Driving through waterFig. 131
Maximum permissible water lev-
el when driving through water
The following instructions must be observed if vehicle damage is to be avoided
when driving through water (e.g. flooded roads).
›
Therefore, always determine the depth of the water before driving through
water.
The water level must not reach above the web of the lower sill » Fig. 131.
›
Do not drive any faster than at a walking speed.
At a higher speed, a water wave can form in front of the vehicle, which can
cause water to penetrate into the engine's air intake system or other parts of
the vehicle.
›
Never stop in the water, do not reverse and do not switch the engine off.
CAUTION
■ Should water penetrate into the intake system of the engine, there is a risk
of serious damage to the engine parts!■
When driving through water, some vehicle parts such as chassis, electrics or
transmissions may be severely damaged.
■
Oncoming vehicles can generate water waves which can exceed the permis-
sible water level for your vehicle.
■
Potholes, mud or rocks can be hidden under the water, making it difficult or
impossible to drive through water.
■
Do not drive through salt water, as the salt can cause corrosion. A vehicle
coming into contact with salt water is to be thoroughly rinsed with fresh wa-
ter.
Assist systems
General information
Introduction
WARNINGThe following general instructions regarding the use of assistance systems
must be observed.■
The assistance systems only serve to support and do not relieve the driv-
er 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 so that you have the
car fully under control in every traffic situation - risk of accident!
Braking and stabilisation systems
Introduction
This chapter contains information on the following subjects:
Stability Control (ESC)
115
Anti-lock braking system (ABS)
115
Traction control (TCS)
115
Electronic differential lock (EDL and XDS)
116
Brake Assist (HBA)
116
Hill Start Assist (HHC)
116
Multi collision brake (MCB)
116
This chapter describes the functions of the brake and stabilization systems.
The error display is in Chapter » page 31, Warning lights .
114Driving
The brake and stabilization systems are automatically activated each time the
ignition is switched on, unless otherwise indicated.WARNINGThe general information relating to the use of assistance systems must be
observed » page 114, in section Introduction .
Stability Control (ESC)
Read and observe
on page 115 first.
The ESC improves vehicle stability in dynamic driving situations, such as whenthe vehicle starts to skid.
The ESC monitors whether the desired direction of the current vehicle motion
is occurring. In case of any deviation (e.g. oversteer), the ESC automatically
brakes individual wheels to maintain the desired direction.
During an intervention of the system, the warning light flashes in the instru-
ment cluster.
Anti-lock braking system (ABS)
Read and observe
on page 115 first.
ABS prevents the wheels locking when braking. Thereby, it helps 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 pump the brakes or lift off the brake
pedal.
Traction control (TCS)Fig. 132
System button: Activating/deac-
tivating TCS
Read and observe on page 115 first.
TCS prevents the spinning of the wheels of the driven axle. TCS reduces the drive power transmitted to the wheels in the case of slipping wheels. Thereby,
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.
Activating/deactivating TCS
The activation or deactivation of TCS can be done, depending on equipment, in
one of the following ways. ▶ Infotainment » Owner´s Manual Infotainment , chapter CAR - vehicle set-
tings .
▶ By briefly pressing the symbol key
» Fig. 132 .
Upon deactivation, in the instrument cluster the indicator light illuminates
and the display shows the following message.
Traction control (ASR) deactivated.ASR OFF
Upon activation, in the instrument cluster the indicator turns and the display
shows the following message.
Traction control (ASR) activated.ASR ON
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 “rocking a car free” when it has become stuck.
115Assist systems
Electronic differential lock (EDL and XDS)Read and observe
on page 115 first.
EDL
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
XDL is an extension to the electronic differential lock. XDL does not respond to
traction, but to the load relief of the inner front wheel of the driving axle dur-
ing fast cornering.
The automatic brake intervention on the brake of the wheel with reduced load
prevents the wheel from spinning. Thus, the traction is improved and the vehi-
cle can continue to follow the desired track.
Brake Assist (HBA)
Read and observe
on page 115 first.
HBA increases the braking effect and helps to shorten the braking distance.The HBA is activated by very rapid depression of the brake pedal. To achieve
the shortest possible braking distance, the brake pedal must be applied firmly
until the vehicle has come to a complete standstill.
HBA is automatically switched off when the brake pedal is released.
Hill Start Assist (HHC)
Read and observe
on page 115 first.
HHC allows you to move your foot from the brake pedal to the accelerator ped-al without having to use the handbrake when pulling away on a gradient.
The system holds the brake pressure produced by the activation of the brake
pedal for approx. 2 seconds after the brake pedal is released.
HHC is active on slopes of >5 % when the driver door is closed. HHC is always
only active on slopes pulling away forwards or in reverse.
Multi collision brake (MCB)
Read and observe
on page 115 first.
The MCB helps to decrease speed after a collision through automatic brakinginterventions and to stabilize the vehicle. This reduces the risk of a subse-
quent crash due to uncontrolled vehicle movement.
