Operation
Go to a specialised workshop as soon as
po s
s
ible and have the fault repaired. WARNING
Take it immediately to a specialised work-
shop and hav e the f
ault repaired: risk of acci-
dent! Note
If the lamp (in red) or (in
yellow) lights
up briefly, you may continue driving. Start-up lock security system (immo-
b
i
li
ser) There is an electronic chip in the key. The
el
ectr
onic
immobiliser is deactivated when
the key is inserted into the ignition. The elec-
tronic immobiliser is automatically activated
when the key is removed from the ignition.
The engine will not start if an unauthorised
key is used.
The informative display indicates:
Immobiliser active! Ignition lock
Fig. 173
Ignition key positions. Petrol engines
1 – Ignition switched off, engine stopped,
s t
eerin
g can be locked
2 – Ignition switched on
3 – Starting
Die sel
en
gines
1 – Fuel supply stopped, ignition switched
off , en
gine s
topped, steering can be locked
2 – Engine pre-heating, ignition switched
on
3 – Starting
T o en
g
age the Steering lock without the key
in the ignition, turn the steering wheel slight-
ly until you hear it engage. If the
steering lock is engaged and it i
s diffi-
cult or impossible to turn the key to position 2 , release the lock by turning the steering
wheel s
lightly
in both directions.
154
Driving
Starter button Fig. 174
In the steering column: start-up
p u
sh b
utton for the Keyless Access lock and
start-up system. The layout in right-hand
drive vehicles is symmetrical. Fig. 175
Emergency ignition in vehicles with
K eyl
e
ss Access. The start-up button may only be used if there
i
s a
valid key in the vehicle. Opening the driver's door
when exitin
g the
vehicle activates the electronic lock on the
steering column if the ignition is disabled.
Switching the ignition on/off
● Briefly push the start-up button ›››
Fig. 174
without touching the brake or clutch ped-
al ››› .
Emer g
ency
starting function
If no valid key is detected inside the vehicle,
an emergency start-up will be required. The
relevant message will appear in the dash
panel display. This may happen when, for ex-
ample, the vehicle key battery is very low or
flat:
● Immediately after pushing the start-up but-
ton, keep the
vehicle key next to the steering
column ››› Fig. 175.
● The ignition connects and the engine starts
automatic
ally.
Emergency disconnection
If the engine does not stop after briefly press-
ing the start-up button, an emergency dis-
connect will be required:
● Press the starter button twice within 1 sec-
ond or pres
s it once for more than 2 seconds
››› .
● The engine turns off automatically. Engine restart feature
If
no
v
alid key is detected inside the vehicle
after the engine stops, you will only have 5
seconds to restart it. A warning will display
on the dash panel screen.
After this interval, it will not be possible to
start the engine without a valid key inside
the vehicle. WARNING
Any accidental movement of the vehicle could
re s
ult in serious injury.
● When pressing the start-up button, do not
pre
ss the brake or clutch pedal, this way the
engine will start immediately. WARNING
If vehicle keys are used negligently or with-
out due c ar
e, this may cause accidents and
serious injury.
● Never leave any key inside the vehicle
when exitin
g. Otherwise, a child or unauthor-
ised person could lock the vehicle, start the
engine or connect the ignition and, in this
way, operate electronic equipment (e.g. the
windows). Note
● In diesel
vehicles with the Keyless Access
system, there may be a delay in the engine
starting if it requires preheating. » 155
Technical data
Advice
Operation
Emergencies
Safety
Operation
●
If the v
ehicle is stationary for a long time
with the ignition on, the vehicle battery
might be discharged and it might not be pos-
sible to start the engine. Starting the engine
Vehicles with a
diesel en
gine are equipped
with a glow plug system. When you switch on
the ignition, the glow plug warning lamp
will light up. The engine can be started
straight away when the lamp switches off.
Do not connect electrical appliances during
preheating so as not the drain the vehicle
battery unnecessarily.
Starting the engine
● Move the gearbox lever into neutral or
mov e the sel
ector lever to position P or N and
pull firmly on the handbrake.
● Press the clutch pedal all the way down
and star
t the engine 3
› ›
› Fig. 173
›
›› page 154, without pressing the accelera-
tor. Keep the clutch pedal pressed down until
the engine starts.
● Release the ignition key as soon as the en-
gine star
ts. The key returns to position 2 .
● If the engine does not start after 10 sec-
ond s, t
urn the k
ey back to position 1 . Re-
pe at
the action af
ter 30 seconds.
● Release the handbrake before moving off. Switching off the engine with the key Stop the engine by turning the ignition key to
pos
ition 1
››› Fig. 173 ›
›› page 154.
