Driving
Glow plug system for the diesel engine
T o av
oid u
nnecessary discharging of the bat-
tery, do not use any other major electrical
equipment while the glow plugs are pre-heat-
ing.
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 mi-
nute) to start a diesel engine after refuelling.
This is because the fuel system must elimi-
nate air first. WARNING
Observe the safety warnings ›››
in Starting
petro l
engines on page 148. CAUTION
● When the engine i s
cold, you should avoid
high engine speeds, driving at full throttle
and over-loading the engine. Risk of engine
damage.
● The vehicle should not be pushed or towed
more than 50 metr
es to start the engine. Un-
burnt fuel could enter the catalytic converter
and damage it.
● Before attempting to push-start or tow a ve-
hicle in or
der to start it, you should first try to
start it using the battery of another vehicle. Please observe and follow the notes on the
›› ›
page 52, How to jump start. For the sake of the environment
Do not warm-up the engine by running the
en gine w ith the
vehicle stationary. You
should drive off as soon as you start the en-
gine. This helps the engine reach operating
temperature faster and reduces emissions. Switching off the engine
–
Stop the vehicle.
– Turn the ignition key to position ››
›
Fig. 156
1 .
Af t
er sw
itching the engine off, the radiator
fan may run on for up to 10 minutes. It is also
possible that the fan turns itself on once
more if the coolant temperature increases
due to the heat accumulated in the engine
compartment or due to its prolonged expo-
sure to solar radiation. WARNING
● Never sw it
ch the engine off until the vehi-
cle is completely stationary.
● The brake servo works only when the en-
gine is ru
nning. With the engine switched off,
more strength is needed to brake. As normal brake operation cannot be performed, risk of
acc
ident
s and serious injury may exist.
● The steering lock can be immediately
block
ed once the key is removed from the ig-
nition. The vehicle cannot be steered. Risk of
accident.
● Power-assisted steering does not work
when the engine is
off, and more strength is
needed to turn the wheel.
● If the key is removed from the ignition lock
the steerin
g lock could be engaged and vehi-
cle steering would not work. CAUTION
When the engine has been running under a
heavy lo
ad for a long period, heat can accu-
mulate in the engine compartment and cause
engine damage. For this reason, idle the en-
gine for approximately 2 minutes before
switching it off. Braking and parking
Br ak
in
g capacity and braking distance The efficiency of the brakes depends directly
on the br
ak
e p
ad wear. This wear depends to
a great extent on the conditions under which
the vehicle is operated and the way the vehi-
cle is driven. If you often drive in town, drive
short distances or have a sporty driving style,
we recommend that you have the thickness »
149
Technical data
Advice
Operation
Emergencies
Safety
Driving
Applying the handbrake
– Pull the handbrake lever up firmly
› ›
›
Fig. 157.
Releasing the handbrake
– Pull the lever up slightly and press the re-
lea
se knob in the direction of the arrow
››› Fig. 157 and guide the handbrake lever
down fully ››› .
A lw
a
ys pull the handbrake all the way up, so
there is less risk of driving off with it still en-
gaged ››› .
The h andbr
ak
e warning lamp lights up
when the handbrake is applied and the igni-
tion switched on. The warning lamp turns off
when the handbrake is released. WARNING
● Never u se the h
andbrake to stop the vehi-
cle when it is in motion. The braking distance
is considerably longer, because braking is
only applied to the rear wheels. Risk of acci-
dent!
● If the handbrake is only partially released,
this w
ill cause the rear brakes to overheat,
which can impair the function of the brake
system and could lead to an accident. This al-
so causes premature wear on the rear brake
pads. CAUTION
Always apply the handbrake before you leave
the v ehic
le. Put it in 1st gear as well. In vehi-
cles with an automatic gearbox, place the
gear lever in position P. Parking
The handbrake should always be firmly ap-
plied when the
v
ehicle is parked.
Always note the following points when park-
ing the vehicle: – Use the brake pedal to stop the vehicle.
– Apply the handbrake.
– Put it in 1st gear.
– Switch the engine off and remove the key
from the ignition. T
urn the steering wheel
slightly to engage the steering lock.
– Always take you keys with you when you
leav
e the vehicle ››› .
