Before driving into a car wash
So that the vehicle can roll into a car wash ob‐
serve instructions for going into an automatic
car wash, refer to page 198.
Driving in detail: eDRIVE
Hints Awareness of vehicle reduced when
driven in electric mode
When driving in electric mode, note that, due
to the lack of engine noise, pedestrians and
other traffic might pay less attention to the ve‐
hicle due to missing engine noises. Please
take special care when parking or leaving a
parking space.◀
Cautiously remove your foot from the ac‐
celerator pedal
Cautiously remove your foot from the acceler‐
ator pedal because the braking effect of the
electric motor can be stronger than with a
combustion engine. Otherwise, abrupt braking
and slow-down may confuse other traffic.◀
Accelerator pedal positions1Deceleration2Coasting3Acceleration or constant speed: ePOWER
Deceleration
The deceleration depends on the position of
the accelerator pedal. The less the actuation of
the accelerator pedal, the greater the decelera‐
tion. In this way energy is recovered and the
high-voltage battery is charged.
Releasing the accelerator pedal causes decel‐
eration similar to cautious braking. Addition‐
ally, the brake lights will come on without hit‐
ting the brakes.
Energy recovery: CHARGE The high-voltage battery is recharged in part
through energy recovery. The electric motor
acts as a generator when decelerating and
converts the kinetic energy into electrical en‐
ergy.
Energy can be recovered if the following condi‐
tions are met:▷The vehicle is moving.▷Speed higher than approx.
12 mph/20 km/h.▷Selector lever position D or R is set.▷Gas pedal is not actuated or only pressed
down 1/3 of the way.
Energy cannot be recovered in the following
situations:
▷Selector lever position N is set.▷While drive stability control systems, e.g.
DTC, are active and control the vehicle,
even though this is not indicated by an in‐
dicator light.▷The high-voltage battery is fully charged.▷When temperature of the high-voltage bat‐
tery is very low or very high.
In winter it might be possible that the en‐
ergy recovery is temporarily unavailable af‐
ter startup.
Always be ready to apply the brake
Always be ready to apply the brake, be‐
cause without energy recovery there is also no
braking action through the electric drive unit.
The vehicle could roll further than anticipated.
This may constitute a danger for other traffic.◀
Seite 64ControlsDriving66
Illuminated: DSC failed. Have the system
checked by the service center.
For additional information, refer to Dynamic
Stability Control DSC, refer to page 106.
DSC Dynamic Stability Control is
deactivated or DTC Dynamic Traction
Control is activated
Dynamic Stability Control DSC is
switched off or Dynamic Traction Con‐
trol DTC is switched on.
For additional information, refer to Dynamic
Stability Control, refer to page 106, and Dy‐ namic Traction Control, refer to page 107.
FTM Flat Tire Monitor The Flat Tire Monitor signals a loss of
tire inflation pressure in a tire.
Reduce your speed and stop cau‐
tiously. Avoid sudden braking and steering ma‐
neuvers.
For more information, see Flat Tire Monitor, re‐
fer to page 98.
Tire Pressure Monitor TPM Illuminated: the Tire Pressure Monitor
signals a loss of tire inflation pressure
in a tire.
Reduce your speed and stop cautiously. Avoid
sudden braking and steering maneuvers.
Flashing and then continuously illuminated: no
flat tire or loss of tire inflation pressure can be
detected.▷Interference through systems or devices
with the same radio frequency: after leav‐
ing the area of the interference, the system
automatically becomes active again.▷RDC could not conclude the reset: perform
the reset of the system again.▷A wheel without TPM electronics is fitted:
have the service center check it if needed.▷Malfunction: have the system checked by
your service center.
For more information, see Tire Pressure Moni‐
tor, refer to page 95.
Steering system Steering system in some cases defec‐
tive.
Have the steering system checked by
the service center.
Engine functions Have the vehicle checked by the serv‐ice center.
For additional information, refer to On-
board Diagnostics socket, refer to page 186.
