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
The selector lever is not locked when quickly moving across the position N
(e.g. from R to D/S ). This, for example, helps to rock out a vehicle that is stuck,
e.g. in a bank of snow. The selector lever lock will engage if the lever is in posi-
tion N for more than approx. 2 seconds without the brake pedal being de-
pressed.
If it is not possible to release the gear selector from mode P in the usual man-
ner, then this can be emergency unlocked » page 293.
Note
If you want to switch the selector lever from mode P to mode D/S or vice ver-
sa, move the selector lever quickly. This prevents that you accidentally select
mode R or N.
Manual shifting of gears (Tiptronic)
Fig. 261
Selector lever/multi function steering wheel
Read and observe
and on page 206 first.
Tiptronic mode makes it possible to manually shift gears with the selector lev-
er or multifunction steering wheel.
Switching to manual shifting using the selector lever
›
Push the gear selector from position D/S towards the right, or left in a right-
hand drive vehicle. The current gear is maintained.
Switching to manual shifting by using the rocker switches under the
multifunction steering wheel
›
To change gear , pull one of the rocker switches
-
/
+
briefly towards the
steering wheel » Fig. 261.
›
To cancel manual shift, pull the rocker switch
+
towards the steering wheel
for more than 1 s.
If you do not pull one of the rocker switches -/+ for more than 1 minute,
manual shifting of the gears is deactivated automatically.
Changing gear›
To shift up , tap the selector lever forwards
+
or pull the rocker switch
+
briefly towards the steering wheel » Fig. 261.
›
To shift down , tap the selector lever backwards
-
or pull the rocker switch
-
briefly towards the steering wheel » Fig. 261.
The currently selected gear is indicated in the » Fig. 259 on page 207 display.
The gear shift indicator should be observed when changing gear » page 44.
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
over revving.
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.
Start and run
Read and observe
and on page 206 first.
Starting and temporarily pausing
›
Firmly depress and hold the brake pedal.
›
Start the engine.
›
Press the locking button and move the selector lever to the desired position
» page 207 .
›
Release the brake pedal and accelerate.
The selector lever position N does not have to be selected if stopping for a
short time, such as at cross roads. However, you must apply the brake pedal in
order to prevent the vehicle from rolling away.
Accelerate to maximum speed during the journey (kickdown function)
The kickdown function is applied when the accelerator pedal is pressed down
in the forward mode.
The gear change is adjusted accordingly to reach the maximum acceleration.
208Driving
When approaching maximum speed (launch control function)1)
The launch control function is available in mode S or Tiptronic.›
Disable the TCS » page 212, Braking and stabilisation systems .
›
START STOP deactivate » page 202, Manually disable / enable system .
›
Fully depress and hold the brake pedal with your left foot.
›
Fully depress the accelerator pedal with your right foot.
›
Release the brake pedal - the vehicle is running at maximum acceleration.
Driving in neutral (“coasting”)
When releasing the accelerator pedal, the vehicle moves without the braking
effect of the engine.
Operating conditions
▶ The selector lever is in the D/S position.
▶ Driving mode Eco or Individual (Drive - Eco) is selected » page 240, Select the
driving mode (Driving Mode Selection) .
▶ The vehicle is travelling at more than 20 km/h.
▶ No trailer or other accessory is connected to the trailer socket.
The gear is selected again automatically, when you depress the accelerator or
brake pedal or pull the left rocker switch
-
towards the steering wheel
» page 208 , Manual shifting of gears (Tiptronic) .
WARNINGRapid acceleration, particularly on slippery roads, can lead to loss of control
of the vehicle – risk of accident!
Running in the engine and economical driving
Introduction
This chapter contains information on the following subjects:
Running in the engine
209
Tips for economical driving
209
DriveGreen function
210
Radiator shutters
210Running in the engine
During the first 1,500 km, the driving manner determines the quality of the
running in process on a new engine.
During the first 1,000 km , the engine should not be charged with more than
3/4 of the maximum permitted engine revs and without the trailer.
In the area of 1,000 to 1,500 kilometres , the engine load can be increased up
to the maximum permitted engine speed.
Tips for economical driving
The fuel consumption depends on the driving style, road condition, weather
conditions and the like.
For an economical driving style, the following instructions must be observed. ▶ Avoid unnecessary acceleration and braking.
▶ Observe the recommended gear » page 44.
▶ Avoid full throttle and high speeds.
▶ Reduce idling.
▶ Avoid short distances.
▶ Ensure the correct tyre inflation pressure is maintained » page 277.
▶ Avoid unnecessary ballast.
▶ Remove the roof rack when it is not needed.
