The pressure in the brake system is sufficient.
The difference between the outdoor- and the set temperature in the interior is
not too great.
The vehicle speed since the last time the engine was switched off was greater
than 3 km/h.
No cleaning of the diesel particle filter takes place
⇒ page 24The front wheels are not turned excessively (the steering angle is less than 3/4
of a steering wheel revolution). Conditions for an automatic restart (start phase)
The clutch is pressed.
The max./min. temperature is set.
The Defrost function for the windscreen is switched on.
A high blower stage has been selected.
The “START STOP” button is pressed.
Conditions for an automatic restart without driver intervention
The vehicle moves at a speed of more than 3 km/h.
The difference between the outdoor- and the set temperature in the interior is
too great.
The charge state of the vehicle battery is not sufficient.
The pressure in the brake system is not sufficient.
Messages in the instrument cluster display (valid for vehicles without
Information display) ERROR: START STOP
Error in the START-STOP system
START STOP NOT POSSIBLE Automatic engine shut down is not
possible
START STOP ACTIVE Automatic engine shut down (stop
phase)
SWITCH OFF IGNITION
Switch off the ignition
START MANUALLY
Start the engine manually WARNING
● The brake servo unit and power steering only operate if the engine is run-
ning.
● Never let the vehicle roll with the engine switched off. CAUTION
If the “START-STOP” system is used at very high outside temperatures over a very
long period of time, the vehicle battery can be damaged. Note
● Changes to the outdoor temperature can have an effect on the internal tem-
perature of the vehicle battery even after several hours. If the vehicle remains
outdoors for a long time in minus temperatures or in direct sunlight, it can take
several hours until the internal temperature of the vehicle battery reaches a suita-
ble temperature for proper operation of the
“START STOP” system.
● In some instances it may be necessary to start the engine manually with the
ignition key (e.g. when the seat belt is not inserted or the driver's door is opened
for more than 30 seconds). Follow the messages in the instrument cluster display.
● If the Climatronic is running in automatic mode, under certain conditions, the
engine may not switch off automatically. 111
Starting-off and Driving Using the system Safety Driving Tips General Maintenance Breakdown assistance Technical data
Automatic gearbox DSG
Automatic gearbox DSG
Information for driving with the automatic gearbox DSG The abbreviation DSG means Direct shift gearbox (Direct shift gear-
box).
Two independent clutches are needed for the power transmission between the
engine and the gearbox. These replace the torque converter of the conventional
automatic gearbox. Their shifting is matched in such a way that there are no jerks
when shifting the gear and the power transmission of the engine to the front
wheels is not interrupted. You can also, however, switch the gearbox over into the
Tiptronic mode . This mode makes it possible for you to also shift gears manually
⇒
page 115.
Starting-off and Driving
– Depress the brake pedal fully and keep it depressed.
– Press the Shiftlock button (button in handle of the selector lever), move the
selector lever into the desired position, e.g. D ⇒
page 113, and then release
the Shiftlock button.
– Release the brake pedal and depress the accelerator ⇒
.
Stop
– The selector lever position N does not have to be selected when stopping just
for a short time, such as at a cross roads. It is sufficient to hold the vehicle sta-
tionary using the foot brake. The engine can, however, be allowed just to idle.
Parking
– Depress the brake pedal and hold it depressed.
– Apply the handbrake firmly.
– Press and Shiftlock button in the selector lever, move the selector lever to P
and then release the Shiftlock button.
The engine can only be started when the selector lever is in position P or N . If the
selector lever is not in the P or N positions when locking the steering, switching
the ignition on or off or when leaving the engine on, the following message will appear in the Information display
Move selector lever to position P/N! or, in the
instrument cluster display: P/N. At temperatures below -10 °C the engine can
only be started in the selector lever position P.
It is sufficient to engage selector lever position P when parking on a flat surface.