Green lights Turn signal Turn signal on.
Unusually rapid flashing of the indicator
lamp indicates that a turn signal bulb
has failed.
For additional information, refer to Turn signal,
refer to page 69.
Parking lights, headlight control Parking lights or headlights are acti‐
vated.
For additional information, refer to
Parking lights/low beams, headlight control, re‐
fer to page 89.
Cruise control The system is switched on. It maintains
the speed that was set using the con‐
trol elements on the steering wheel.
Seite 77DisplaysControls79
With Range Extender: fuel
gauge
The fill level bars indicate the available fuel
supply of the Range Extender when operating
readiness and drive readiness are switched on.
Additional range of the Range Extender on top
of pure electric range. If the Range Extender is
activated, the color of the fill level bar indicator
switches from gray to white.
Vehicle tilt position may cause the display to
vary.
Hints on refueling, refer to page 165.
Coolant temperature If the coolant along with the engine becomes
too hot, a Check Control message is displayed.
Check the coolant level, refer to page 183.
Odometer and trip odometer
Display▷Odometer, arrow 1, Scope of the on-board
computer, refer to page 85.▷Trip odometer, arrow 2.
Show/reset kilometers: TRIP
Press the knob.
▷With operating readiness turned off, the
time, the external temperature and the od‐
ometer are displayed.▷When operating readiness is switched on,
the trip odometer is reset.
External temperature
If the indicator drops to +37 ℉/+3 ℃ or lower, a
signal sounds.
A Check Control message is displayed.
There is an increased risk of ice on roads.
Seite 79DisplaysControls81
Driving stability control systemsVehicle features and optionsThis chapter describes all standard, country-
specific and optional features offered with the
series. It also describes features that are not
necessarily available in your car, e. g., due to
the selected options or country versions. This
also applies to safety-related functions and
systems.
Antilock Brake System ABS
ABS prevents locking of the wheels during
braking.
The vehicle contains its steering power even
during full brake applications, thus increasing
active safety.
ABS is ready when car is ready to drive.
Brake assistant
When you apply the brakes rapidly, this system automatically produces the greatest possible
braking force boost. It reduces the braking dis‐
tance to a minimum during emergency stop.
This system utilizes all of the benefits provided
by ABS.
Do not reduce the pressure on the brake pedal
for the duration of the emergency stop.
Energy recovery
In the event of danger, such as with locked
wheels, energy recovery is reduced in order to
prevent unstable driving situations.
Always be ready to apply the brake
Always be ready to apply the brake, be‐
cause without energy recovery there is also no
braking action through the electric drive unit.The vehicle could roll further than anticipated.
This may constitute a danger for other traffic.◀
DSC Dynamic Stability
Control
The concept DSC prevents traction loss in the power
wheels when driving off and accelerating.
DSC also recognizes unstable vehicle condi‐
tions such as fishtailing or nose-diving. Within
the physical limits DSC helps to keep the vehi‐
cle on a steady course by reducing engine
speed and by applying brakes to the individual
wheels.
Note Adjust your driving style to the situation
An appropriate driving style is always the
responsibility of the driver.
The laws of physics cannot be repealed, not
even with DSC.
Therefore, do not reduce the additional safety
margin by driving in a risky manner.◀
Do not deactivate DSC when driving with
roof load
Do not deactivate Dynamic Stability Control DSC when driving with roof load, e.g. roof-
mounted luggage rack.
Otherwise, driving safety is not given in driv‐
ing-critical situation due to the elevated center
of gravity.◀
Indicator/warning lights The indicator lamp flashes: DSC con‐
trols the drive and braking forces.Seite 104ControlsDriving stability control systems106
ECO PROECO PRO, refer to page 151, provides consis‐
tent tuning to maximize range.
Comfort functions and the engine controller
are adjusted.
The program can be configured to individual
specifications.
Activating ECO PRO Press button repeatedly until ECO
PRO is displayed in the instrument
cluster.
Configuring ECO PRO1.Activate ECO PRO.2."Configure ECO PRO"
Make the desired settings.
