Page 157 of 255

Driving and operating155Driver assistance
systems9 Warning
Driver assistance systems are
developed to support the driver
and not to replace the driver's
attention.
The driver accepts full
responsibility when driving the
vehicle.
When using driver assistance
systems, always take care
regarding the current traffic
situation.
Cruise control
The Cruise control can store and
maintain speeds of approx. 30 to
200 km/h. Deviations from the stored
speeds may occur when driving uphill or downhill.
For safety reasons, the cruise control cannot be activated until the brake
pedal has been operated once.
Activating in first gear is not possible.
Do not use the cruise control if it is not advisable to maintain a constant
speed.
With automatic transmission, only
activate cruise control in automatic
mode.
Control indicator m 3 95.
Switching on the system
Press m: control indicator m in
instrument cluster illuminates white.
Activation of the functionality
Accelerate to the desired speed and
turn thumb wheel to SET/-: the
current speed is stored and
maintained. Control indicator m in
instrument cluster illuminates green.
On Uplevel display m illuminates
green and set speed is indicated.
Accelerator pedal can be released.
Vehicle speed can be increased by depressing the accelerator pedal.
When the accelerator pedal is
released, the previously stored speed
is resumed.
Cruise control remains activated
while gearshifting.
Page 196 of 255
194Vehicle careFuse extractorA fuse extractor may be located in the
fuse box in the engine compartment.
Place the fuse extractor on the
various types of use from the top or
side, and withdraw fuse.
Engine compartment fuse
box
The fuse box is in the engine
compartment.
Disengage the cover, lift it upwards
and remove.
Mini FusesNo.Circuit1Sunroof2Exterior mirror switch / Rain
sensor / Power window DRV3–4–5Electrical brake control module6Intelligent battery sensor7Steering column lock8Transmission control module9–10Rear view camera / Interior rear
view mirror / Headlight switch /
Headlight11Rear window wiper12Heated rear window13Seat, lumbar support14Heated exterior mirrors
Page 197 of 255
Vehicle care195No.Circuit15LPG module / Fuel system
control module16Seat heating17Transmission control module R/
C / Water pump / Auxiliary
heater18Engine control module R/C19Fuel pump20–21Cooling fan22–23Ignition coil / Injectors24Washer pump25Headlamp actuator26Engine control sensors27–28Ignition29Ignition 1/2No.Circuit30Exhaust system31Left-hand high beam32Right-hand high beam33Engine control module34Horn35Air conditioning system36Front fog light
J-cases Fuses
No.Circuit1Electrical brake control module2Front wiper3Linear power module4Power terminal of instrument
panel fuse box5–6Fuel heater7StarterNo.Circuit8Cooling fan9Cooling fan10Engine control module / Glow
plug11Starter
Instrument panel fuse box
In left-hand drive vehicles, the interior fuse box is located on the underside
of the driver's side instrument panel.
Page 199 of 255
Vehicle care197No.Circuit16Adaptive forward lighting17Column lock18Ultrasonic park assist module19Body control module / Regu‐
lated voltage control20Steering wheel21–22Cigarette lighter / DC accessory
power outlet (front)23Cigarette lighter / DC accessory
power outlet (rear center
console)24Spare25Telematics service module26Heated steering wheel27Instrument panel cluster / Info‐
tainment system / Auxiliary
heater switch28Trailer socketNo.Circuit29Info Display / Infotainment
system30Transmission control module31Instrument panel cluster32Infotainment system33Trailer socket34Passive entry / Passive start
module
S/B Fuses
No.Circuit01Power seat switch02Spare03Power windows front04Power windows rear05Logistic mode06Power seat switchNo.Circuit07Spare08Spare
Midi Fuse
No.CircuitM01PTC
Load compartment fuse box
Located in the left side of rear
compartment.
To access the fuses, remove the cover.
Page 205 of 255

Vehicle care203If the tyre pressure must be reduced
or increased, switch off ignition.
Only mount wheels with pressure
sensors, otherwise the tyre pressure
will not be displayed and w
illuminates continuously.
A spare wheel or temporary spare
wheel is not equipped with pressure
sensors. The tyre pressure
monitoring system is not operational
for these tyres. Control indicator w
illuminates. For the further three
tyres, the system remains
operational.
The use of commercially-available liquid tyre repair kits can impair the
function of the system. Factory-
approved repair kits can be used.
Operating electronic devices or being
close to facilities using similar wave
frequencies could disrupt the tyre
pressure monitoring system.
Each time the tyres are replaced, tyre pressure monitoring system sensors
must be dismounted and serviced.
For the screwed sensor, replace
valve core and sealing ring. For the
clipped sensor, replace complete
valve stem.Vehicle loading status
Adjust tyre pressure to load condition
according to tyre information label or
tyre pressure chart 3 236, and select
the appropriate setting in the menu Tyre Load in the Driver Information
Centre, Vehicle Information Menu
3 96. This setting is the reference for
the tyre pressure warnings.
The Tyre load menu only appears
when the vehicle is at a standstill and the parking brake is applied. On
vehicles with automatic transmission
the selector lever must be in P.
Midlevel display:Select the Tyre load page under the
Vehicle Information Menu ? in the
Driver Information Centre 3 96.
● Light for comfort pressure up to
three people.
● Eco for Eco pressure up to three
people.
● Max for full loading.
Uplevel display:
Select the Tyre load page under the
Options Menu in the Driver
Information Centre 3 96.
Page 206 of 255

