Problems starting the engineFig. 144
Starting the engine - press the
button with the key
Read and observe and on page 122 first.
The key in the vehicle cannot be verified
If the key in the vehicle cannot be verified, then engine cannot be started by pressing a button.
One of the following message is shown in the information cluster display.
Key not detected. Owner's Manual!Key not found.NO KEY
The reasons for this may be:
▶ The battery in the key is almost out of charge.
▶ The key is malfunctioning
▶ There is interference in the signal between the system and the key (strong
electromagnetic field).
Try to start the engine by pressing the button with the key » Fig. 144.
System fault
If the following message appears on the display of the instrument cluster,
there is a system malfunction.
Keyless access system faulty.KEYLESS ACCESS SYSTEM FAULTY
Try to start the engine by pressing the button with the key » Fig. 144.
CAUTION
The key can only be verified if it is in the vehicle. It is therefore not always nec-
essary to know where the key is.Note■ When attempting to start, the key bit must be pointed towards the button
» Fig. 144 .■
If the engine fails to start after pressing the button with the key, seek spe-
cialist help.
START-STOPsystem
Introduction
This chapter contains information on the following subjects:
Operation
125
Manually deactivating/activating the system
126
Information messages
126
The START STOP system (hereinafter referred to as the system) reduces CO 2
emissions and harmful emissions, and saves fuel.
If the system determine that the engine is not needed when the vehicle stops
or is at a standstill (e.g. at the traffic lights), it turns off the engine and starts it
again when moving off.
The system function depends on many factors. Some of them are down to the
driver, the others are systemic and can neither be influenced nor identified.
Therefore the system may react differently in situations which seem identi-
cal from the driver's perspective.
The system is automatically activated every time the ignition is switched on
(even where this has previously been manually deactivated with the button ).
Note
If the engine has stopped due to the system, the ignition remains on.124Driving
Manually deactivating/activating the systemFig. 146
Button for the START-STOP sys-
tem
Deactivating/activating
›
Press the symbol button
» Fig. 146 .
When system is deactivated, the warning light in the button illuminates.
If the system is turned off, it will be automatically reactivated after turning the
ignition off and on.
Note
■ If the system is deactivated when the engine is turned off automatically,
then the automatic start process takes place.■
Selecting the driving mode Eco when the system is deactivated will automat-
ically activate the system » page 157, Selection of the driving mode (Driving
Mode Selection) .
Information messages
The information messages are shown in the instrument cluster display.
Start the engine manually!START MANUALLY
If for example the driver's seat belt is stored, the engine must be started man-
ually.
On vehicles with the starter button, the ignition is turned off by the first press
of the starter button; the start process is only initiated when the button is
pressed for the second time.
Error: start-stop systemSTART STOP ERROR
A system error is present. Seek help from a specialist garage.
Brakes and parking
Introduction
This chapter contains information on the following subjects:
Information on braking
126
Handbrake
127
Parking
128WARNING■ Greater physical effort for braking is required when the engine is switch-
ed off – risk of accident!■
During the braking procedure on a vehicle with manual transmission,
when the vehicle is in gear and at low revs, press the clutch pedal. Other-
wise, the functionality of the brake system may be impaired – risk of acci-
dent!
■
When leaving the vehicle never leave persons leave unattended in the
vehicle who could release the brake. The vehicle might then move off – risk of accident!
■
Observe the recommendations on the new brake pads » page 132.
CAUTION
Never let the brakes slip with light pressure on the pedal if braking is not nec-
essary. This causes the brakes to overheat and can also result in a longer brak-
ing distance and excessive wear.
Information on braking
Read and observe
and on page 126 first.
Wear-and-tear
The wear of the brake pads is dependent on the operating conditions and driv-
ing style.
The brake pads wear more quickly if a lot of journeys are completed in towns
and over short distances or if a very sporty style of driving is adopted.
If operated under severe conditions , the thickness of the brake pads must be
checked by a specialist garage between service appointments as well.
126Driving
Wet roads or road salt
The performance of the brakes can be delayed as the brake discs and brake
pads may be moist or have a coating of ice or layer of salt on them in winter.
The brakes are cleaned and dried by applying the brakes several times »
.
Corrosion
Corrosion on the brake discs and dirt on the bake pads occur if the vehicle has
been parked for a long period and if you do not make much use of the braking
system. The brakes are cleaned by applying the brakes several times »
.
Long or steep slopes
Before travelling a long distance with a steep gradient, reduce speed and shift
into the next lowest gear. As a result, the braking effect of the engine will be
used, reducing the load on the brakes. Any additional braking should be com-
pleted intermittently, not continuously.
Emergency brake display
If the brakes are applied in full and the vehicle systems evaluate the situation
as dangerous for the traffic following behind, the brake light flashes automati-
cally.