Ad dition
a
l notes on parking the vehicle on
gradients:
Turn the steering wheel so that the vehicle
rolls against the kerb if it started to roll.
● If the vehicle is parked facing downhil
l,
turn the front wheels so that they point to-
wards the kerb . ●
If the v
ehicle is parked facing uphill, turn
the front wheels so that they point away from
the kerb.
● Secure the vehicle as usual by applying the
handbrak
e firmly and putting it in 1st gear. WARNING
● Tak e me
asures to reduce the risk of injury
when you leave your vehicle unattended.
● Never park where the hot exhaust system
coul
d ignite inflammable materials, such as
dry grass, low bushes, spilt fuel etc.
● Never allow vehicle occupants to remain in
the vehic
le 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 vehicle
occupants.
● Never leave children alone in the vehicle.
They cou
ld set the vehicle in motion, for ex-
ample, by releasing the handbrake or the
gearbox lever.
● Depending on weather conditions, it may
become extr
emely hot or cold inside the vehi-
cle. This can be fatal. 151
Technical data
Advice
Operation
Emergencies
Safety
Driving
CAUTION
● To en s
ure that the ESC works correctly, all
four wheels must be fitted with the same
tyres. Any differences in the rolling radius of
the tyres can cause the system to reduce en-
gine power when this is not desired.
● Any modifications made to the vehicle (for
examp
le, to the engine, brake system, run-
ning gear or to the combination of wheels
and tyres) may affect the operation of the
ABS, EDL, ESC and ASR. Traction control system (ASR)*
The traction control system prevents the driv-
en wheel
s
fr
om spinning when the vehicle is
accelerating. This system always includes
ABS.
Description and operation of the traction
control system during acceleration (ASR)
On front-wheel drive vehicles, the ASR sys-
tem intervenes, reducing engine power and
preventing the driven wheels from slipping
during acceleration. The system works in the
entire speed range in conjunction with ABS.
If a failure occurs in the ABS, the ASR will al-
so stop working.
TCS helps the car to start moving, accelerate
and climb a gradient in slippery conditions
where this may otherwise be difficult or even
impossible. The ASR automatically switches on when the
engine is
started. If necessary, it could be
connected or disconnected by means of the
Easy Connect system.
When the ASR is off, the warning lamp lights
up . The ASR should normally be left on.
Only in exceptional circumstances, when
wheel spin is required, can they be turned off
using the ESC button, for example:
● With compact temporary spare wheel.
● When using the snow chains.
● When driving in deep snow or on soft ter-
rain.
● When the v
ehicle is bogged-down, to free it
“by r
ocking it.”
The ASR should be switched on again as
soon as possible.
Control lamp
There are two control lamps for the traction
control system: and . Both control lamps
light up together when the ignition is switch-
ed on and should turn off after approximately
2 seconds. This is the time taken for the func-
tion check.
The lamp has the following function:
● It flashes when the ASR is working if the ve-
hicle i
s moving. If the system is deactivated or if it has any
fault, the w
arning lamp will remain lit. The
warning lamp will also light up if a fault
should occur in the ABS because the ASR op-
erates in conjunction with the ABS. For fur-
ther information, see ››› page 153.
The lamp provides information about the
disconnection status of the system:
● It stays lit when the ASR is disconnected
via E
asy Connect.
By means of Easy Connect, the ASR function
is reactivated and the warning lamp switched
off. WARNING
● Remember th at
not even the ASR can defy
the laws of physics. This should be kept in
mind, particularly on slippery and wet roads
and when towing a trailer.
● Always adapt your driving style to suit the
condition of the r
oads and the traffic situa-
tion. The greater safety provided by the ASR
should not encourage you to run any risks. CAUTION
● To en s
ure that the ASR works correctly,
identical tyres should be fitted on all four
wheels. Any differences in the rolling radius
of the tyres can cause the system to reduce
engine power when this is not desired. » 153
Technical data
Advice
Operation
Emergencies
Safety
Driving
At speeds of up to approximately 80 km/h
(50 mph), it i
s
able to balance out differences
in the speed of the driven wheels of approxi-
mately 100 rpm/min caused by a partially
slippery road surface. It does this by braking
the wheel which has lost traction and distrib-
uting more driving force to the other driven
wheel via the differential.
