Note■The engine running noises may be louder at first for a short time after start-
ing the cold engine.■
You should not switch on any major electrical components during the heat-
ing period, otherwise the vehicle battery will be drained unnecessarily.
■
After switching off the ignition, the radiator fan may intermittently continue
to run for approx. 10 minutes (also continuously).
Problems with the engine start - vehicles with starter button
Fig. 252
Engine start - hold key on button
Read and observe and on page 199 first.
If no engine start is possible and the display of the instrument cluster shows a message that the key could not be detected by the system or there is a system
fault, then try to start the engine as follows.
›
Push the starter button and then hold the key with the back of it on the but-
ton » Fig. 252 .
If the engine does not start, the help of a specialist garage is required.
CAUTION
The key may not be detected by the system if the battery in the key is running
out of charge or the signal fails (strong electromagnetic field) or is shielded
(e.g. in an aluminium case).START-STOPsystem
Introduction
This chapter contains information on the following subjects:
Operation
201
Manually disable / enable system
202
The START-STOPsystem (hereinafter referred to as the system) reduces
CO 2emissions 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, while others are systemic and can neither be influenced nor identified.
For this reason, the system may react differently in situations which seem
identical from the driver's perspective.
The system is automatically activated every time the ignition is switched on
(even when it has previously been manually deactivated with the button).
Note
If the engine has stopped due to the system, the ignition remains switched on.
Operation
Fig. 253
Display
Vehicles with manual transmission
The engine is automatically switched off as soon as the vehicle comes to a
halt, the shift lever is moved into neutral and the clutch pedal is released.
The engine is automatically started as soon as the clutch pedal is depressed.
201Starting-off and Driving
Vehicles with automatic transmission
The engine is automatically switched off as soon as the vehicle comes to a
halt and the brake pedal is operated.
The engine is automatically started as soon as the accelerator pedal is de-
pressed or the brake pedal is released (with deactivated Auto Hold function).
Requirements for the system to function correctly
The following conditions must be met for the system to function correctly.
The driver's door is closed.
The driver has fastened the seat belt.
The driving speed was higher than 4 km/h after the last stop.
System status
The system status is shown in the display when the vehicle comes to a halt
» Fig. 253 .
The engine is switched off automatically; when moving off, the ignition
process will be initiated automatically.
The engine is not switched off automatically.
When stopping, the engine will not switch off for the following reasons,
among others. ▶ The engine temperature for the proper function of the system has not yet
been reached.
▶ The charge state of the vehicle battery is too low.
▶ The current consumption is too high.
▶ High air conditioning or heating output (high blower speed, big difference be-
tween the desired and actual interior temperature).
If the engine is shut down automatically and the system detects that the en- gine is required, such as when the brake pedal is pressed repeatedly, then the
system automatically starts the engine.
More information about the current system status can be displayed on the In-
fotainment screen in the menu
→
→
veh. status
.
If there is a system fault , the following message will appear in the display of
the instrument cluster. Seek help from a specialist garage.
Note■ If the driver's seat belt is removed for more than approx. 30 seconds or the
driver's door is opened during automatic stop mode, the engine will have to be
started manually.■
No automatic engine shut-down takes place when a vehicle with automatic
transmission is moving at low speed (e.g. during a traffic jam) and remains sta-
tionary after pressing the brake pedal lightly. Automatic engine shut-down
takes place if you press the brake pedal down with more force.
■
For vehicles with automatic transmission there is no automatic engine shut-
down when the system detects a manoeuvring action due to a large steering
angle.
Manually disable / enable system
Fig. 254
Button for the START-STOP sys-
tem
›
To deactivate/activate the system, press the
button » Fig. 254 .
When the system is deactivated, the symbol
illuminates in the button.
If the system is deactivated, it will be reactivated automatically after the igni-
tion has been switched off and on.
Note
If the system is deactivated when the engine is turned off automatically, then
the automatic start process takes place.202Driving
Brakes and Parking
Introduction
This chapter contains information on the following subjects:
Electric parking brake
203
Auto Hold function
204
Parking
205
The wear of the brake pads is dependent on the operating conditions and driv-
ing style. Under difficult conditions (e.g. urban, sporty driving style) the condi-
tion of the brakes should also be checked by a specialist garage between the
service intervals.
The performance of the brakes can be delayed if the brakes are damp, iced up
in winter or if covered in a layer of salt . The brakes are cleaned and dried by
applying the brakes several times »
.
Corrosion on the brake discs and dirt on the brake 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 »
.
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. If you do have to brake, this should
be carried out at intervals.