After the speed was reduced below around 10 km/h or the vehicle was stop-
ped, the brake light stops flashing and the hazard warning light system
switches on. The hazard warning light system is switched off automatically af-
ter accelerating or driving off again.
Faults in the brake surface
If it is found that the braking distance has suddenly become longer and that
the brake pedal can be depressed further, the brake system may be faulty.
Visit a specialist garage immediately and adjust your style of driving appropri-
ately, as you will not know the exact extent of the damage.
Low brake fluid level
An insufficient level of brake fluid may result in problems in the brake system.
The level of the brake fluid is monitored electronically » page 32,
Brake sys-
tem .
Brake booster
The brake booster increases the pressure generated with the brake pedal. The
brake booster only operates when the engine is running.
WARNINGOnly apply the brakes for the purpose of drying and cleaning the brake
discs if the traffic conditions permit this. Do not place any other road users
in jeopardy.
Handbrake
Fig. 147
Handbrake
Read and observe and on page 126 first.
The hand brake is used when stopping and parking for securing the vehicle
against unwanted movement.
Apply
›
Pull the handbrake lever firmly upwards.
Release
›
Pull the handbrake lever up slightly and at the same time push in the lock
button » Fig. 147 .
›
Move the lever right down while pressing the lock button.
The handbrake warning light
lights up when the handbrake is applied, pro-
vided the ignition is on.
A warning signal sounds if the vehicle is inadvertently driven off with the
handbrake applied.
The following message is shown in the information cluster display.
Release the handbrake!RELEASE HANDBRAKE
The handbrake warning is activated if the vehicle is driven at a speed of more
than around 5 km/h for more than 3 seconds.
127Starting-off and Driving
The gearshift indicator must be observed when changing gear » page 41.
Switching to manual shifting›
Push the gear selector from position D/S towards the right, or left in a right-
hand drive vehicle.
When switching to the manual shifting while driving, the current gear is main-
tained.
Shifting up gears
›
Push the selector lever forwards
+
» Fig. 151 .
›
Pull the paddle +
» Fig. 151 briefly towards the steering wheel.
Shifting down gears
›
Push the selector lever backwards
-
» Fig. 151 .
›
Pull the paddle -
» Fig. 151 briefly towards the steering wheel.
Temporarily switching to manual shifting in position D/S
›
Pull one of the -/+ paddles
» Fig. 151 briefly towards the steering wheel .
If you do not pull one of the rocker switches -
/+ for more than 1 Minute, man-
ual shifting of gears is deactivated. The temporary switch to manual gear shift-
ing can also be deactivated by pulling the +
paddle towards the steering
wheel for more than 1 second.
Note
■ It may be beneficial, for example, when travelling downhill, to use manual
shifting of gears. Shifting to a lower gear reduces the load on the brakes and
hence the wear of the brakes » page 126.■
When accelerating, the gearbox automatically shifts up into the higher gear
just before the maximum permissible engine speed is reached.
■
If a lower gear is selected, the gearbox does not shift down until there is no
risk of the engine overrevving.
Starting-off and driving
Read and observe
and on page 129 first.
Starting off
›
Start the engine.
›
Firmly depress and hold the brake pedal.
›
Press the lock button in the direction of
1
» Fig. 150 on page 130 and hold.
›Move the selector lever into the desired position
» page 129 and then release
the lock button.›
Release the brake pedal and accelerate.
Stopping (while the car is moving)
›
Depress the brake pedal and bring the vehicle to a stop.
›
Keep holding the brake pedal until driving is resumed.
The selector lever position N does not have to be selected when stopping for a
short time, such as at a cross roads.
Kickdown
The kickdown function allows you to achieve the maximum acceleration of
your vehicle while driving.
When the accelerator pedal is fully depressed, the kickdown function is activa-
ted in any forward driving mode.
The gearbox shifts down one or more gears depending on the vehicle speed
and engine speed, and the vehicle accelerates.
The gearbox does not shift up into the highest gear until the engine has
reached its maximum revolutions for this gear range.
Driving in neutral position in mode E (free-wheel)
›
Move the selector lever into the position D/S.
›
Select the driving mode Eco or Individual (Drive - Eco) » page 157, Selection
of the driving mode (Driving Mode Selection) .
›
Remove your foot from the accelerator pedal (the speed is higher than 20
km/h).
The vehicle moves without the braking effect of the engine.
The gear is selected again automatically, when you briefly depress the acceler- ator brake pedal or pull the left rocker switch -
towards the steering wheel
» page 130 , Manual shifting of gears (Tiptronic) .
This function is not available when towing a trailer or when another accessory
is connected to the trailer socket.
Launch control 1)
The launch control function allows the vehicle in mode S or Tiptronic to reach
its maximum acceleration when starting off.