ECO PRO+ ECO PRO+, refer to page 151, also limits the
maximum speed and reduces climate control and lighting functions.
Comfort functions and the engine controller
are adjusted.
Activating ECO PRO+ Press button repeatedly until ECO
PRO+ is displayed in the instrument
cluster.
Displays
Program selection Pressing the button displays a
list of the selectable programs.
Depending on your vehicle's op‐
tional features, the list in the in‐
strument cluster can differ from
the illustration shown.
Selected program
The ECO PRO and ECO PRO+ driving pro‐
grams are shown in the instrument cluster. In
addition, the display on the automatic climate
control lights up
Display on the Control Display Program changes can be displayed on the
Control Display.1."Settings"2."Driving mode"3."Driving mode info"
Drive-off assistant
This system supports driving off on inclines.
The parking brake is not required.
1.Hold the vehicle in place with the foot
brake.2.Release the foot brake and drive off with‐
out delay.
After the foot brake is released, the vehicle is
held in place for approx. 2 seconds.
Depending on the vehicle load, the vehicle may
roll back slightly.
Driving off without delay
After releasing the foot brake, start driv‐
ing without delay, since the drive-off assistant
will not hold the vehicle in place for more than
approx. 2 seconds and the vehicle will begin to
roll back.◀
Seite 106ControlsDriving stability control systems108
Driving comfortVehicle features and options
This chapter describes all standard, country-
specific and optional features offered with the
series. It also describes features that are not
necessarily available in your car, e. g., due to
the selected options or country versions. This
also applies to safety-related functions and
systems.
Camera-based cruise control
with Stop & Go function,
ACC
The concept Use this system to select a desired speed that
the vehicle will maintain automatically on clear
roads.
To the extent possible, the system automati‐
cally adjusts the speed to a slower vehicle
ahead of you.
A camera on the interior rear view mirror is
used to detect vehicles driving ahead.
The distance that the vehicle maintains to the
vehicle ahead of you can be varied.
For safety reasons, it depends on the speed.
To maintain a certain distance, the system au‐
tomatically reduces the speed, applies the
brakes lightly, or accelerates again if the vehi‐
cle ahead begins moving faster.
If the vehicle ahead of you brakes to a halt, and
then proceeds to drive again within a brief pe‐
riod, the system is able to detect this within the
given system limits. Your own vehicle will
brake automatically and then accelerate again.
If the vehicle ahead of you drives away again
after a prolonged period, briefly press the ac‐
celerator pedal or press the appropriate button
to reactivate the system. The vehicle will auto‐
matically accelerate.As soon as the road is clear, the vehicle accel‐
erates to the desired speed.
The speed is also maintained downhill, but
may not be maintained uphill if engine power is
insufficient.
General information
Depending on the driving settings, the features
of the cruise control can change in certain
areas.
Hints Personal responsibility
Even an active system holds the driver
responsible for his or her driving, particularly
for staying in your lane, adjusting your speed,
keeping your distance and for your driving
style all in relation to traffic.
Technically the system has its limits, it cannot
independently react to all traffic situations.
Monitor your driving, be on the alert, observe
the vehicle surroundings and other traffic and
react when needed, e.g. through braking,
steering or make evasive maneuvers - risk of
accident.◀
Unfavorable weather conditions
In the event of unfavorable weather and
light conditions, e. g. if there is rain, snowfall,
slush, fog or glare, this may result in poorer
recognition of vehicles as well as short-term
interruptions for vehicles that are already de‐
tected. Drive attentively, and react to the cur‐
rent traffic situation. Intervene actively when
necessary, e.g., by braking, steering or making
an evasive maneuver, otherwise, there is the
risk of an accident.◀Seite 107Driving comfortControls109
When you approach a curve the system may
briefly report vehicles in the next lane due to
the bend of the curve. If the system deceler‐
ates you may compensate it by briefly acceler‐
ating.
After releasing the gas pedal the system is re‐
activated and controls speed independently.