Emergency braking display - when an emergency braking is performed, the
automatic flashing of the brake lights are used to alert the traffic behind.
New brake pads must first be “worn in” because these do not initially have the
best possible braking effect. Drive especially carefully for the first 200 km or
so.
A too low brake fluid level can cause faults in the braking system , the warn-
ing light illuminates in the instrument cluster
» page 35,
Brake system
. If
the warning light does not illuminate and an extended stopping distance is re-
quired, then driving should be adapted according to the unknown cause of
fault and restricted braking effect - seek the assistance of a specialist garage
immediately.
The brake booster increases the pressure generated with the brake pedal. The
brake booster only operates when the engine is running.
WARNING■ Greater physical effort is required for braking 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!
■
Do not press the brake pedal if braking is now required. This causes the
brakes to overheat and can also result in a longer braking distance and ex-
cessive wear - risk of accident!
■
Braking for the purpose of drying and cleaning the brake discs should be
carried out only if the traffic conditions permit. Do not place any other road
users in jeopardy.
■
Recommendations for new brake pads have to be observed.
■
When stopping and parking, the parking brake should always be on, oth-
erwise the vehicle could move off - there is the risk of an accident!
■
If a front spoiler, full wheel trim, etc. is mounted retrospectively, it must
be ensured that the air supply to the front wheel brakes is not reduced.
Otherwise, the functionality of the brake system may be impaired – risk of
accident!
Electric parking brake
Fig. 255
Parking brake button
203Starting-off and Driving
Fig. 256
Parking brake operation
Read and observe
on page 203 first.
The electric parking brake (hereinafter referred as a parking brake) replaces the handbrake. This secures the vehicle when stopping and parking against
unwanted movement.
The parking brake can be used when the ignition is on or off.
Switching on
›
Pull the button in the direction of arrow
1
» Fig. 256 and hold until the
symbol in the button and warning light illuminate in the instrument clus-
ter.
Automatic shut-off
The parking brake switches off automatically when starting, as long as the
driver's door is closed and the driver has fastened the seat belt.
Should the vehicle start to roll away when starting on a downhill slope, step on
the accelerator or switch on the parking brake.
Turning off the parking brake can be prevented if, before starting, the but-
ton is pulled and held in the direction of arrow
1
» Fig. 256 . The parking brake
turns off after releasing the button.
Manual shut-down
›
With the ignition switched on , press the brake pedal and at the same time
push the button in the direction of arrow
2
» Fig. 256 .
›
With the engine running , press either the brake or accelerator pedal and
press the button in the direction of arrow
2
.
The symbol in the button and the warning light
in the instrument cluster
go out.
Emergency braking function
If, while driving, a fault occurs in the brake system, the parking brake can be
used as an emergency brake »
.
›
Pull the
button in the direction of arrow
1
and » Fig. 256 hold (you hear
an audible signal), the vehicle starts to brake strongly.
The braking process is interrupted when the key is released or the accelerator
pedal is actuated.
WARNING■ The emergency brake is to be used only in an emergency when the vehi-
cle cannot be stopped with the brake pedal.■
Do not place any objects in the recessed grip for the finger in front of the
parking brake key - the parking brake button could be blocked!
Note
■ If the vehicle battery is discharged, it is not possible to release the parking
brake. First connect the vehicle first to a power source, such as the battery of
another vehicle » page 287, Jump-starting and then turn off the parking
brake.■
Noise when switching on and off the parking brake is normal and therefore
harmless.
Auto Hold function
Fig. 257
The Auto-Hold function button
Read and observe on page 203 first.
The Auto Hold function (hereinafter referred to only as system) prevents the
vehicle from rolling unintentionally when stopped. It is, for example, not nec-
essary to secure the vehicle with the brake pedal or parking brake at traffic
lights.
204Driving
For the activation, deactivation and correct functioning of the system, the
following basic conditions are required.
The driver's door is closed.
The engine is running (or has been switched off automatically by the
START-STOP system).
On vehicles with automatic transmission the selector lever is not in mode
N (in this mode, the system is not available).
Stopping and starting
When stopping the system prevents the vehicle from rolling away. The warn-
ing light
illuminates in the instrument cluster. The brake pedal can be re-
leased.
The vehicle's brakes are released at the moment of stating off. The warning
light in the instrument cluster goes out.
Should the vehicle start to roll away when starting on a downhill slope, step on
the accelerator or switch on the parking brake.
If the vehicle is secured by the system and the driver's door is opened or the ignition is turned off, the vehicle is secured by the parking brake to prevent
unwanted movement.
In this case, the indicator light turns off in the instrument cluster and the
warning light illuminates.