To prevent the disc brake of the braking
wheel from overheating, the EDL cuts out au-
tomatically if subjected to excessive loads.
The vehicle will continue to function normally
without EDL. For this reason, the driver is not
informed that the EDL has been switched off.
The EDL will switch on again automatically
when the brake has cooled down.
Control lamp
A malfunction in the EDL is indicated by the
ABS control lamp ››› page 155. Take the
vehicle to a specialised workshop as soon as
possible. WARNING
● When acc el
erating on a slippery surface,
for example on ice and snow, press the accel-
erator carefully. Despite EDL, the driven
wheels may start to spin. This could impair
the vehicle's stability.
● Always adapt your driving style to suit road
conditions
and the traffic situation. Do not let
the extra safety afforded by EDL tempt you in- to taking any risks when driving, this can
cau
se ac
cidents. CAUTION
Modifications to the vehicle (e.g. to the en-
gine, the br ake sy
stem, running gear or any
components affecting the wheels and tyres)
could affect the efficiency of the EDL
››› page 187. Hydraulic Brake Assist (HBA)*
The function (Hydraulic Brake Assist HBA) is
on
ly
inc
luded in vehicles with ESC.
In an emergency, most drivers brake in time,
but not with maximum force. This results in
unnecessarily long braking distances.
This is when the brake assist system comes
into action. When pressing the brake pedal
rapidly, the assistant interprets it as an emer-
gency. It very quickly builds up the full brake
pressure so that the ABS can be activated
more quickly and efficiently, thus reducing
braking distance.
Do not reduce the pressure on the brake ped-
al, since the brake assist system switches off
automatically as soon as you release the
brake. Automatic hazard warning lights activation
The brake lights
flash automatically to indi-
cate that the vehicle is braking suddenly or in
an emergency situation. If the emergency
braking continues until the vehicle comes to
a standstill, the hazard warning lights will
then come on and the brake lights will re-
main on permanently from that moment. The
warning lights will automatically switch off
when the vehicle begins to move again or
when the "warning" light button is pressed. WARNING
● The risk of
accident is higher if you drive
too fast, if you do not keep your distance from
the vehicle in front, and when the road sur-
face is slippery or wet. The increased acci-
dent risk cannot be reduced by the brake as-
sist system.
● The brake assist system cannot defy the
law
s of physics. Slippery and wet roads are
dangerous even with the brake assist system!
Therefore, it is essential that you adjust your
speed to suit the road and traffic conditions.
Do not let the extra safety features tempt you
into taking any risks when driving. Anti-lock brake system (ABS)
The anti-lock brake (ABS) system prevents
the wheel
s
fr
om locking during braking and
is an important part of the vehicle's active
safety system. »
155
Technical data
Advice
Operation
Emergencies
Safety
Driving
grip on the front axle, resulting in understeer
or “l en
g
thening” of the trajectory.
The XDS system can detect and correct this
effect via the sensors and signals of the ESC.
Via the ESC, the XDS will brake the inside
wheel and counter the excess driving torque
of that wheel. This means that the driver's
desired trajectory is much more precise.
The XDS system works in combination with
the ESC and is always active, even when ASR
traction control is disconnected or the ESC is
in Sport mode.
Brake servo The brake servo increases the pressure you
ap
p
ly
to the brake pedal. It works only when
the engine is running .
If the brake servo is not functioning, e.g. due
to a malfunction, or if the vehicle is being
towed, you will have to press the brake pedal
considerably harder to make up for the lack
of servo assistance. WARNING
The braking distance can also be affected by
ext ern
al factors.
● Never let the vehicle coast with the engine
switc
hed off. Failure to follow this instruction
could result in an accident. The braking dis- tance is increased considerably when the
brak
e ser
vo is not active.
● If the brake servo is not working, for exam-
ple when the
vehicle is being towed, you will
have to press the brake pedal considerably
harder than normal. Hill driving assistant*
This function is only included in vehicles with
ESC.
The hi l
l driving assistant helps the driver to
move off and upward on a hill when the vehi-
cle is stationary.