Brakes and brake servo sys-
tems Introduction WARNING
● The brak e ser
vo only works when the en-
gine is running. Braking when the engine is
switched off requires applying more strength
to the brake pedal. Risk of accident!
● Press down on the clutch pedal when stop-
ping and brak
ing with a manual gearbox, pet-
rol engine vehicle at low speed. Otherwise,
the brake servo might not work properly. Risk
of accident!
● In the event of damage to the standard
front s
poiler or where a different front spoil-
er, wheel trims, etc. are subsequently fitted,
make sure the air vent to the brakes on the
front wheels is not blocked. Otherwise, brak-
ing operations may be impaired. Risk of acci-
dent!
● Always fully release the handbrake. If it is
only p
artially released, this will cause over-
heating of the rear brakes, which can impair
the function of the brake system. Risk of acci-
dent! ●
Never l e
ave children unsupervised in the
vehicle. They could release the handbrake or
move the gear lever. The vehicle could start
moving. Risk of accident!
● Insufficient fuel can cause the engine to run
irregu
larly or to switch off. Brake assist sys-
tems could be impaired. Risk of accident!
● Always adjust your driving style to suit visi-
bility
, the weather and road and traffic condi-
tions. The best vehicle safety offered by
brake assist systems must never encourage
you to run greater risks. Risk of accident! CAUTION
● Ob ser
ve the information concerning new
brake pads ››› page 165.
● Where braking is not necessary, do not
wear do
wn the brake pads by pressing down
gently on the brake pedal. This causes the
brakes to overheat, increasing their wear and
increasing braking distances.
● To ensure the brake assist systems work
properly, a
ll wheels must be fitted with tyres
approved by the manufacturer. Note
● If y
ou brake suddenly and the brake system
control unit regards the situation as hazard-
ous for the drivers behind you, the brake
lights will begin to flash automatically. After
reducing speed to approximately 10 km/h (6
mph) or stopping the vehicle, the brake lights
will stop flashing and the hazard warning 156
Driving
lights will switch on. The hazard warning
lights
ar
e automatically switched off when
you accelerate or restart the vehicle.
● On long, steep gradients, reduce your
speed and ch
ange to a lower gear (manual
gearbox) or move the selector lever to a lower
gear position (automatic gearbox). This uses
the force of the engine and the brakes do not
suffer as much. If you still have to brake, do
so intermittently, pressing down repeatedly
on the brake pedal.
● Vehicle modifications (e.g. to the engine,
brake
s, frame or a combination of wheels and
tyres) could impair the brake assist systems
››› page 194, Accessories and modifications
to the vehicle .
● In the event of a fault in the ABS system,
the ESC, T
CS and EDL are switched off auto-
matically. A fault in the ABS is indicated by
the ››› page 159 warning lamp. Control lamp
The warning lamp i
l
lumin
ates if the brake
fluid level is too low or if there is a fault in the
ABS system.
The informative display indicates:
Brake fluid Instruction Manual!
Stop the vehicle, switch off the engine and
check the level of the brake fluid
››› page 211 WARNING
● The fo l
lowing indications must be taken in-
to account when opening the engine com-
partment to check the brake fluid
››› page 204, Engine compartment.
● If the warning lamp illumin
ates together
with the warning lamp ››› page 159, ,
stop the vehicle! Go to a technical service.
● A fault in the brake system or in the Anti-
lock br
ake system (ABS) can lead to longer
braking distances – Risk of accident! Brakes
Wear
The r
at
e of
wear of the brake pads depends
on the driving style and on the way in which
the vehicle is used. The brake pads will wear
more quickly if you use your vehicle frequent-
ly in urban traffic and short trips or drive in a
sporty style. Under these demanding condi-
tions, visit your specialised service, even be-
fore the scheduled service date, so that the
thickness of the brake pads can be meas-
ured.
Wet roads or road salt
If brakes are wet or frozen, or if you are driv-
ing on roads which have been gritted with
salt, braking power may set in later than nor-
mal. Dry the brakes as soon as possible by
braking repeatedly. Corrosion
Long period
s of inactivity and little use can
lead to rust on the brake discs and dirt on the
brake pads. Where the brake system is sub-
jected to light stress or in the case of corro-
sion, clean the brake discs by braking fully
several times at a high speed.
Brake system fault
If you notice that the braking distance sud-
denly increases and the brake pedal can be
pressed down more fully, there may be a fault
in the brake system. Visit a specialised serv-
ice immediately and adjust your driving style
to the extent of the damage and to limit the
effect of the brakes.
Low brake fluid level
Insufficient brake fluid could cause faults in
the brake system. The brake fluid level is con-
trolled electronically ››› page 157, Control
lamp.
