Operation
●
Any modific
ations made to the vehicle (for
example, to the engine, brake system, run-
ning gear or to the combination of wheels
and tyres) may affect the operation of the
ABS and ASR. Connecting/disconnecting ESC and
ASR
The ESC is switched on automatically when
the engine i
s
started, and only works when
the engine is running and includes the ABS,
EDS and ASR systems.
The ASR and ESC function should only be
switched off in situations in which traction is
insufficient, among others:
● When driving in deep snow or on surfaces
that ar
e not very firm.
● To “free” the vehicle if it gets stuck.
Then switc
h the ASR and ESC function back
on.
Depending on finishes and versions, it is
possible either to disconnect only the ASR or
else activate ESC Sport mode.
ESC in “Sport” mode
Sport mode can be connected via the Easy
Connect ››› page 99 system menu. The ability
of the ESC to stabilise the vehicle is limited; the traction control system (ASR) becomes
disab
led ››› .
The c ontr
o
l lamp lights up. For vehicles
with a driver information system*, the driver
will be shown the electronic stability
control (ESC) option: sport.
Warning! Limited stability.
Disable ESC “Sport” mode
Through the Easy Connect system menu
››› page 99. The warning lamp will switch
off. For vehicles with a driver information sys-
tem*, the driver will be shown the elec-
tronic stability control (ESC)
option: on.
Disable ASR
The Easy Connect system menu is used to
switch off the ASR ››› page 99. The traction
control system will be disabled.
The control lamp lights up. For vehicles
with a driver information system* the driver
will be informed that ASR is disabled.
Activate ASR
The Easy Connect system menu ››› page 99 is
used to switch on the ASR. The traction con-
trol system will be enabled.
The control lamp switches off. For vehicles
with a driver information system* the driver
will be informed that ASR is enabled.●
Activat e or deactivate the ASR or ESC func-
tion in the Easy Connect system by means of
the button and the function buttons
Set up and
E
SC
System .
WARNING
You should switch on the ESC Sport mode on-
ly if the tr
affic conditions and your driving
ability allow you to do so safely: risk of skid-
ding!
● With ESC in Sport mode, the stabilising
function w
ill be limited to allow for a sportier
drive. The driving wheels could spin and the
vehicle could skid. Note
If the ASR is disconnected or the ESC’s Sport
mode is sel
ected, cruise control* will be
switched off. Electronic differential lock (EDS)*
The EDL operates along with the ABS in vehi-
c
l
e
s equipped with Electronic Stability Con-
trol (ESC)*.
EDL helps the vehicle to start moving, accel-
erate and climb a gradient in slippery condi-
tions where this may otherwise be difficult or
even impossible.
It uses the ABS sensors to monitor the speed
of the driven wheels.
154
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
Operation
How the ABS works
If one of
the wheel
s turns too slowly in rela-
tion to the vehicle's speed, and is close to
locking, the system will reduce the braking
pressure to 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
ABS control function has intervened. In this
situation it is important to keep the brake
pedal fully depressed so the ABS can regu-
late the brake application. Do not “pump”.
If you brake hard on a slippery road surface,
the best possible control is retained as the
wheels do not lock.
However, ABS will not necessarily guarantee
shorter braking distances in all conditions.
Braking distance could even be further if you
brake on gravel or on fresh snow on a slip-
pery surface.
Control lamp
The control lamp lights up for a few sec-
onds when the ignition is switched on. It
goes out again after the system has run
through an automatic test sequence.
There is a fault in the ABS if:
● The control lamp does not
light up when
the ignition is switched on. ●
The contro
l lamp does not go out again af-
ter a few seconds.
● The control lamp lights up when the vehicle
is mo
ving.
The vehicle can still be braked in the normal
way, without the ABS function. Take the vehi-
cle to a specialised workshop as soon as
possible.
If there is a fault in the ABS, the ESC* and the
tyre pressure control lamp will also light up.
Brake system fault
If the ABS warning lamp lights up together
with the brake warning lamp , there is a
fault in the ABS function and in the brake
system ››› .
WARNING
● The anti-lock br
ake system cannot defy the
laws of physics. Slippery and wet roads are
dangerous even with ABS! If you notice that
the ABS is working (to counteract locked
wheels under braking), you should reduce
speed immediately to suit the road and traffic
conditions. Do not let the extra safety fea-
tures tempt you into taking any risks when
driving.
● The effectiveness of ABS is also determined
by the ty
res fitted ››› page 210.
● If the running gear or brake system is modi-
fied, the effectivene
ss of the ABS could be se-
verely limited. WARNING
● Bef or
e opening the bonnet, read and ob-
serve the warnings ››› page 198, Working in
the engine compartment.
● If the brake system warning lamp should
light
up together with the ABS warning lamp
, stop the vehicle immediately and check
the brake fluid level in the reservoir
››› page 206, Brake fluid. If the brake fluid
level has dropped below the “MIN” mark you
must not drive on. Risk of accident. Obtain
technical assistance.