The system maintains brake pressure for ap-
proximately two seconds after the driver
takes his foot off the brake pedal to prevent
the vehicle from lurching backward when it is
started. During these 2 seconds, the driver
has enough time to release the clutch pedal
and accelerate without the vehicle moving
and without having to use the handbrake,
making start-up easier, more comfortable
and safer.
These are the basic operation conditions:
● being on a ramp or hill/slope,
● doors closed,
● vehicle completely stationary,
● engine running and foot on the brake, ●
bes ide
s having a gear engaged or being in
neutral for manual gear change and with the
selector lever at position S, D or R for an au-
tomatic gearbox.
This system is also active when reversing up-
hill. WARNING
● If y
ou do not start the vehicle immediately
after taking your foot off the brake pedal, the
vehicle may start to roll back under certain
conditions. Depress the brake pedal or use
the hand brake immediately.
● If the engine stalls, depress the brake ped-
al or u
se the hand brake immediately.
● When following a line of traffic uphill, if you
want t
o prevent the vehicle from rolling back
accidentally when starting off, hold the brake
pedal down for a few seconds before starting
off. Note
The Official Service or a specialist workshop
can t el
l you if your vehicle is equipped with
this system. 157
Technical data
Advice
Operation
Emergencies
Safety
Driving
Selecting the normal programme
– Put the selector lever into position D.
Sel ectin
g the s
port programme
– Put the selector lever into position S.
If y
ou select the normal programme, D, you
will drive in the economy mode, i.e. the pro-
gramme is designed to reduce fuel consump-
tion. The gearbox changes up into a higher
gear as soon as possible and down into a
lower gear as late as possible.
If you select the sport programme, S, you will
drive in a sporty mode, i.e. a programme in
which shifts into high gears are postponed in
order to use the full power of the engine.
Selector lever positions Read the additional information carefully
› ›
›
page 38
Selector lever positions
The gear selected is displayed on the side of
the selector lever and on the display 1)
in the
combi-instrument. The currently selected gear for the automatic gearbox will also be
shown on the dis
play.
Tiptronic gear indicator
If the automatic gearbox is shifted manually,
the selected gears are shown on the screen
at all times 1)
.
P - parking lock
When the selector lever is in this position,
the driven wheels are locked mechanically.
Position P on the lever must only be selected
if the vehicle is stationary.
To move selector lever from position P, the
locking button on the selector lever handle
must be pressed and the brake pedal de-
pressed at the same time while the ignition is
switched on.
To put the selector lever in position P, simply
press the lock button down and, if necessary,
depress the brake pedal down.
R - Reverse gear
The reverse gear is engaged in this position.
Reverse gear must be engaged only when the
vehicle is stationary and the engine is idling. To move the selector lever to position R,
pres
s the lock button down and, at the same
time, press the brake pedal down, with the
ignition switched on.
With the selector lever in position R and the
ignition switched on the following occurs:
● Reverse lights light up.
● The air conditioner automatically changes
the air recir
culation mode.
● The wiper starts if the windscreen washer is
on.
● The parking distance warning system*
switc
hes on.
N - Neutral (idling)
If this position is selected, the gearbox is in
neutral. Power is not transmitted to the
wheels and the engine does not have a brak-
ing function.
Never use the N position to drive down a long
hill. There is no engine braking and the
brakes are subjected to excessive stain.
You could damage the automatic gearbox if
you drive down hills with the gearbox lever in
position N and the engine switched off. »1)
Vehicles with the basic level of equipment do not
show the po s
ition of the gear selector lever on the
screen. 159
Technical data
Advice
Operation
Emergencies
Safety
Driving
Selector lever lock Fig. 158
Automatic gearbox The selector lever lock in position P or N pre-
v
ents
g
ears from being engaged inadvertent-
ly, which would cause the vehicle to move.
The selector lever lock is released as follows:
– Switch the ignition on.
– Press and hold the brake pedal and press
the selector l
ever lock on the left of the se-
lector lever at the same time ››› Fig. 158.
The warning lamp on the instrument panel
lights up when the brake pedal should be ap-
plied. This is essential when the selector lev-
er is taken from the P or N positions.
Level lock only engages with the vehicle sta-
tionary at a speed of up to 5 km/h (3 mph).