When parking on a slope you should first apply the handbrake firmly and then
move the selector lever into position P. This is to ensure that there is no excessive
pressure acting on the lock mechanism and that it is easier to subsequently move
the selector lever out of position P. If the selector lever is not in the P positin
when the driver's door is open and the ignition is switched off, or if it is not in the
P position when the ignition is switched off and the driver's door is opened, the
following message will appear in the Information display: Move selector lever to
position P! or, in the instrument cluster display: P. The message disappears af-
ter a few seconds by switching on the ignition or by moving the selector lever into
the position P .
If the selector lever position N is selected by accident while driving it is first nec-
essary to release pressure on the accelerator pedal and wait for idling speed of
the engine to be reached before engaging a drive position in the selector lever. WARNING
● Do not depress the accelerator when changing the position of the selector
lever if the car is stationary and the engine is running - risk of accident!
● Never move the selector lever into position R or P when driving - risk of an
accident!
● If you are stopping at a hill (downhill section), never try to hold the car sta-
tionary with the gear engaged by means of the
“accelerator”, this means by
letting the clutch slip. This can lead to overheating of the clutch. If there is a
risk of overheating of the clutch due to overload, the clutch is opened auto-
matically and the vehicle rolls backward - risk of accident!
● If you must stop at a slope, depress and hold the brake pedal, so that you
can prevent the vehicle from rolling back. £112
Automatic gearbox DSG
CAUTION
● The double clutch on the automatic gearbox DSG is equipped with an overload
protection. If you make use of the uphill function on a vehicle which is stationary
or driving slowly uphill, it will result in an increase of thermal stress of the clutch-
es.
● In the event that they overheat, the warning light and a warning text ap-
pears in the information display ⇒ page 30. In such a case bring the vehicle to a
stop, switch off the engine and wait until the warning light and the warning go
out - risk of gearbox damage! You can continue the trip as soon as the warning
light and the warning go out.
Selector lever positions Fig. 106 Selector lever/information display: Selector lever positions
The current selector lever position is indicated in the information display of the in-
strument cluster
⇒ fig. 106 - right. In the positions D and S the gear you have al-
ready engaged will be additionally displayed on the display.
P - Parklock
The driven wheels are locked mechanically in this position.
The Parklock must only be engaged when the vehicle is stationary ⇒ .
If you wish to move the selector lever into or out of this position, you must press
the Shiftlock button in the handle of the selector lever and at the same time de-
press the brake pedal.
If the battery is used, the selector lever cannot be moved out of the position P.R - Reverse gear
Reverse gear must only be engaged when the vehicle is stationary and the engine
idling ⇒ .
The brake pedal must be depressed and at the same time the Shiftlock must be
pressed, if you wish to obtain the selector lever positions R, P or N.
When the ignition is switched on and the selector lever is in position R, the re-
verse lights will come on.
N - Neutral
The transmission is in Neutral in this position.
The brake pedal must be depressed (if the lever is in its position for longer than 2
seconds) in order to move the selector lever out of the position N into the position
D or R, with the ignition switched on, on a vehicle travelling at less than 5 km/
hour or on a stationary vehicle.
D - Position for driving forward
When the selector lever is in this position, the forward gears are shifted up and
down automatically in line with engine load, vehicle speed and the dynamic shift
programme.
You must depress the brake pedal if you wish to move into position D from N
when the vehicle is travelling at less than 5
km/hour or is stationary ⇒ .
Under certain circumstances (e.g. when driving in mountainous regions or when
towing a trailer) it may be beneficial to select the manual shift programme
⇒ page 115 for a short time in order to adapt the gearbox ratios manually to the
driving situations.
S - Position for sporty style of driving
Shifting up later into a higher gear makes it possible to fully exploit the power po-
tential of the engine. The gearbox also then shifts down at higher engine speeds
as in the position D .
The Shiftlock on the selector lever grip must be pressed when moving the selec-
tor lever out of the position D into the position S. £ 113
Automatic gearbox DSG Using the system Safety Driving Tips General Maintenance Breakdown assistance Technical data
WARNING
● Never move the selector lever into position R or P when driving - risk of an
accident!
● When the engine is running and the vehicle is stationary, it is necessary to
hold the car with the brake pedal in all the positions of the selector lever (ex-
cept P and N) since the power transmission is never completely interrupted,
also not when the engine is idling - the vehicle creeps.