The automatic brake interventions can take place only if the following condi-
tions are met.
There was a front, side and rear-end collision of a certain severity.
The impact speed was higher than approx. 10 km/h.
The brakes, the ESL and other required electrical systems remain function-
al after impact.
The accelerator pedal is not actuated.
Parking assistance (ParkPilot)
Introduction
This chapter contains information on the following subjects:
Function
117
Display in the Infotainment display
118
Activation / deactivation
118
Automatic system activation when moving forward
119
The parking aid (hereinafter referred to as "system") draws attention to obsta-
cles in the vicinity of the vehicle via acoustic signals or on the Infotainment
display when manoeuvring.
WARNING■ The general information relating to the use of assistance systems must
be observed » page 114, in section Introduction .■
Moving persons or objects may not be recognised by the system sensors.
■
Under certain circumstances, surfaces of certain objects and types of
clothing cannot reflect the system signals. For this reason, such people or
objects may not be recognised by the system sensors.
116Driving
WARNING (Continued)■External noise sources may affect the signals of the system sensors. Un-
der adverse conditions, this may cause objects or people to be not recog-
nised by the system.■
Before reversing, you should make sure that there are no small obstacles,
such as rocks, thin posts, trailer drawbars etc. in front or behind your vehi-
cle. Such obstacles may not be recognised by the system sensors.
CAUTION
■ Keep the system sensors » Fig. 133 on page 117 clean, snow-and ice-free and
do not cover with any objects of any kind, otherwise the system functioning
may be impaired.■
Under adverse weather conditions (heavy rain, water vapour, very low or
high temperatures, etc.), the system function may be limited - “incorrect recog-
nition of obstacle”.
■
Accessories additionally installed on the vehicle rear, such as bicycle carriers,
can impair the system function.
Function
Fig. 133
Installation position of the sensors on the left side of the vehicle:
front/rear
Fig. 134
Sampled areas and range of the
sensors
Read and observe and on page 116 first.
The system uses ultrasound waves to calculate the distance between the
bumper and an obstacle. The ultrasonic sensors are, depending on vehicle
equipment,, located in the back or in the front bumper » Fig. 133.
Depending on the equipment, the following system versions can exist
» Fig. 134 .
▶ Version 1: warns of obstacles in the areas
C
,
D
.
▶ Version 2: warns of obstacles in the regions
A
,
B
,
C
,
D
.
Approximate range of sensors (in cm)
Area » Fig. 134Version 1
(3 sensors)Version 2
(7 sensors)A-120B-60C160160D6060
Audible signals
The interval between the acoustic signals becomes shorter as the clearance is
reduced. A continuous tone sounds from a distance of approx. 30 cm - danger
area. From this moment on do not continue driving!
The acoustic signals can be set in the Infotainment » Owner´s Manual Infotain-
ment , chapter CAR - Vehicle Settings .
Towing a trailer
When towing, or when another accessory is connected to the trailer socket on-
ly the areas
A
and
B
» Fig. 134 are active in the system.
117Assist systems
NoteThe signal tones for front obstacle recognition are factory-set to be higher
than for rear obstacle recognition.
Display in the Infotainment display
Fig. 135
Display
Read and observe and on page 116 first.
Function keys and obstacle warning » Fig. 135 Depending on the Infotainment type: Switching off park assistant dis-
play. Switching audible parking signals on/off.Message: Look! Safe to move?Colour of an object detected in the collision area (the distance to the
obstacle is less than 30 cm).
Stop driving in the direction of an ob-
stacle!Colour of an object detected in the manoeuvring area (the distance to
the obstacle is more than 30 cm).Colour of an object detected in the outside the manoeuvring area (the
distance to the obstacle is more than 30 cm).System failure (there is no indication of obstacles).Activation / deactivationFig. 136
System key (option 2)
Read and observe and on page 116 first.
Activation
The activation of the system is initiated when the reverse gear is engaged, or
vehicles with the Variant 2, also by pressing the symbol key
» Fig. 136
.
This is confirmed by a short acoustic signal (the symbol in the button lights
up).
Deactivation
On vehicles with Version 1, the system can be deactivated by moving out of re-
verse gear.
For vehicles with Version 2, the system is deactivated by pressing the symbol
button or automatically at a speed over 10 km/h (the symbol
in the but-
ton goes out).
Displaying an error
If a warning signal sounds for about 3 seconds after activating the system and
there is no obstacle close to your car, this indicates a system fault. The fault is
also indicated by the symbol flashing in the button. Seek help from a spe-
cialist garage.
Note
The system can only be activated with the symbol key at a speed of below
approx. 10 km / hr.118Driving
Automatic system activation when moving forwardFig. 137
Infotainment display: Display
with automatic activation
Read and observe and on page 116 first.
The automatic system activation occurs when moving forward at a speed be-
low 10 km / h when the vehicle approaches an obstacle.