›
Disable the TCS » page 135, Braking and stabilisation systems .
1)
This function is only valid for some engines.
131Starting-off and Driving
Parking space searchFig. 164
System button / display
Read and observe
and on page 145 first.
The system is able to find a parking space in a number of parallel and trans- verse parked vehicles on the passenger's or driver's side.
Search for a parking space parallel to the roadway
›
Slowly drive past a row of parallel parked vehicles.
›
Press the symbol button once
» Fig. 164 -
.
The display shows the following » Fig. 164 -
.
Search for a parking space traverse to the roadway
›
Slowly drive past a row of traverse parked vehicles.
›
Press the symbol button twice
» Fig. 164 -
.
The display shows the following » Fig. 164 -
.
Change sides for the parking
The system will automatically search for a parking space on the passenger
side.
Activate the turn signal on the driver's side if you wish to look fro a parking
space on this side of the road. The display changes and the system searches
for a parking space on the driver's side.
Note
If the symbol (km / h) is shown in the display while you are looking for a
parking space, the vehicle speed should be reduced below 40 km/h (parallel
parking) or below 20 km/h (transverse parking).ParkingFig. 165
Display
Read and observe
and on page 145 first.
The system supports the driver when reverse parking in the parking space
found in a number of traverse and parallel parked vehicles.
Display » Fig. 165
Parking place recognised with the information to drive on.
Parking space recognised with the information to reverse.
Note to drive on to the parking space.
Note to reverse to the parking space.
Parking manoeuvre
If the system finds a parking space, then this parking space is displayed
» Fig. 165 -
.
›
Continue driving forwards until the display appears
» Fig. 165 -
.
›
Stop and ensure that the vehicle does not continue to move forward until
the parking procedure starts.
›
Select reverse gear or move the selector lever into position R.
›
As soon as the following message is shown in the display:
Steering int. active.Check area around veh.!
, let go of the steering wheel. The steering will be taken
over by the system.
›
Observe the direct vicinity of the vehicle and reverse carefully.
If necessary, the parking procedure can be continued with further steps.
›
If the arrow in the display is flashing to the front » Fig. 165
, engage
1st gear or move the selector lever into the position D.
The display shows the icon (brake pedal).
146Driving
Operation OverviewFig. 171
Operating lever
Read and observe
on page 150 first.
Overview of ACC functions operated with the lever » Fig. 1711Activate ACC (control deactivated)2Start control (resume) / increase speed by 1 km/h at a time
(sprung position)3Interrupt control (sprung position)4Deactivate ACC5 Increase speed by 10 km/h at a time6 Decrease speed by 10 km/h at a timeA Set proximity levelBStart control (adopt current speed) / Reduce speed by 1 km/h at
a time
Note
If the lever is set » Fig. 171 from the position directly into the sprung posi-
tion, the current speed is stored and the control process is started.
Start control
Read and observe
on page 150 first.
Basic requirements for start of control ACC is enabled.
TCS is enabled » page 135, Braking and stabilisation systems .
On vehicles with a manual transmission , the second gear or higher must
be engaged.
On vehicles with an automatic transmission , the selector lever must be in
the D/S position or in the Tiptronic position.
On vehicles with a manual transmission , the current speed must be higher
than approx. 25 km/h.
On vehicles with a automatic transmission , the current speed must be
higher than approx. 2 km/h.
The control be started with the key
or by adjusting the lever
» Fig. 171
on page 152 into the sprung position.
Button ›
Press press.
The ACC will adopt the current speed and execute control.
Lever position
›
Set the lever into the sprung position set.
The ACC will adopt the current speed and execute control. Should the speed be stored already, the ACC adopts this speed and executes control.
The warning light illuminates in the instrument cluster when the regulation
is switched on.
Note
■ If control is started at a speed of less than 30 km/h on vehicles with an auto-
matic transmission, the speed of 30 km/h is stored. The speed increases auto-
matically to 30 km/h or is regulated with respect to the speed of the vehicle
ahead.■
When TCS is disabled, it will be activated automatically upon starting control.
■
If the TCS is deactivated during control, control is stopped automatically.
Stop/resume control
Read and observe
on page 150 first.
Stop control
›
Set the lever into the sprung position
» Fig. 171 on page 152 set.
Or
›
Apply the brake.
Control stops, the speed remains stored.
152Driving
Resume control›Start control » page 152.WARNINGControl may only be resumed if the stored speed is not too high for the cur-
rent traffic conditions.
Note
Regulation is also stopped when the clutch is held down for longer than 30 s.
Set/change the desired speed
Read and observe
on page 150 first.
The desired speed can be set or changed using the control lever » Fig. 171 on
page 152 .
The set speed is stored upon releasing the lever or the button on the button
on the lever.
Setting/changing the speed by 10 km/h at a time (
) - requirements
ACC is enabled.