● You must on no account unintentionally operate the throttle (e.g. by hand
from the engine compartment) if a drive position is engaged when the car is
stationary. The vehicle would otherwise immediately start off - also when the
handbrake is firmly applied - risk of an accident!
● You must move the selector lever into position P and firmly apply the
handbrake first before you or any other person opens the bonnet and starts
working on the engine when it is running - risk of accident! It is also essential
to observe all warnings ⇒
page 190, Working in the engine compartment.
Selector lever lock Automatic selector lever lock
With the ignition on, the selector lever is locked when it is in the positions P and
N. You must first of all depress the brake pedal in order to move the selector lever
out of this position. The warning light
⇒
page 27 lights up in the instrument
cluster as a reminder for the driver when the selector lever is in the positions P
and N.
A time delay element ensures that the selector lever is not blocked when rapidly
switching over the position N (e.g. from R to D). This does, for example, allow one
to seesaw out a stuck vehicle. The selector lever lock will click into place if the lev-
er is in the N position for more than 2 seconds without the brake pedal being
pressed.
The selector lever lock is only active if the vehicle is stationary or moving at speed
of less than 5 km/hour. The lock is switched off automatically into position N
when the car is travelling at a higher speed.
Shiftlock button
The Shiftlock button in the handle of selector lever prevents certain selector lever
positions being engaged inadvertently. The selector lever lock is cancelled when
you press the Shiftlock button. Keylock - Ignition key withdrawal lock
You can only withdraw the ignition key after switching off the ignition if the selec-
tor lever is in position
P. If the ignition key is withdrawn, the selector lever is
blocked in position P .
Kickdown function The kickdown function provides you with maximum acceleration
power.
Fully depressing the accelerator pedal allows the kickdown function to be activa-
ted in the desired driving program. This function has precedence over the driving
programme and serves for maximum acceleration of the vehicle when exploiting
the maximum power potential of the engine without taking into account the cur-
rent selector lever position ( D, S or Tiptronic ). The gearbox shifts down to one or
several gears in line with the driving state and the vehicle accelerates. The gear-
box does not shift up into the highest gear until the engine has reached its maxi-
mum revolutions for this gear range. WARNING
Please note that using the kickdown function can result in the driven wheels
spinning on a smooth or slippery road surface - risk of skidding!
Dynamic shift programme The automatic gearbox of your vehicle is controlled electronically. Shifting up and
down through the gears is performed automatically on the basis of pre-defined
driving programmes.
Adopting a moderate style of driving
will cause the gearbox to select the most
economical driving programme. Shifting up into a higher gear as soon as possible
and shifting down as late as possible will have a favourable effect on your fuel
consumption.
Adopting a sporty style of driving with rapid movements of the accelerator pedal
combined with sharp acceleration and frequent changes in speed, exploiting the
top speed of the car or depressing the accelerator pedal (kickdown function), will
cause the gearbox to switch over to this style of driving and shift down earlier
with frequent changes in gears in comparison to the moderate style of driving. £114
Automatic gearbox DSG
Selecting the most appropriate driving programme for the particular style of driv-
ing is a continuous process. Irrespective of this it is, however, possible to switch or
shift down into a dynamic shift programme by depressing the accelerator rapidly.
The gearbox shifts down into a lower gear matching the speed of the car and this
allows you to accelerate rapidly (e.g. when overtaking) without having to depress
the accelerator pedal fully into the kickdown range. The original programme will
be reactivated to match your particular style of driving once the gearbox has shif-
ted up again.
When driving in hilly regions, the gears are selected to match uphill and downhill
sections. This avoids the gearbox frequently shifting up and down when negotiat-
ing an uphill stretch. When driving downhill, it is possible to shift down into the
Tiptronic position, in order to exploit the engine brake torque.
Tiptronic The Tiptronic allows the driver to also shift gears manually.
Fig. 107 Selector lever: manual shifting/information display: Manual shifting of gears
The selector lever position you have engaged is indicated in the information dis-
play of the instrument cluster together with the engaged gear
⇒ fig. 107 - right.
Switching over to manual shifting
– Push the selector lever to the right out of position D. After switching over, the
current engaged gear is indicated in the display.