● If the brake fluid level is correct, the fault in
the brake sy
stem may have been caused by a
failure of the ABS system. This could cause
the rear wheels to lock quickly when you
brake. This could cause the rear to break
away. Risk of skidding. Stop the vehicle and
seek technical assistance. Electronic differential lock (XDS)*
When taking a curve, the driveshaft differen-
ti
al
mec
hanism allows the outer wheel to turn
at a higher speed than the inner wheel. In
this way, the wheel that is turning faster (out-
er wheel) receives less drive torque than the
inner wheel. This may mean that in certain
situations the torque delivered to the inner
wheel is too high, causing the wheels to
spin. On the other hand, the outer wheel is
receiving a lower drive torque than it could
transmit. This causes an overall loss of lateral
156
Operation
Manual gearbox Driv in
g w
ith manual gearboxRead the additional information carefully
›› ›
page 37
Certain versions of the model may include a
6-speed manual gearbox, and its diagram is
shown on the gearbox lever.
The reverse gear can only be engaged when
the car is stationary. When the engine is run-
ning and before engaging this gear, wait
about 6 seconds with the clutch pressed
down thoroughly in order to protect the gear-
box.
The reverse lights switch on when the reverse
gear is selected and the ignition is on. WARNING
● When the engine i s
running, the vehicle
will start to move as soon as a gear is engag-
ed and the clutch released.
● Never select the reverse gear when the ve-
hicle i
s in motion. Risk of accident. Note
● Do not r e
st your hand on the gear lever
while driving. The pressure of your hand
could cause premature wear on the selector
forks in the gearbox. ●
When ch an
ging gear, you should always
depress the clutch fully to avoid unnecessary
wear and damage.
● Do not “slip” the clutch to hold the vehicle
on a hill
. This causes premature wear and
damage to the clutch.
● Do not leave your foot on the clutch pedal;
although the pre
ssure may seem insignifi-
cant, it can cause the premature wear of the
clutch plate. Use the foot rest when you do
not need to change gear. Gear-change indicator
3 V
alid for vehicles: with a manual gearbox
The r
ecommended gear for saving fuel is in-
dicated on the dash screen of certain vehi-
cles during driving.
DisplayMeaning
The optimal gear is selected.
Changing to a higher gear is recommended.
Changing to a lower gear is recommended.
Information regarding the “cleanliness” of
the die
sel
p
articulate filter
The exhaust system manager detects that the
diesel particulate filter is nearly saturated
and contributes to self-cleaning by recom-
mending the optimal gear. For this purpose, it might be necessary to drive momentarily
with a high rpm
››
› page 167. WARNING
The gear change indicator is only an auxiliary
fu nction and in no c
ase should be a substi-
tute for careful driving.
● The responsibility of choosing the correct
gear dependin
g on the situation (e.g. over-
taking, driving up or down a slope or towing a
trailer) lies with the driver. For the sake of the environment
Selecting the correct gear can help to save
fuel . Note
The recommended gear display is switched
off when the c lut
ch pedal is pressed. Automatic gearbox*
Driv ing pr
ogrammes Read the additional information carefully
› ›
›
page 38
The automatic gearbox has got two gearbox
programmes.
158
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
Driving
exhaust can come into contact with flamma-
bl
e m
aterials under the car (e.g. on grass or
at the forest edge). Fire hazard!
● Do not apply wax underneath the vehicle
around the ar
ea of the exhaust system: Fire
hazard! Note
While the control lamps , , or r
e-
m ain lit, ther
e may be engine problems, fuel
consumption may increase and the engine
may lose power. Catalytic converter
To maintain the useful life of the catalytic
c
on
v
erter
– Use only unleaded petrol with petrol en-
gines, as
lead damages the catalytic con-
verter.
– Do not let the fuel get too low in the tank.
– For engine oil changes, do not replenish
with too muc
h engine oil ››› page 203, Top-
ping up engine oil.
– Never tow the vehicle to start it, use jump
lea
ds if necessary ›››
page 52.
If you notice misfiring, uneven running or
loss of power when the vehicle is moving, re-
duce speed immediately and have the vehi-
cle inspected at the nearest specialised workshop. In general, the exhaust warning
lamp wi
ll light up when any of the described
symptoms occur ››› page 98. If this happens,
unburnt fuel can enter the exhaust system
and escape into the environment. The cata-
lytic converter can also be damaged by over-
heating. CAUTION
Never run the fuel tank completely dry be-
cau se the irr
egularity of the fuel supply may
cause ignition problems. This allows unburnt
fuel to enter the exhaust system, which could
cause overheating and damage the catalytic
converter. For the sake of the environment
Even when the emission control system is
work in
g perfectly, there may be a smell of
sulphur from the exhaust gas under some
conditions. This depends on the sulphur con-
tent of the fuel used. Quite often the problem
can be solved by changing to another brand
of fuel. Diesel engine particulate filter*
Fig. 161
Vehicle data sticker on back cover of
the M aint
en
ance Programme. Your vehicle is fitted with a DPF (Diesel Partic-
u
l
at
e Filter) if the vehicle data sticker (back
cover of the “Maintenance Programme”) lists
the code PR 7GG ››› Fig. 161.
The diesel engine particulate filter eliminates
most of the soot from the exhaust gas sys-
tem. Under normal driving conditions, the fil-
ter cleans itself. If this is not possible (for ex-
ample, multiple short trips) the filter will be
obstructed by soot and the diesel engine
particulate filter warning lamp will light up.
This does not represent a fault, it is a warning
that indicates that the filter has not been
able to regenerate automatically and that you
must perform a cleaning cycle, as indicated
below. »
167
Technical data
Advice
Operation
Emergencies
Safety