▶ Only switch on electrical consumers (e.g. seat heating) for as long as they are
needed. In the Infotainment menu
→
→
conv. Consumers,
, up to three
consumers who currently have the largest share of fuel consumption, can be
displayed.
▶ Before switching on, ventilate the cooling system briefly and do not use the
cooling system with open windows.
▶ Do not leave windows open at high speed.
1)
This function is only valid for some engines.
209Starting-off and Driving
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
Traction control (TCS)Read and observe
on page 213 first.
The ASR prevents spinning of the drive wheels. TCS reduces the drive powertransmitted to the wheels in the case of slipping wheels. Thus, for example,
driving on road surfaces with low grip is made easier.
During a TCS intervention, the indicator light
flashes in the instrument clus-
ter.
Deactivation
›
Press the
» Fig. 265 on page 213 button.
›
or: On Infotainment, press the button
→Tap on the function surface
→
ESC system:
→
ASR off
.
With deactivation the warning light lights up in the instrument cluster
and
an appropriate message is displayed in the instrument cluster.
Activation
›
Press the
» Fig. 265 on page 213 button.
›
or: On Infotainment, press the button
→Tap on the function surface
→
ESC system:
→
Activated
.
With activation the warning light
is
extinguished and an appropriate mes-
sage is displayed in the instrument cluster.
The TCS should normally always be enabled. The system should be deactivated
only in the following situations, for example. ▶ When driving with snow chains.
▶ When driving in deep snow or on a very loose surface.
▶ When it is necessary to “rock” a car free when it has become stuck.
Electronic Differential Lock (EDL and XDS)
Read and observe
on page 213 first.
EDL prevents the turning of the respective wheel of the driven axle. EDL
brakes the spinning wheel, if necessary, and transmits the driving force to the
other driving wheel. Driving becomes easier on road surfaces with different
traction under each wheel of the driven axle.
EDL switches off automatically to avoid excessive heat generation on the
brake of the wheel being braked. Once the brakes have cooled down, there is
an automatic re-activation of EDL.
XDS is an extension to the electronic differential lock (EDL). XDS does not re-
spond to the relieved inner curve wheel of the driven axle in the case of fast
cornering.
By applying braking force to the relieved wheel, spinning is prevented by the
XDS. This has a positive effect on the driving stability and steerability of the
vehicle.
Active steering assist (DSR)
Read and observe
on page 213 first.
In critical situations, the DSR provides the driver with a steering recommenda-tion in order to stabilise the vehicle. DSR is activated, for example, on the right
and left vehicle side when braking sharply on different road surfaces.
Brake Assist (HBA)
Read and observe
on page 213 first.
The HBA increases the braking effect and helps to reduce the braking dis-
tance.
The HBA is activated by very quick operation of the brake pedal. In order to
achieve the shortest possible braking distance, the brake pedal must be ap-
plied firmly until the vehicle has come to a standstill.
The HBA function is automatically deactivated when the brake pedal is re-
leased.
Hill Start Assist (HHC)
Read and observe
on page 213 first.
When driving on slopes, HHC allows you to move your foot from the brake ped-al to the accelerator pedal without the vehicle rolling downhill on its own.
The vehicle is braked by the system for about 2 seconds after releasing the
brake pedal.
The HHC is active on gradients upwards of 5 % if the driver door is closed. HHC
is only ever active on slopes when in forward or reverse start off.
214Driving
Note■If with Version 3 vehicles not all fields around the vehicle silhouette are ac-
tive after activation the vehicle should be moved forwards or backwards.■
The signal tones for front obstacle recognition are factory-set to be higher
than for rear obstacle recognition.
■
The setting of the acoustic signals is stored (depending on the Infotainment
type) in the active user account personalisation » page 49.
Display in Infotainment screen
Fig. 268
Screen display
Read and observe and on page 215 first.
Function surfaces and warnings » Fig. 268ARoad display. Depending on the Infotainment type: Switching off park assistant dis-
play. Switching audible parking signals on/off.Change to rear-view camera display .There is an obstacle in the collision area (the distance to the obstacle
is less than 30 cm).
Stop moving in the direction of the obstacle!There is an obstacle in the road (the distance to the obstacle is great-
er than 30 cm).An obstacle is located outside of the road (the distance to the obsta-
cle is greater than 30 cm).System failure (there is no indication of obstacles).
Road display
The road display
A
» Fig. 268 indicates the road on which the vehicle would
take the current steering wheel and shift / selector lever position.
The shift lever is in the neutral position and the gear selector is in mode N. the
road display is at the front.
Activation / deactivation
Fig. 269
System key (option 2, 3)
Read and observe and on page 215 first.
