169
Driving
Driving SteeringIntroduction
The power steering is not hydraulic but electromechanical. The advantage
of this steering system is that it disposes of hydraulic tubes, hydraulic oil,
the pump, filter and other components. The electromechanical system
saves fuel. While a hydraulic system requires oil pressure to be maintained,
electromechanical steering only requires energy when the steering wheel is
turned.
With the power steering system, the assisted steering function automatical-
ly adjusts according to the vehicle speed, the steering torque and the wheel
turning angle. The power steering only works when the engine is running.
Additional information and warnings:
● Start and stop the engine ⇒ page 172
● Vehicle battery ⇒ page 292
● Tow-starting and towing away ⇒ page 344
WARNING
If the power steering is not working then the steering wheel is much
more difficult to turn and the vehicle more difficult to control.
● The power steering only works when the engine is running.
● Never allow the vehicle to move when the engine is switched off.
● Never remove the key from the ignition if the vehicle is in motion. The
steering may lock and it will not be possible to turn the steering wheel.
Control and warning lamps
lights upPossible causeSolution
(red)Power steering faulty.The steering system should be
checked by a Technical Service
as soon as possible.
(yel-
low)
Power steering operation re-
duced.
The steering system should be
checked by a qualified work-
shop as soon as possible.
If, after restarting the engine
and driving for a short distance,
the yellow warning light no lon-
ger comes on, it will not be nec-
essary to take the vehicle to a
specialised workshop.
The vehicle battery was dis-
connected and has been re-
connected.Drive for a short distance at 15 –
20 km/h.
Safety FirstOperating instructionsPractical tipsTechnical Specifications
170Driving
flashesPossible causeSolution
(red)Fault in the steering column
electronic lock. Do not drive on!
Seek professional advice.
(yel-
low)
Steering column deviation.Gently turn the steering wheel to
and fro.
Steering wheel not unlocked
or locked.
Remove the key from the igni-
tion and then switch the ignition
back on. Check the messages
displayed on the instrument
panel at the same time.
Do not drive on, if the steering
column remains locked after the
ignition has been switched on.
You should obtain professional
assistance.
Several warning and control lamps should light up for a few seconds when
the ignition is switched. This signals that the lamp is working properly. They
will switch off after a few seconds.
WARNING
If the warning lamps and messages are ignored, the vehicle may stall in
traffic, or may cause accidents and severe injuries.
● Never ignore the warning lamps or text messages.
● Stop the vehicle safely as soon as possible.
CAUTION
Failure to heed the warning lamps and text messages when they appear
may result in faults in the vehicle. Information on the steering
Steering column electronic lock
If the driver's door is opened before the ignition is switched off, the steering
column electronic lock is activated via the ignition key or the sensor built
into the door handle.
Mechanical steering lock
To prevent theft, we recommend you lock the steering before leaving the ve-
hicle.
Please engage steering lockUnlocking the steeringParking the vehicle
⇒ page 185.Turn the steering wheel slightly to
release the steering lock.
Remove the key from the ignition.Insert the key in the ignition lock.Turn the steering wheel slightly until
you hear the steering lock.Hold the steering wheel in this posi-
tion and switch on the ignition.
Electromechanical power steering
With the power steering system, the assisted steering function automatical-
ly adjusts according to the vehicle speed, the steering torque and the wheel
turning angle. The power steering only works when the engine is running.
You should remember that you will need considerably more power than nor-
mal to steer the vehicle if the power steering is not working correctly or not
at all.
Counter steering assistance system
The counter steering assistance system helps the driver in critical situa-
tions. Additional steering power helps the driver when counter steering.
175
Driving
WARNING
Cold start sprays could explode or cause a sudden increase in the engine
speed.
● Never use start boosters.
CAUTION
● An attempt to start the engine while driving or starting the engine imme-
diately after turning it off can cause damage to the engine or starter motor.
● When the engine is cold, avoid high revs and heavy acceleration and do
not make the engine work hard.
● Do not push or tow start the engine. Sunburnt fuel could damage the
catalytic converter.
For the sake of the environment
Do not warm the engine at idle speed; start driving immediately if the visi-
bility is OK. This helps the engine reach operating temperature faster and
reduces emissions.
Note
● For example, if the key battery is very worn or flat, the engine cannot be
started with the starter button. In this case, remove the ignition button from
the lock and insert the key.
● Electrical components with a high power consumption are switched off
temporarily when the engine starts.
● When the engine is started cold, there may be strong vibrations for a few
moments for technical reasons. This is quite normal, and no cause for con-
cern.
● At temperatures below +5 °C (+41 °F), smoke may be given off below the
vehicle when the additional heater is connected. Stopping the engine
Complete operations only in the sequence given:
Step 1.Stopping the vehicle completely
⇒ .
2.Press the brake pedal and keep pressed until step 4 has been
completed.
3.In automatic gearboxes, put the selector lever in position P.4.Connect the electronic parking brake ⇒ page 185.5.Turn the key in the ignition lock to position ⇒ fig. 128 0.6.With a manual gearbox, put the vehicle in first or reverse gear.