After activation, the following is shown in the left pane of the Infotainment
display » Fig. 137 .
Acoustic signals are sounded as of a distance from the obstacle of around
50 cm.
The automatic display can be enabled or disabled in the Infotainment » Owner
´s Manual Infotainment , chapter CAR - vehicle settings .
Speed control system
Introduction
This chapter contains information on the following subjects:
Functioning
119
Operating Description
120
The Cruise Control System (CCS) maintains a set speed without you having to
actuate the accelerator pedal.
The status where the CCS maintains the speed is referred to hereinafter as the
control .
WARNING■
The general information relating to the use of assistance systems must
be observed » page 114, in section Introduction .■
After pressing the clutch pedal, no interrupted control occurs! For exam-
ple, if a different gear is engaged and the clutch pedal is released, control is
continued.
Functioning
Fig. 138
Maxi DOT display: Examples of status displays the CCS
Fig. 139
Segment display: Examples of status displays the CCS
Read and observe
on page 119 first.
CCS status displays » Fig. 138 , » Fig. 139
Speed set, but control is inactive.
Control is active.
No speed set.
System fault - seek assistance from a specialist garage immediately.
119Assist systems
Basic requirements for starting the controlThe CCS is activated.
On vehicles with a manual transmission , the second gear or higher is en-
gaged.
On vehicles with an automatic transmission , the selector lever is in the
D/S position or in the Tiptronic position.
The current speed is higher than approx. 20 km/h.
This is only possible within the range which is permitted by the power output
and braking power of the engine.WARNINGIf the engine power and engine braking effect is insufficient to maintain
the set speed, vehicle operation must be taken over!
Operating Description
Fig. 140
Cruise control system controls
Read and observe on page 119 first.
Overview of the control elements of the CCS » Fig. 140ADeactivate CCS (delete set speed) Interrupt control (sprung position) Activate CCS (control deactivated)BTake control again a)
/ Increase speedCStart control / reduce speedDSwitch between GRA and Speed Limiter » page 120a)
If no speed is set the current speed is adopted.
At the start of the regulation the GRA regulates the vehicle to the current
speed, and this speed is shown on the instrument cluster display. The warning
light
illuminates in the instrument cluster.
Automatic control interruption
Automatic control interruption occurs if any of the following conditions are
met.
▶ The brake pedal is operated.
▶ When one of the brake assist systems (e.g. ESC) intervenes.
▶ Through an airbag deployment.
▶ The key
is actuated.WARNING■
Always deactivate the cruise control system after use to prevent the sys-
tem being enabled unintentionally.■
Control may only be resumed if the set speed is not too high for the cur-
rent traffic conditions.
Note
■ During control, speed can be increased by pressing the accelerator pedal. Re-
leasing the accelerator pedal will cause the speed to drop again to the set
speed.■
By pressing the
button during the regulation this is cancelled and the
Speed Limiter is activated.
Speed limiter
Introduction
This chapter contains information on the following subjects:
Operation
121
Operation description
121
The Speed Limiter limits the maximum driving speed to the set speed limit.
This limit can only be exceeded by depressing the accelerator pedal fully.
The condition in which the Speed Limiter monitors a potential set speed limit
excess is referred to as Regulation.
120Driving
WARNINGThe general information relating to the use of assistance systems must be
observed » page 114, in section Introduction .
Operation
Fig. 141
Maxi DOT display: Examples of Speed Limiter status displays
Fig. 142
Segment display: Examples of Speed Limiter status displays
Read and observe
on page 121 first.
Status display of the Speed Limiter » Fig. 141, » Fig. 142
Speed limit set, but regulation is inactive.
Control is active.
No speed limit set.
System fault - seek assistance from a specialist garage immediately.
Basic requirements for starting the control The Speed Limiter is activated.
The current speed is higher than approx. 30 km/h.
Operation description
Fig. 143
Operating elements of the speed limiter: Vehicle with Speed Lim-
iter / vehicle with GRA and Speed Limiter
Read and observe
on page 121 first.
Overview of the control elements of the Speed Limiter » Fig. 143ASpeed Limiter disable (set limit delete) Interrupt control (sprung position) Activate Speed Limiter (regulation deactivated) For vehicles with GRA and Speed Limiter, the GRA is activated by
the switch in the
position by being adjusted. The activation of
the Speed Limiter occurs only after pressing the button
.BTake control again a)
/ Increase speed - short press (in increments
of 1 km/h), long press (in increments of 10 km/h)CStart regulation / reduce speed - short press (in increments of 1
km/h), long press (in increments of 10 km/h)DSwitch between GRA » page 119 and Speed Limitera)
If no speed limit is set, the current speed is set as the speed limit.
At the start of the regulation, the current speed is set as the speed limit and
displayed in the instrument cluster display. The warning light illuminates in
the instrument cluster.
121Assist systems