204Vehicle care●Light for comfort pressure up to
three people.
● Eco for Eco pressure up to three
people.
● Max for full loading.
Tyre pressure sensor matching process
Each tyre pressure sensor has a
unique identification code. The
identification code must be matched
to a new wheel position after rotating
the wheels or exchanging the
complete wheel set and if one or more tyre pressure sensors were replaced.The tyre pressure sensor matching
process should also be performed
after replacing a spare wheel with a
road wheel containing a tyre pressure
sensor.
The malfunction light w and the
warning message should extinguish
at the next ignition cycle. The sensors
are matched to the wheel positions,
using a relearn tool, in the following
order: left side front wheel, right side
front wheel, right side rear wheel andleft side rear wheel. The turn signal
light at the current active position is
illuminated until sensor is matched.
Consult a workshop for service. There are two minutes to match the first
wheel position, and five minutes
overall to match all four wheel
positions. If it takes longer, the
matching process stops and must be
restarted.
The tyre pressure sensor matching
process is:
1. Apply the parking brake.
2. Turn the ignition on.
3. On vehicles with automatic transmission: set the selector
lever to P.
On vehicles with manual
transmission: select neutral.
4. Press MENU on the turn signal
lever to select the Vehicle
Information Menu in the Driver
Information Centre.
5. Turn the adjuster wheel to scroll to
the tyre pressure menu.
Midlevel display:
Uplevel display:
Page 216 of 255

214Vehicle careJump startingDo not start with a quick charger.
A vehicle with a discharged battery
can be started using jump leads and the battery of another vehicle.9 Warning
Be extremely careful when starting
with jump leads. Any deviation
from the following instructions can
lead to injuries or damage caused
by battery explosion or damage to the electrical systems of both
vehicles.
9 Warning
Avoid contact of the battery with
eyes, skin, fabrics and painted
surfaces. The fluid contains
sulphuric acid which can cause
injuries and damage in the event
of direct contact.
● Never expose the battery to naked flames or sparks.
●A discharged battery can already
freeze at a temperature of 0 °C.
Defrost the frozen battery before
connecting jump leads.
● Wear eye protection and protective clothing when
handling a battery.
● Use a booster battery with the same voltage (12 V). Its capacity
(Ah) must not be much less than
that of the discharged battery.
● Use jump leads with insulated terminals and a cross section of
at least 16 mm 2
(25 mm 2
for
diesel engines).
● Do not disconnect the discharged
battery from the vehicle.
● Switch off all unnecessary electrical consumers.
● Do not lean over the battery during jump starting.
● Do not allow the terminals of one
lead to touch those of the other
lead.
● The vehicles must not come into contact with each other during
the jump starting process.● Apply the parking brake, transmission in neutral,
automatic transmission in P.
● Open the positive terminal protection caps of both batteries.
Lead connection order:
1. Connect the red lead to the positive terminal of the booster
battery.
2. Connect the other end of the red lead to the positive terminal of the
discharged battery.
Page 218 of 255

216Vehicle care
Screw in the towing eye as far as it will
go until it stops in a horizontal
position.
Attach a tow rope – or better still a tow
rod – to the towing eye.
The towing eye must only be used for towing and not for recovering the
vehicle.
Switch on ignition to release steering
wheel lock and to permit operation of
brake lights, horn and windscreen
wiper.
Switch the selector lever to neutral.
Release the parking brake.
Caution
Never tow a vehicle equipped with All Wheel Drive (AWD) with the
front or rear tyres on the road. If
you tow a vehicle equipped with
AWD while the front or rear tyres
are rolling on the road, the drive
system in the vehicle could be
severely damaged. When towing
vehicles equipped with AWD, all
four tyres must not be in contact
with the road.
Caution
Drive slowly. Do not drive jerkily.
Excessive tractive force can
damage the vehicle.
When the engine is not running,
considerably more force is needed to
brake and steer.
To prevent the entry of exhaust gases from the towing vehicle, switch on the
air recirculation system 3 127 and
close the windows.
Vehicles with manual transmission:
The vehicle must be towed facing
forwards. The maximum speed is
80 km/h . In all other cases, and when
the transmission is defective, the front axle must be raised off the ground.
Vehicles with automatic transmission:
Do not tow the vehicle using a towing eye. Towing with a tow rope could
cause severe automatic transmission damage. When towing vehicles with
automatic transmission, use flat bed
or wheel lift equipment.
Seek the assistance of a workshop. After towing, unscrew the towing eye.
Insert cap and close cap.