WARNING
Never switch off the engine while the vehicle is moving. You may lose
control of the vehicle and there is a risk of serious accident.
● The airbags and belt tensioners do not work when the ignition is
switched off.
● The brake servo does not work with the engine off. To stop, the brake
pedal must be pressed with more force.
● As the power steering does not work if the engine is not running, you
will need more strength to steer than normally.
● If the key is removed from the ignition, the steering may lock and it
will not be possible to steer the vehicle.
CAUTION
If the engine has been driven at high speed for a prolonged period of time,
it may overheat when turned off. To avoid engine damage, allow the engine
to run for approximately two minutes in neutral before switching it off.
Safety FirstOperating instructionsPractical tipsTechnical Specifications
183
Driving
● You should reduce speed accordingly.
● Press the selector lever from position D to the right into the Tiptronic se-
lector gate ⇒ page 182.
● Gently pull the selector lever back to change down a gear.
● ALTERNATIVELY: Reduce using the steering wheel paddles ⇒ page 182.
Emergency program
If all the selector lever positions on the instrument panel display are shown
with a light-coloured background, this means there is a fault in the system.
The automatic gearbox will operate in emergency programme mode. When
the emergency program is activated, it is possible to drive the vehicle how-
ever, at low speeds and within a selected range of gears.
For the DSG ®
dual clutch gearbox, in some cases, this may mean that the
reverse gear does not engage . The gearbox should be checked by a Techni-
cal Service as soon as possible.
Overload protection for the 6-speed DSG gearbox ®
When the clutch is overloaded, the vehicle begins to jerk and the selector
lever position indicator begins to flash. To prevent damage to the clutch,
this interrupts the power transmission between the engine and the gearbox.
There is no more traction and it is not possible to accelerate. If the clutch is
opened automatically due to overloading, press the brake pedal. Wait a few
seconds before starting to move again.
Kick-down
The kick-down system provides maximum acceleration when the gear selec-
tor lever is in the positions D, S or in the Tiptronic position.
When the accelerator pedal is pressed right down, the automatic gearbox
will shift down to a lower gear, depending on road speed and engine speed.
This takes advantage of the maximum acceleration of the vehicle ⇒
.
When the accelerator is pressed to the floor, the automatic gearbox shifts to
the next gear only after the engine reaches the specified maximum engine
speed. Launch-Control Programme
The Launch-Control programme enables maximum acceleration while at a
standstill.
●
Switch off the ASR ⇒ page 185.
● Press and hold the brake pedal with your left foot.
● Place the selector lever in position S or Tiptronic.
● Press the accelerator with the right foot until the vehicle reaches an en-
gine speed of approximately 3200 rpm.
● Lift the left foot off the brake ⇒
. The vehicle starts with maximum ac-
celeration.
● Turn on the ASR after accelerating!
WARNING
Rapid acceleration can cause loss of traction and skidding, especially on
slippery ground. This could cause loss of control of the vehicle resulting
in an accident and considerable damage.
● Only use kick-down and rapid acceleration when weather conditions,
surface conditions and traffic conditions permit; accelerate and drive in a
manner that does not endanger other road users.
● Please remember that the driven wheels can slip and the vehicle can
skid if the ASR is turned off, especially on slippery ground.
● Turn on the ASR after accelerating!
CAUTION
● If you stop on a hill with a gear ratio engaged, do not try to prevent the
vehicle from rolling back by pressing on the accelerator. This could cause
overheating and damage the automatic gearbox.
● Never allow the vehicle to move with the gear selector lever in N, espe-
cially with the engine turned off. The automatic gearbox will not be lubrica-
ted and could be damaged.
Safety FirstOperating instructionsPractical tipsTechnical Specifications
198Driving
Start-Stop Function*
Fig. 140 Detailed view of
the centre console: Start-
Stop function button.
In Start-Stop mode, the engine is automatically switched off when the vehi-
cle is at a standstill. The engine restarts automatically when required.
The function is enabled automatically whenever the ignition is switched on.
The instrument panel displays information on the current status.
Vehicles with a manual gearbox
● When the vehicle is at a standstill, leave it in neutral and take your foot
off the clutch. The engine switches off.
● Simply depress the clutch pedal to move off again.
Vehicles with an automatic gearbox
● When the vehicle is at a standstill, depress the brake or keep it pressed
down. The engine switches off.
● The engine will start again as soon as you release the brake pedal.
● With the gear lever set to P, the engine will not start until a range of
gears is selected or the accelerator pedal is depressed. Important conditions for the engine to automatically switch off
●
The driver seat belt must be buckled.
● The driver door must be closed.
● The bonnet must be closed.
● The factory-fitted towing bracket must not be electrically connected to a
trailer.
● A minimum engine temperature has been reached.
● The steering wheel must not be turned more than 270 degrees.
● The vehicle has moved since the last stop.
● In vehicles with Climatronic: The temperature inside the vehicle is within
the preset temperature range.
● The temperature set is neither very high nor very low.
● The air conditioning defrost function is not switched on.
● In vehicles with Climatronic: the blower has not been manually set to a
high speed.
● The power level of the vehicle's battery is sufficient.
● The vehicle's battery temperature is neither too high nor too low.