Shifting up gears
– One-touch forward of the selector lever (in the Tiptronic position) ⇒ fig. 107 + - left. Shifting down gears
–
One-touch back of the selector lever (in the Tiptronic position) - .
It is possible to switch over to manual both when the car is stationary and also
when driving.
When you accelerate, the gearbox shifts up automatically into the higher gear just
before the maximum permissible engine speed is reached.
If you select a lower gear, the automatic gearbox does not shift down until there
is no risk of the engine overrevving.
When you operate the kickdown feature, the gearbox shifts into a lower gear in
line with the vehicle speed and engine speed.
Emergency programme An emergency programme exists in the event of a fault in the sys-
tem.
The gearbox operates in a corresponding emergency programme if there are func-
tional faults in the gearbox electronics. This is indicated by all of the segments in
the display lighting up or going out.
A functional fault can have the following effect:
● The gearbox only shifts into certain gears.
● The reverse gear R cannot be used.
● The manual shift programme (Tiptronic) is switched off in the emergency
mode.
If the gearbox has switched over to emergency mode, drive to the nearest spe-
cialist garage in order to have the fault rectified. 115
Automatic gearbox DSG Using the system Safety Driving Tips General Maintenance Breakdown assistance Technical data
It is also possible under certain special accident situations that the front as well as
the side airbags and head airbags are deployed simultaneously.
The airbags are not deployed in the case of minor frontal and side collisions, rear-
end collisions, tilting of the vehicle, and vehicle rollover.
Deployment factors
It is not possible to state globally which deployment conditions apply to the airbag
system in every situation as the circumstances which exist in the case of acci-
dents vary greatly. An important role in this case, for example, is played by factors
such as the type of object against which the vehicle impacts (hard, soft), the angle
of impact, the vehicle speed etc.
A decisive factor for the deployment of the airbags is the deceleration which oc-
curs during a collision. The control unit analyses the nature of the collision and ac-
tivates the relevant restraint system. If the vehicle deceleration which occurs and
is measured during the collision remains below the prescribed reference values
specified in the control unit, the airbags are not deployed although the vehicle
may well suffer severe damage to the bodywork as a consequence of the acci-
dent.
The airbags are not deployed if:
● ignition is switched off;
● a minor frontal collision;
● a minor side collision;
● a rear-end collision;
● Rollover of the vehicle. Note
● A grey white or red, non-harmful gas is released when the airbag is inflated.
This is perfectly normal and is not an indication of a fire in the vehicle.
● In the event of an accident in which the airbags are deployed:
– the interior lighting comes on (if the switch for the interior light is in the
door contact position),
– the hazard warning light is switched on;
– all the doors are unlocked;
– the fuel supply to the engine is interrupted. Front airbags
Description of the front airbags The airbag system is not a substitute for the seat belt!
Fig. 121 Driver airbag in the steering wheel/front passenger airbag in the dash panel
The front airbag for the driver is housed in the steering wheel
⇒
fig. 121 - left. The
front airbag for the front passenger is housed in the dash panel above the storage
compartment ⇒ fig. 121 - right. The installation positions are each marked with the
“AIRBAG” logo.
The front airbag system, in combination with three-point safety belts, offers addi-
tional protection for the head and chest area of the driver and front passenger in
the event of a frontal collision of major severity ⇒ page 139.
The airbag is not a substitute for the seat belt, but is part of the complete passive
vehicle safety concept. Please note that an airbag can only offer you optimal pro-
tection in combination with a seat belt which is fastened .
Apart from their normal protective function, a further task of the seat belts is to
also hold the driver and front passenger in a correct seated position in the event
of a frontal collision so as to enable the front airbags to offer the maximum pro-
tection.
You should therefore always fasten the seat belts, not only because this is re-
quired by law, but also for safety reasons and for your own protection ⇒ page 132,
Why seat belts?. Note
The dash panel must be replaced after the front passenger airbag has been de-
ployed. 138
Airbag system
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
Intelligent technology Using the system Safety Driving Tips General Maintenance Breakdown assistance Technical data
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