Brake servo
The brake servo supplements the pressure
you exert on the brake pedal. The brake servo
only works when the engine is running.
157
Technical data
Advice
Operation
Emergencies
Safety
Operation
Go to a technical service.
Electronic differential lock If one of the wheels starts to skid, the EDL
brak
e
s that wheel, transmitting the driving
force to the other wheels. This increases ve-
hicle stability and improves driving stability.
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. The EDL will switch on again au-
tomatically when the brake has cooled down. Manual gearbox
Chan gin
g gears Fig. 177
Gear shift diagram of a 5- or 6-speed
m anual
g
earbox Read the additional information carefully
› ›
›
page 35
When changing gear, always depress the
clutch pedal fully and keep it pressed down
to avoid excessive clutch wear.
In order to drive at an optimum RPM, follow
the gear change indications ›››
page 29.
Engage reverse gear only when the vehicle is
stopped. On engaging reverse gear while the
engine is running, first wait a moment with
the clutch pedal pressed down fully to limit
gear shift noise.
The reverse lights switch on when the reverse
gear is selected and the ignition is on. WARNING
Never engage reverse gear when moving for-
war d. Ri
sk of accident! Note
Do not rest your hand on the gear lever while
drivin g.
The pressure of your hand could lead
to premature wear of the gear system. Automatic gearbox
Ba s
ic information The gearbox changes up and down automati-
c
al
ly
. The gearbox can be set to Tiptronic
mode. The gears can be changed manually in
this mode ›››
page 163.
The engine can only be started in positions P
or N. If, on engaging the steering lock,
switching the ignition on/off or starting the
engine, the selector lever is not in these posi-
tions, the informative display will show Move
the selector lever to position
P/N! , or
P/N is shown on the general
dash panel display.
At temperatures below -10°C (14°F), the en-
gine can only be started in position P.
Move the selector lever to position P when
parking the vehicle on a flat surface. On a
160
Driving
slope, the handbrake should be firmly ap-
p lied bef
or
e moving the selector lever to the
park position. This reduces the load on the
lock mechanism while making it easier to
move the selector lever from position P.
If, while the vehicle is moving, the selector
lever is accidentally moved to position N, re-
lease the accelerator and wait for the engine
to idle before moving it back into position. WARNING
● Never pr e
ss the accelerator when selecting
the automatic gearbox operating mode when
the vehicle is stationary. Risk of accident!
● Never move the selector lever to positions
R or P when driving. Ri
sk of accident!
● If the vehicle is to be stopped with a gear
selected and the en
gine idling (e.g. waiting
or moving slowly at traffic lights), press down
on the brake pedal because the transmission
is not entirely interrupted when the engine is
idling and the vehicle will tend to start mov-
ing.
● Apply the handbrake firmly and put the se-
lector l
ever in position P before opening the
bonnet and working on the vehicle with the
engine running. Risk of accident! Strictly fol-
low the safety instructions ››› page 204, En-
gine compartment.
● When stopping on a slope (hill), try not to
stop the
vehicle from moving by pressing the
“accelerator” with a gear selected. This could
overheat the clutch. If the clutch risks being burnt due to this force, it would switch off
and the v
ehic
le could move backwards. Risk
of accident!
● If you have to stop on a hill, press down on
the brake ped
al to stop the vehicle from mov-
ing.
● The drive wheels could lose traction on a
slipper
y road surface when the kick-down
function is activated. Risk of sliding! CAUTION
● In D SG aut om
atic gearboxes, the double
clutch is protected from overloads. If the hill
hold control is used, the clutches are subjec-
ted to greater force if the vehicle is at a
standstill on a slope or suddenly accelerating
on a slope.
● Should the clutches overheat, the sym-
bol i
s shown on the informative display with
a warning message Gear overheated.
Stop! Instruction Manual! An audible
warning is also heard. Stop the vehicle in this
case, stop the engine and wait until the sym-
bol has switched off. Danger of damage to
the gearbox! You can continue driving once
the symbol is switched off. Starting and driving
Starting
– Press and hold the brake pedal. –
Pr e
s
s and hold the interlock button on the
selector lever knob and move the selector
lever to position ››› page 162 before releas-
ing the interlock button.
– Release the brake and press the accelera-
tor.
St
opping
– The selector lever does not have to be
moved t
o position N if the vehicle is stop-
ped for a short period, e.g. at intersections.
Applying the brake is enough. However, the
engine must remain idling.
Parking
– Press the brake pedal.
– Apply the handbrake.
– Press the interlock button, move the selec-
tor lev
er to position P and release the but-
ton.