● The vehicle is not on a steep gradient or slope.
● The front wheels are not overly turned.
● The heated windscreen is not switched on.
● Reverse gear is not engaged.
● The park assist system is not switched on.
Conditions for automatically restarting the engine
The engine may automatically restart under the following conditions:
● If the vehicle interior is too hot or too cold.
● If the vehicle moves.
● If the vehicle's battery voltage drops.
Conditions requiring the key to restart the engine
The engine must be started using the key under the following conditions:
199
Driving
● If the driver unbuckles his/her seat belt.
● If the driver's door is opened.
● If the bonnet is opened.
● In vehicles with a manual gearbox: If a gear has been selected.
Switching Start-Stop mode on and off manually
● Press the
button on the centre console ⇒
fig. 140.
● The button will light up when the Start-Stop function is switched off.
The engine will start immediately if the vehicle is in Stop mode when it is
switched off manually.
WARNING
The brake servo and the power steering do not work when the engine is
switched off.
● Never allow the vehicle to move when the engine is switched off.
CAUTION
Using the Start-Stop function for a long period at very high outdoor temper-
atures could damage the vehicle's battery.
Note
● In some cases, you may have to restart the vehicle using the key. Ob-
serve the corresponding message on the instrument panel display.
● If the steering wheel is turned more than 270°, Stop will not function;
however, the angle of steering wheel turn does not affect starting the vehi-
cle.
Safety FirstOperating instructionsPractical tipsTechnical Specifications
270Checking and refilling levels
WARNING
Driving with insufficient fuel reserve could result in the vehicle breaking
down in traffic and a serious accident.
● If the fuel level is too low then the fuel supply to the engine can be-
come irregular especially on slopes.
● If the engine “is choked” or stalls due to lack of or irregularity of the
fuel supply, the power steering as well as all of the driver assistance sys-
tems including braking assistance will stop working.
● Always refuel when there is only one quarter of the fuel tank left to
avoid running out of fuel.
CAUTION
● Always pay attention to any lit lamps and to the corresponding descrip-
tions and instructions to avoid damage to the vehicle.
● Never run the tank completely dry. An irregular fuel supply may lead to
ignition faults and unburnt fuel could enter the exhaust system. This could
damage the catalytic converter filter or the diesel particulate filter!
Note
The arrow next to the fuel pump symbol on the instrument panel ⇒ fig. 164
indicates the side of the vehicle on which the tank flap is located. Filling the tank with petrol or diesel
Fig. 165 Open tank flap
with tank cap attached to
the holder.
Before refuelling, always turn off the engine, the ignition, mobile tele-
phones, auxiliary heating and keep them off during refuelling.
Unscrewing the tank cap
● The tank flap is at the rear of the vehicle on the right.
● Press the rear of the tank flap to open it.
● Unscrew the tank cap anti-clockwise and insert it in the hole in the tank
flap hinge ⇒ fig. 165.
Refilling
The correct petrol type for the vehicle is located on a sticker inside the fuel
tank flap ⇒ page 271.
● If the automatic filler nozzle is operated correctly, it will switch itself off
as soon as the tank is full ⇒
.
● Do not continue to refuel if it is turned off! Otherwise, this will fill the ex-
pansion chamber and fuel may leak out if the ambient conditions are warm.
344If and when
WARNING (Continued)
● Do not attach the negative cable to parts of the fuel system or to the
brake hose/pipe.
● The non-insulated parts of the battery clamps must not be allowed to
touch. Also, the cable connected to the positive pole of the battery
should never enter into contact with electrically conductive parts of the
vehicle.
● Check the magic eye on the battery; use a lamp if necessary. If it is
clear yellow or clear, do not start the vehicle: seek specialised technical
assistance.
● Avoid static electricity discharges in the area around the battery. In
the event of sparks, explosive gases coming from the battery could ig-
nite.
● Never use starting assistance if the vehicle battery is damaged, fro-
zen or has been frozen.
Towing and tow starting Introduction
When towing, always respect legal requirements.
For technical reasons, it is not possible to tow a vehicle if the battery is flat.
Additional information and warnings:
● Electronic power control and exhaust gases purification system
⇒ page 232
WARNING
A vehicle with a flat battery should never be towed.
● Never remove the key from the ignition lock. The electronic steering
lock could engage. Then the vehicle will be uncontrollable. You may lose
control of the vehicle and there is a risk of serious accident.
WARNING
When towing the vehicle, the handling and braking efficiency change
considerably. Please observe the following instructions to minimise the
risk of serious accidents and injury:
● As the driver of the vehicle being towed:
– The brake must be depressed must harder as the brake servo does
not operate. Always remain aware to avoid collision with the towing
vehicle.
– More strength is required at the steering wheel as the power steer-
ing does not operate when the engine is switched off.
● As the driver of the towing vehicle:
– Accelerate gently and carefully.
– Avoid sudden braking and manoeuvres.
– Brake well in advance than usual and brake gently.
CAUTION
● Carefully fit and remove the towing ring and its cover to avoid damage to
the vehicle (for example, paintwork).
● When towing, fuel could enter the catalytic converter and cause dam-
age!