Driving away In some situations, the vehicle cannot drive off
automatically; for example:
▷On steep inclines.▷From behind bumps in the road.
In these cases, step on the accelerator pedal.
Malfunction
A Check Control message is displayed if the
system fails.
The system may not be fully functional in the
following situations:
▷When an object was not correctly de‐
tected.▷In heavy fog, rain, sprayed water or snow‐
fall.▷In tight curves.▷If the camera viewing field or the front
windshield are dirty or covered.▷When driving toward bright lights.▷Up to 20 seconds after drive readiness is
switched on via the Start/Stop knob.▷During calibration of the camera immedi‐
ately after vehicle shipment.Cruise control
The concept The system maintains a preset speed via the
buttons on the steering wheel. The system
brakes on downhill gradients if engine braking
is insufficient.
General information
Depending on the driving settings, the features
of the cruise control can change in certain
areas.
Hints Unfavorable conditions
Do not use the system if unfavorable
conditions make it impossible to drive at a con‐
stant speed, e.g.:▷On winding roads.▷In heavy traffic.▷On slippery roads, in fog, snow or rain, or
on a loose road surface.
Otherwise, you could lose control of the vehi‐
cle and cause an accident.◀
At a glance
Buttons on the steering wheel
Press buttonFunctionSystem on/off, interruptStore speedResume speedRocker reel: change, hold,
store speedSeite 113Driving comfortControls115
with each other. In addition, there is no assur‐
ance that the radiation generated during trans‐
mission will be conducted away from the vehi‐
cle interior.◀
Hydroplaning Hydroplaning
When driving on wet or slushy roads, re‐
duce your speed to prevent hydroplaning.◀
On wet or slushy roads, a wedge of water can
form between the tires and road surface.
This phenomenon is referred to as hydroplan‐
ing. It is characterized by a partial or complete
loss of contact between the tires and the road
surface, ultimately undermining your ability to
steer and brake the vehicle.
Driving through water Observe water level and speed
Do not exceed the maximum water level
and maximum speed; otherwise, the vehicle's
engine, the electrical systems and the trans‐
mission may be damaged.◀
Drive though calm water only and only if it is
not deeper than 9.8 inches/25 cm and at this
height, no faster than walking speed, up to 3 mph/5 km/h.
Braking safely
Your vehicle is equipped with ABS as a stand‐
ard feature.
Applying the brakes fully is the most effective
way of braking in situations needed.
Steering is still responsive. You can still avoid
any obstacles with a minimum of steering ef‐
fort.
Pulsation of the brake pedal and sounds from
the hydraulic circuits indicate that ABS is in its
active mode.
In certain braking situations, the perforated
brake discs can cause functional problems.However, this has no effect on the perform‐
ance and operational reliability of the brake.
Objects in the range of movement of the pedals and in the footwell
Do not allow objects in the interior
around pedals and foot space
Keep floor mats, carpets, and any other ob‐
jects out of the pedal area and do not stow
them in the footwell; otherwise, the function of
the pedals could be impeded while driving.
Do not place additional floor mats over existing
mats or other objects.
Only use floor mats that have been approved
for the vehicle and can be properly attached to
floor.
Ensure that the floor mats are securely fas‐
tened again after they were removed for clean‐
ing, e.g.◀
Hills Avoid stressing the brakes
Avoid placing excessive stress on the
brake system. Light but consistent brake pres‐
sure can lead to high temperatures, brakes
wearing out and possibly even brake failure.◀
Do not drive in neutral
Do not drive in neutral or with drive readi‐
ness switched off, as doing so disables engine
braking. In addition, steering and brake assist
are unavailable with the engine stopped.◀
On downhill sections, use energy recovery if
possible to decelerate the vehicle.
Brake disc corrosion
Brake disc corrosion and contamination of the
brake pads are favored by:▷Low mileage.▷Extended periods when the vehicle is not
used at all.▷Infrequent use of the brakes.Seite 144Driving tipsThings to remember when driving146