Increasing the speed by 1 km/h at a time (
) - requirements
ACC is enabled.
Vehicle control is taking place.
Decreasing the speed by 1 km/h at a time (
) - requirements
ACC is enabled.
Vehicle control is taking place.
Changing the speed by adopting the current speed (
) - requirements
ACC is enabled.
The vehicle is moving at a speed other than that which is stored.
Note■
If during control the speed is increased by pressing the accelerator, control is
temporarily stopped. Upon releasing the accelerator, control is automatically
resumed.■
If during control the speed is reduced by applying the brake, control is stop-
ped. Control needs to be restarted in order to resume » page 152.
■
If the vehicle is controlled by a lower speed than the stored speed, then
the current speed is stored the first time the key is pressed. Press the key
again
and the speed is reduced in increments of 1 km/h.
Set the clearance level
Read and observe
on page 150 first.
The proximity to the vehicle ahead can be set with the lever » Fig. 171 on
page 152 or in the Infotainment » Owner´s Manual Infotainment , chapter CAR -
vehicle settings .
Setting by means of the lever
›
Set the switch Adjust in the spring-tensioned position or -» Fig. 171
on page 152 .
The display of the instrument cluster shows line
2
» Fig. 169 on page 150 ,
which indicates the proximity.
›
Using the switch Adjust the line
2
to the desired distance level on
the lever.
Note
■ If the proximity is changed in infotainment, the change will only come into
effect after a subsequent activation of the ACC.■
The proximity is dependent on the speed. The higher the speed, the greater
the proximity to the vehicle ahead.
■
On wet roads, a longer time interval to the vehicle ahead should always be
selected than on dry roads.
153Assist systems
Preheating fuel
The vehicle is fitted with a fuel filter preheating system. This secures opera-
tion of a vehicle using diesel fuel down to an environmental temperature of
-24 °C.
Diesel fuel additives
The diesel fuel in accordance with the prescribed standards meets all the con-
ditions for a smooth running engine. We therefore recommend that no diesel
fuel additives are used. This can result in considerable damage to parts of the
engine or the exhaust system.
CAUTION
■ Just filling the tank once with diesel fuel that does not comply with the
standard, can cause severe damage to parts of the engine, the fuel and ex-
haust system.■
If a different fuel other than diesel fuel, which complies to the above men-
tioned standards (e.g. petrol) is used, do not start the engine or switch on the
ignition! Extensive damage to engine parts can occur.
■
Water which has collected in the fuel filter can cause engine faults.
CAUTION
■ The vehicle cannot be operated with bio fuel RME, therefore this fuel must
not be filled in the tank and used for driving the vehicle. The use of biofuel
RME can cause considerable damage to parts of the engine or fuel system.■
Do not mix any fuel additives, so-called “flow improvers” (petrol and similar
agents) into the diesel. This can result in considerable damage to parts of the
engine or the exhaust system.
Refuelling with CNG (compressed natural gas)
Fig. 201
Natural gas filler tubes
Read and observe and on page 189 first.
Natural gas refuelling can be carried out if the following conditions are met.
The vehicle is unlocked.
The engine and the ignition are switched off.
The auxiliary heating and ventilation is switched off » page 118.
The gas filler tube for refuelling with natural gas is located behind the fuel fill-
er flap next to the petrol filler tube.
The filling couplings of the natural gas refuelling systems may differ in han-
dling. When refuelling with natural gas at unfamiliar refuelling systems, you
should seek help from trained fuel station staff. If unsure, have the refuelling
done by trained fuel station staff.
Open fuel filler flap
›
Open the fuel filler flap.
›
Remove cap
A
» Fig. 201 from gas filler tube
B
in direction of the arrow.
›
Plug the filling coupling of the refuelling system on the gas filler tube
B
.
The fuel tank is full when the compressor of the refuelling system automati-
cally switches off. To stop the refuelling operation prematurely, press the
“Stop ” button of the refuelling system.
Closing the filler cap
›
Check that sealing ring
C
» Fig. 201 has remained inserted in the gas filler
tube.
If sealing ring
C
has slipped onto the filling coupling, reinsert it into the gas
filler tube.
›
Plug the cap
A
onto the gas filler tube.
›
Close the bonnet.
The natural gas refuelling systems have an overfill protection relating to the
outdoor temperature. At very high outside temperatures, it may happen that
the gas tank may not be fully refuelled.
The natural gas system of your vehicle is suitable both for “slow fuelling” (fuel-
ling from small compressors) and for “quick fuelling” (fuelling from natural gas
stations with large compressors).
If the vehicle is parked for a longer period of time immediately after refuelling,
the situation may arise in which the pointer of the fuel tank gauge does not
indicate exactly the same level as was the case immediately after refuelling
192General Maintenance