Activation/deactivation
The system is activated/deactivated by means of the
» Fig. 257 button.
When the system is activated, the symbol illuminates.
After switching off and switching on the ignition, the system remains either
activated or deactivated depending on the last setting.WARNINGThe increased stopping and starting comfort brought by the system must
not tempt you to take any safety risks.■
The system is not able to stop the vehicle under all circumstances, such
as on icy or otherwise slippery ground, or on gradients.
■
When stopping and parking always make sure that the vehicle is correctly
secured » page 205 , Parking .
CAUTION
In some washing systems it is necessary that the vehicle can roll freely. There-
fore, the system must be deactivated before driving through a car wash.NoteThe system is able to secure the vehicle for about 10 minutes, after which the
vehicle will be automatically secured by the parking brake.
Parking
Read and observe
on page 203 first.
When stopping and parking, look for a place with a suitable surface » .
Only carry out the activities while parking in the specified order.
›
Bring the vehicle to a stop and depress the brake pedal.
›
The parking brake switch.
›
On vehicles with automatic transmission place the selector lever in the P po-
sition.
›
Switch off the engine.
›
For vehicles with manual transmission , select 1st gear or reverse gear R .
›
Release the brake pedal.
If the parking brake is turned on while on a steep slope, the following message
may be displayed in the instrument cluster. Search for a car park with less of
an inclination.
WARNING■ The exhaust system components can become very hot. Therefore, never
stop the vehicle at places where the underside of your vehicle can come in-
to contact with flammable materials such as dry grass, undergrowth,
leaves, spilled fuel or such like. - Risk of fire and serious injury can occur!■
When leaving the vehicle, never leave people who could, for example,
lock the vehicle or release the brake, unattended in the vehicle - risk of ac-
cident and injury!
Manual gear changing and pedals
Introduction
This chapter contains information on the following subjects:
Manual gear changing
206
Pedals
206
205Starting-off and Driving
DriveGreen functionFig. 262
Display in Infotainment screen
The DriveGreen function (hereinafter referred to as DriveGreen) evaluates the
driving efficiency based on the information respecting the driving style.
DriveGreen can be displayed on the Infotainment screen in the
→
→
DriveGreen
menu.
A
driving liquid display
With the driving is fluid, the display is located in the middle (near the green
dot). When accelerating, the display moves down, and upwards when braking.
B
“Green leaf”
The greener the leaf, the more economic the driving style. With less economi-
cal driving, the leaf is presented without any green colouring or it can be com-
pletely hidden.
C
bar graph
The higher the green bars, the more economical the driving style. Each bar
shows the driving efficiency in 5-second steps, the current bar is on the left.
D
scoring (0 - 100)
The higher the indicated value, the more economical the driving style. When
you tap the function surface
D
, a detailed assessment showing the driving ef-
ficiency during the last 30 minutes is displayed.
If the trip lasts less than 30 minutes from the start, then the overview will add the assessment from the previous journey (the bars are shown in dark green).
E
the average fuel consumption from the start
When you tap the
E
function surface, a detailed overview of the average fuel
consumption during the last 30 minutes is shown.
If the trip lasts less than 30 minutes from the start, then the overview will add the overview of the average fuel consumption from the previous journey (the
bars are shown in dark green).F
symbols
The display may show the following four symbols, which give information on
the current driving style.
Economical driving style
The current speed has a negative effect on fuel consumption.
Travelling is not fluid, this is to avoid unnecessary acceleration and braking
Recommended gear
Tips for economical driving
Tap on the
B
leave to display tips for economical driving.
Note
Resetting the single-trip memory “Since start” also resets the average con-
sumption E and the driving assessment D as well as diagram C.
Radiator shutters
The radiator shutters located in front of the radiator (hereinafter: shutter) help
to reduce CO 2 emissions as well as harmful emissions and to save fuel.
If the system detects that it is possible to reduce the amount of air flowing to
the radiator, it closes the blinds. As a result, the air resistance of the vehicle is
reduced.
If, due to a function impairment of the shutters, a driving speed of 150 km/h is
reached, an appropriate message is shown in the display of the instrument
cluster.
After the display of the above message, the top speed of the vehicle is auto-
matically limited to around 170 km/h.
If this message appears in the winter, the cause may be ice or snow caught up
in the blinds. After the ice or snow has thawed, the blinds are functional again.
If the impairment not due to ice or snow, then assistance from a specialist
should be sought.
210Driving
Assist systems
General information
Introduction
This chapter contains information on the following subjects:
Radar sensor
212WARNING■ The assistance systems only serve to support the driver and do not re-
lieve the driver of the responsibility for driving the vehicle.■
The increased safety provision, as well as the increased occupant protec-
tion provided by the assistance systems must not tempt you to take risks -
risk of accident!