Kick-down feature
The kick-down feature allows maximum ac-
celeration to be reached.
In any gear programme, press down fully on
the accelerator for the automatic gearbox to
activate the kick-down feature. This function
takes priority over the gear programmes with-
out taking into account the position of the se-
lector lever (D, S or Tiptronic) and is used to
reach maximum acceleration, using full »
161
Technical data
Advice
Operation
Emergencies
Safety
Operation
engine power. Depending on the road speed
and en gine s
peed, the aut
omatic gearbox
shifts down and the vehicle accelerates. It
only shifts up after the maximum engine
speed has been reached.
Selector lever positions Fig. 178
Gear selector lever Fig. 179
Informative display: selector lever
po sition
s. Read the additional information carefully
› ›
›
page 36
The current position of the selector lever is
shown on the general instrument panel dis-
play 1
› ››
Fig. 179
.
P – Parking position
In thi s
po
sition, the driven wheels are me-
chanically locked.
The parking position can only be selected
when the vehicle is stationary.
If you want to move the selector lever from
this position, press the interlock button on
the selector lever knob while pressing down
on the brake pedal.
If the battery is drained, the selector lever
cannot be moved from position P.
R – Reverse gear
R ev
er
se gear must be engaged only when the
vehicle is stationary and the engine is idling.
To move the selector lever to position R from
positions P or N, press the interlock button
on the selector lever knob and press down on
the brake pedal.
The reverse lights come on when the selector
lever is in position R and the ignition is on.
N – Neutral (idling)
Neutr al
(idlin
g) is engaged in this position. To move the selector lever from position N (if
the lever h
as remained in this position for
more than 2 seconds) to position D or R at
speeds of less than 5 km/h (3 mph) and
when the vehicle is stationary, press down on
the brake pedal.
D – Drive (forwards)
In thi s
po
sition, the gearbox automatically
changes to a lower or higher gear, depending
on engine requirements, the driving speed
and the gear shift programme.
To move the selector lever to position D from
position N at speeds of less than 5 km/h (3
mph) and when the vehicle is stationary,
press down on the brake pedal.
In some situations (e.g. on mountain roads or
when towing a trailer or caravan), it can be
advantageous to switch temporarily to the
manual shift programme ››› page 163 so that
the gear ratios can be selected manually to
suit driving conditions.
S – Sports driving position
Shif tin
g up l
ater than usual makes full use of
the engine power. This shifts down earlier in
relation to position D.
To move the selector lever to position S from
position D, press the interlock button on the
selector lever knob.
162
Driving
Tiptronic gearbox Fig. 180
Selector lever: Tiptronic. The Tiptronic gearbox allows the driver to
c
h
an
ge gears manually using the selector
lever.
Activating the manual gearbox
– From position D, push the sel
ector lever to
the right. The selected position of the se-
lector lever is shown on the general instru-
ment panel display together with the gear
engaged 1
› ›
› Fig. 179
.
Shifting up – Push the selector lever gently forwards +›››
Fig. 180. Shifting down
– Push the selector lever gently backwards
-
› ››
Fig. 180
.
The m
anual gearbox can be activated when
the vehicle is either moving or stationary.
When accelerating, the gearbox automatical-
ly shifts up shortly before the maximum en-
gine speed is reached.
On shifting up, the gear is only engaged
when there is no risk of engine damage.
When the accelerator pedal is pressed down
to the kick-down zone, the gearbox will shift
down in line with the road speed and engine
speed. Note
The kick-down function is also available in
manua l
shift mode. Selector lever lock
Automatic selector lever lock
The sel ect
or l
ever is locked in the positions P
and N when the ignition is on. Press down on
the brake to unlock it. Remember, if the se-
lector lever is in positions P and N, the warn-ing lamp wil
l light up on the general in-
strument panel.
When the selector lever merely moves
through position N (e.g. when moved from R
to D), the lever lock is not applied. This
makes it possible, for example, to rock a
stuck vehicle backwards and forwards. The
lock is only applied if the brake is not press-
ed and the selector lever is moved to position
N for more than 2 seconds.
The selector lever only locks when the is vehi-
cle stationary or driving at a speed lower
than 5 km/h (3 mph). At a higher speed, it
automatically disconnects in the N position.
Interlock button
The interlock button on the selector lever
knob prevents the driver from inadvertently
engaging a gear. Press the button to unlock
the selector lever.
Safety interlock for ignition key 1)
After switching off the ignition, you can only
remove the ignition key if the selector lever is
in position P. When the ignition key is re-
moved, the selector lever is locked in posi-
tion P. 1)
Valid only for certain countries.
163
Technical data
Advice
Operation
Emergencies
Safety