Activation
The activation of the system is initiated when the reverse gear is engaged, or,
with vehicles with the variant 2 and 3 , also by pressing the
» Fig. 269 but-
ton.
When activating, an alarm sounds and the symbol illuminates in the button.
Deactivation
On vehicles with Version 1, the system can be deactivated by moving out of re-
verse gear.
For vehicles with version 2 and 3, the system is automatically deactivated by
pressing the button or at a speed above 15 km/h (the
symbol in the but-
ton goes out).
Fault display
Vehicles with Variant 1
▶ After system activation an acoustic signal sounds for approx. 3 seconds
(there is no obstacle near the vehicle).
Vehicles with the Variants 2 and 3
▶ After system activation, the symbol and
in the button flashes.
▶ In the display of the instrument cluster a message about an error of the
ParkPilot system appears (at the same time there is an audible signal).
Seek help from a specialist garage.
217Assist systems
Wizard for “Blind Spot”Monitoring - OperationRead and observe
and on page 219 first.
At a speed over 15 km/h, the area alongside and behind the vehicle is moni-
tored by the system. At the same time, the distance and the difference in
speed between your vehicle and the other vehicles in the monitored area can
be measured.
When driving, the sensors monitor an area to the left and right to the extent of
a normal lane width.
If a vehicle is detected in the “blind spot” area, the system indicates this vehi-
cle by the indicator light in the exterior mirror.
System constraint
The system is unable to recognise the specific lane width by means of sensors.
Therefore this can e.g. in the following cases respond to a vehicle in a further
lane.
▶ When driving on a road with narrow lanes or on the lane edge.
▶ Driving around a bend.
The system may also respond to objects on the roadside such as crash barriers,
noise barriers or similar objects.
Wizard for “Blind Spot”Monitoring - driving situations and
warnings
Fig. 273
Driving situation / indicator light in the left outside mirror indi-
cates the driving situation
Fig. 274
Driving situation / indicator light in the right outside mirror indi-
cates the driving situation
Read and observe
and on page 219 first.
In the following situations, the indicator light in the outside mirror indicates avehicle in the “blind spot”.
▶ You vehicle
B
is being overtaken by vehicle
A
» Fig. 273 .
▶ Your vehicle
C
overtakes the vehicle
D
at a greater speed of max. 10
km » Fig. 274 . If the speed during the overtaking is even higher, then there is
no warning by the warning light.
The warning display is always in the exterior mirror on the side of the vehicle where a vehicle is detected in the “blind spot”.
The greater the speed difference between the two vehicles, the earlier the
warning (by means of the warning light) regarding the vehicle that is overtak-
ing you takes place.
Two warning levels
light up - a vehicle has been detected in the “blind spot”.
flash - a vehicle has been detected in the “blind spot” and the turn signal is
switched on .
An advanced warning for vehicles with Lane Assist
flash also if the steering wheel is turned in the direction of the vehicle in
the “blind spot” . Therefore the Lane Assist » page 243 must be enabled and
the boundary line between the vehicles detected.
If in this case your vehicle indicates crossing the boundary line, with a short vi-
bration of the steering wheel.
220Driving
Function surfacesFig. 277
Function surfaces
Read and observe and on page 221 first.
It is possible to adjust the parking and manoeuvring mode by means of the
function surfaces.
Function surfaces » Fig. 277
Turns off the display of the area behind the vehicle
Mode - traverse parking
Mode - parallel parking
Mode - driving up to a trailer / distance monitoring
Mode - monitor the area behind the vehicle (wide view)
Screen settings - brightness, contrast, colour
Parking aid (mini display)
Enabling/disabling the mini display
Switch to full screen display
Orientation lines and roadway
Fig. 278
Orientation and lane lines
ABCDEFGRead and observe and on page 221 first.
In the modes for transverse and parallel parking guidance, orientation lines for
the assessment of distance and lane lines are displayed on the screen.
Screen display » Fig. 278
The distance is about 40 cm (safety distance limit).
The distance is about 100 cm.
The distance is about 200 cm.
The lane lines terminate approximately 300 cm behind the vehicle.
The distance may vary slightly depending on the load of the vehicle and the
road inclination.
The distance between the side lines corresponds approximately to the vehicle
width including mirrors.
Lane
The lane lines
D
» Fig. 278 change depending on the steering angle and indi-
cate the roadway on which the vehicle would take with the current steering
wheel position.
CAUTION
The objects shown on the screen can be closer or even further away than they
appear. This is especially the case in the following situations.■
Protruding objects, such as the rear of a truck and the like.
■
When driving from a horizontal surface into a slope or a depression.
■
When driving from a slope or a depression onto a horizontal surface.
ABCD223Assist systems