■
Adjust the speed and driving style to the current visibility, weather, road
and traffic conditions.
■
The assistance systems have physical and system-related limitations. For
this reason, the driver may experience some undesired or delayed system
responses in certain situations. You should therefore always be alert and
ready to intervene!
■
Only enable, disable or set the assistance systems when you have the car
fully under control, in every traffic situation - risk of accident!
Radar sensor
Fig. 264
Installation location of the radar
sensor
Read and observe on page 212 first.
The radar sensor (hereinafter referred to only sensor) uses electromagnetic
waves to capture the traffic situation ahead of the vehicle. The radar is located
under a cover » Fig. 264.
The sensor is part of the ACC » page 233 and Front Assist » page 237systems.
The sensor function may be impaired in the event of one of the following sit-
uations arising. ▶ The sensor cover is soiled (e.g. with mud, snow and the like).
▶ The area in front of and around the sensor cover is obscured (e.g. by labels,
auxiliary headlights and the like(.
▶ When visibility is poor (e.g. fog, heavy rain, thick snowfall).
▶ In exceptional cases, the sensor may be covered in the area beneath the cov-
er, e.g. due to snow.
If the sensor cover or the sensor is dirty or covered, a message to that effect
from the ACC system » page 237, Malfunctions or Front Assist » page 240, Mal-
functions system appears in the instrument cluster display.WARNING■
If you suspect that the sensor is damaged, deactivate the ACC system and
Front Assist system » page 235, » page 239 . Have the sensor checked by a
specialist garage.■
A collision or damage in the front or lower area of the vehicle could affect
the sensor function - there is risk of accident! Have the sensor checked by
a specialist garage.
■
Do not cover the area in front of and around the sensor cover. This can
lead to impaired function of the sensor - risk of accident!
CAUTION
Remove snow with a brush and ice with a solvent-free de-icer from the sensor
cover.
Braking and stabilisation systems
Introduction
This chapter contains information on the following subjects:
Stability Control (ESC)
213
ESC Sport
213
Anti-lock braking system (ABS)
213
Engine drag torque control (MSR)
213
Traction control (TCS)
214
Electronic Differential Lock (EDL and XDS)
214
Active steering assist (DSR)
214
212Driving
Brake Assist (HBA)214Hill Start Assist (HHC)214
Multicollision brake (MCB)
215
Trailer stabilisation system (TSA)
215
The brake and stabilization systems are automatically activated each time the
ignition is switched on, unless otherwise indicated.
The error display is in Chapter » page 33, Warning lights .
WARNINGThe general information relating to the use of assistance systems must be
observed » page 212, in section Introduction .
Stability Control (ESC)
Read and observe
on page 213 first.
ESC improves vehicle stability in critical driving situations (e.g. if the vehicle
starts to skid) by the braking the individual wheels to maintain the direction.
During an ECS intervention, the warning light flashes in the instrument clus-
ter.
ESC Sport
Fig. 265
ESC Sport / ASR system button
Read and observe on page 213 first.
ESC Sport allows for a sportier driving style. With ESC Sport switched on, in the
event of light oversteer or understeer of the vehicle, no ESC interventions take
place and the ASR is so limited that the drive wheels can spin.
Activation›Press and hold down the » Fig. 265 button.›
or: On Infotainment, press the button
→Tap on the function surface
→
ESC system:
→
ESC Sport
.
With activation the warning light
lights up in the instrument cluster and an
appropriate message is displayed in the instrument cluster.
Deactivation
›
Press the
» Fig. 265 button.
›
or: On Infotainment, press the button
→Tap on the function surface
→
ESC system:
→
Activated
.
With deactivation the warning light
extinguishes
in the instrument cluster
and an appropriate message is displayed in the instrument cluster.
Anti-lock braking system (ABS)
Read and observe
on page 213 first.
ABS prevents the wheels locking when braking. Thus helping the driver to
maintain control of the vehicle.
The intervention of the ABS is noticeable from the pulsating movements of
the brake pedal which is accompanied by noises.
When the ABS system is active, do not brake periodically or reduce the pres-
sure on the brake pedal.
Engine drag torque control (MSR)
Read and observe
on page 213 first.
The MSR prevents the blocking tendency of the drive wheels when shiftingdown or with an abrupt deceleration (e.g. on icy or otherwise slippery road sur-
faces).
If the drive wheels lock, the engine speed is automatically increased. This re-
duces the braking effect of the engine, and the wheels can rotate freely again.
213Assist systems