did
start to roll.•
If the vehicle is facing downhill, turn the front wheels so that they point
towards the kerb.
•
If the vehicle is facing uphill , turn the front wheels so that they point away
from the kerb .
WARNING
Take measures to reduce the risk of injury when you leave your vehicle
unattended.•
Never park where the hot exhaust system could ignite inflammable
materials, such as dry grass, low bushes, spilt fuel etc.
•
Never allow vehicle occupants to re main in the vehicle when it is
locked. They would be unable to open the vehicle from the inside, and
could become trapped in the vehicle in an emergency. In the event of an
emergency, locked doors will delay assistance to occupants.
•
Never leave children unsupervised in the vehicle. They could set the
vehicle in motion, for example, by releasing the handbrake or the gear
lever / selector lever.
•
Depending on weather conditions, it may become extremely hot or cold
inside the vehicle. This can be fatal.
Parking distance warning systemDescription
The parking distance warning system is a parking aid which
draws your attention to obstacles in front or behind the
vehicle.The parking distance warning system as sists the driver when parking. If the
rear of the vehicle is approaching an obstacle, an intermittent sound signal is
emitted. The shorter the distance, the shorter the intervals between tones. If
the vehicle is too close to the obstacle, the sound signal becomes constant.
The distance to an obstacle at the front is indicated via a high tone and via a
low tone at the rear. The shorter the distance, the shorter the intervals
between tones. If the vehicle is too close to the obstacle, the sound signal
becomes constant.
The obstacle may no longer be detected if the vehicle gets even closer to it!
The warning signal will stop when•
the vehicle moves away from the obstacle
•
the outer sensors measure a constant distance for approximately 3
seconds.
The signal will not be switched off once the vehicle has reached the perma-
nent tone area.
Registering the obstacle
•
Outer sensors front and rear: as of approx. 80 cm
•
Centre sensors at the front: as of approx. 120 cm
•
Centre sensors at the rear: as of approx. 160 cm
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Intelligent technology179
Safety First
Operating instructions
Tips and Maintenance
Te c h n i c a l D a t a
Tips and MaintenanceIntelligent technologyBrakesBrake servoThe brake servo supplements the pressure you exert on the brake pedal. It
works only when the engine is running .
If the brake servo does not operate, for example, when the vehicle is being
towed or due to a fault in the system, the brake pedal must be depressed
harder.
WARNING
The braking distance can also be affected by external factors.•
Never let the vehicle coast with the engine switched off. Failure to do so
could result in an accident. The braking distance is increased considerably
as the brake servo does not function.
•
If the brake servo is out of action, for example if the car is being towed,
you will have to press the brake pedal considerably harder than normal.
Brake pads wear display
If this light comes on, check the brake pads immediately.
At the same time, a text message or the necessary operations may appear on
the instrument panel.
WARNING
If the warning lamp lights up
or the corresponding message appears on
the instrument panel, immediately have the brake pads checked and
replaced, if necessary, at a specialised workshop.
Brake warning lamp
If the warning lamp comes on, this may be caused by the
following reasons:•
With the handbrake on the warning light comes on
on the instrument
panel. If you are travelling at over 6 km/h with the hand brake on, a text
message or the required operations ma y appear on the instrument panel. In
addition a warning signal is heard.
•
In the event of insufficient brake fluid the warning lamp lights up
on
the instrument panel. At the same time, a text message or the necessary oper-
ations may appear on the instrument panel. Stop the vehicle immediately
and check the level of the brake fluid ⇒page 221.
•
In the event of a fault in the brake system the warning lamp lights up
on the instrument panel and three buzz es are emitted. At the same time, a
text message or the necessary operations may appear on the instrument
panel. Stop the vehicle and do not dr ive on. You should obtain professional
assistance. This warning lamp
can light up together with the anti-locking
brake system warning lamp
⇒ .
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Intelligent technology
180
WARNING
Special care must be taken when working on the engine or on components
in the engine compartment.•
It is important that you read and observe the corresponding warnings
before working in the engine compartment ⇒page 209.
•
If the brake warning symbol does not go out, or if it lights up when
driving, the brake fluid level in the reservoir is too low or there is a fault in
the brake system. Risk of accident. Stop the vehicle and do not drive on.
You should obtain professional assistance.
•
If the brake warning lamp
lights up together with the ABS warning
lamp
, the control function of the ABS could be out of action. This could
cause the rear wheels to lock quickly when you brake. This could cause the
rear to break away. Risk of skidding. Drive carefully to the nearest qualified
workshop and have the fault corrected.
Brake assist system (BAS)The brake servo (BAS) works only when the engine is running.
In an emergency, most drivers brake in time, but not with maximum force.
This results in unnecessarily long braking distances.
The brake assist system intervenes here: if you press the brake pedal very
quickly, the brake assist system registers an emergency situation. It then very
quickly builds up the full brake pressure so that the ABS can be activated
more quickly and efficiently, thus reducing the braking distance.
Do not reduce the pressure on the brake pedal. The brake assist system
switches off automatically as soon as you release the brake.
WARNING
Try to always adapt the speed of the vehicle to weather, road and traffic
conditions. Do not let the extra safety afforded by the system tempt you
into taking any risks when driving. Risk of accident.•
The risk of accident is higher if yo u drive too fast, if you do not keep
your distance from the car in front, and when the road surface is slippery or
wet. The increased accident risk cannot be reduced by the brake assist
system.
•
The brake assist system cannot defy the laws of motion. Slippery and
wet roads are dangerous even with the brake assist system!
•
Modifications to the vehicle or work carried out incorrectly (e. g. to the
engine, the brake system, running gear or any components affecting the
wheels and tyres) could affect the efficiency of the ABS, EDL, ESP and TCS
and lessen their efficiency.
Anti-locking brake system (ABS)
The anti-lock brake system prevents the wheels locking
during braking.The anti-lock brake system (ABS) is an important part of the car's active safety
system.
How the ABS works
If one of the wheels is turning too slowly in relation to the road speed, and is
close to locking, the system will reduce the pressure for this wheel. The driver
is made aware of this control process by a pulsating of the brake pedal and
audible noise. This is a deliberate warning to the driver that one or more of
the wheels is tending to lock and the AB S control function has intervened. In
this situation it is important to keep the brake pedal fully depressed so the
ABS can regulate the brake application. Do not “pump” the brake pedal.
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