At speeds of over 5 km/h (3 mph) the selec-
tor lever lock is automatically deactivated in
position N. The selector lever lock is not engaged if the
selector l
ever is moved quickly through posi-
tion N (e.g. when shifting from R to D). This
makes it possible, for instance, to “rock” the
vehicle backwards and forwards if it is stuck
in snow or mud. The selector lever lock en-
gages automatically if the brake pedal is not
depressed and the lever is in position N for
more than about 1 second.
Selecting gears manually with Tip-
tronic mode
* Fig. 159
Changing gear with Tiptronic. Fig. 160
Steering wheel with paddle levers
for aut om
atic gearbox. The Tiptronic system allows the driver to se-
l
ect
g
ears manually.
Changing gear with the selector lever – Press the selector lever from position D to
the right int
o the tiptronic selector gate.
– Lightly press the selector lever forward
›››
Fig. 159 + to change up to a higher
g e
ar
.
– Lightly press the selector lever backward
›››
Fig. 159 - to change down to a lower
g e
ar
.
Changing gear with the steering wheel pad-
dle levers*
– Press the right paddle lever + towards the
s t
eerin
g wheel to change up ››› Fig. 160.
– Press the left paddle lever - towards the
s t
eerin
g wheel to change down ››› Fig. 160. »
161
Technical data
Advice
Operation
Emergencies
Safety
Driving
Starting the vehicle up hills
– Apply the handbrake.
– With a selected gear, accelerate slowly and
at the s
ame time, r
elease the handbrake.
The steeper the slope, the lower the needed
gear. This increases the braking effect of the
engine. For example, when driving down a
very steep slope in third gear. If the engine
brake effect is not enough, the vehicle will
speed up. The automatic gearbox automati-
cally changes up to prevent the engine over-
revving. Use the foot brake to reduce speed
and change into 3rd gear using Tiptronic*
››› in Selector lever positions on page 160.
Y our
v
ehicle has an automatic interlock
which prevents the selector lever from 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 unless
the selector lever is in position P.
Control lamp “Pressing brake pedal”
When the warning lamp next to the selector
lever lights up, press the brake pedal. This is
necessary when the automatic gearbox selec-
tor lever is moved out of positions P or N. A
text message or instructions to perform nec-
essary operations may appear on the instru-
ment panel. CAUTION
● If y
ou stop the vehicle up hills, do not at-
tempt to stop it from rolling back by depress-
ing the accelerator when a gear has been se-
lected. Otherwise, the automatic gearbox
may overheat causing damage. Pull the hand-
brake up or fully depress the brake pedal to
prevent the vehicle from rolling away.
● If you allow the vehicle to roll when the en-
gine is not
running, or with the selector lever
in position N, a lack of lubrication in the auto-
matic gearbox will damage it. Kick-down feature
This feature allows maximum acceleration.
If
y
ou press the accelerator down thoroughly,
the gearbox automatically changes down, de-
pending on speed and engine speed, into a
lower gear to take full advantage of give the
vehicle maximum acceleration.
The gearbox does not change gear until the
engine reaches the maximum determined en-
gine speed for the gear. WARNING
You could lose control of the vehicle if you ac-
cel er
ate on slippery road surfaces. Risk of se-
rious injury.
● Be particularly careful when using the kick-
down fe
atures on slippery road surfaces. With a fast acceleration, the vehicle could lose
traction and sk
id.
● Y
ou should use the kick-down feature only
when traffic and w
eather conditions allow it
to be used safely. Gearbox malfunctions
Gearbox: Fault! Stop the ve-
hicle and place the lever in the
position P.
There i s
a fault in the gearbox. Stop the vehi-
cle in a safe place and do not continue driv-
ing. Seek specialist assistance.
Gearbox: System fault! You
may continue driving.
Have the fault corrected by a specialised
workshop without delay. Gearbox: System fault! You
can continue driving with re-
strictions. Reverse gear disa‐
bled
Take the vehicle to a specialised workshop
and have the fault repaired without delay. Gearbox: System fault! You
can continue driving in D until
switching off the engine »
163
Technical data
Advice
Operation
Emergencies
Safety