Page 218 of 317

216Driving and operatingdepending on the vehicle equipment,
either the radar behind the radiator
grille or the front camera in the
windscreen to detect the distance of
a vehicle directly ahead in your path. It is active at speeds above 40 km/h.
When a preceding vehicle is detected
ahead, the distance is indicated in
seconds, displayed on a page in the
Driver Information Centre 3 101.
Press MENU on the turn signal lever
to select Vehicle Information
Menu ? and turn the adjuster
wheel to choose following distance
indication page.
The minimum indicated distance is
0.5 s.
If there is no vehicle ahead or the vehicle ahead is out of range, two
dashes will be displayed: -.- s.
If Adaptive cruise control is active,
this page shows the alert sensitivity
setting instead of following distance setting. 3 206.
Active Emergency Braking
Active emergency braking can help to reduce the damage and injury from
crashes with vehicles and obstacles
directly ahead, when a collision can no longer be avoided either by
manual braking or by steering. Before
the active emergency braking
applies, the driver is warned by the forward collision alert 3 212.
The feature uses various inputs (e.g.
radar sensor, brake pressure, vehicle speed) to calculate the probability of
a frontal collision.
Active emergency braking operates automatically above walking speed,
provided that Auto collision
preparation setting is not deactivated
in the vehicle personalisation menu
3 108.
The system includes: ● brake preparation system
● emergency automatic braking
● forward looking brake assist9Warning
This system is not intended to
replace the driver responsibility of driving the vehicle and looking
ahead. Its function is limited to
supplemental use only. The driver shall continue to apply the brake
pedal as the driving situation
dictates.
Page 227 of 317

Driving and operating225Add-on signs● additional hints to traffic signs
● restriction of trailer towing
● tractor constraints
● wet warning
● ice warning
● direction arrows
Speed limit signs are displayed in the
Driver Information Centre until the
next speed limit sign or end of speed
limit is detected or up to a defined sign
timeout.
Combinations of multiple signs in the
display are possible.
An exclamation mark in a frame
indicates that there is an additional
sign detected which is not recognised
by the system.
The system operates without loss of
performance up to a speed of
200 km/h depending on the lighting
conditions. At night the system is
active up to a speed of 160 km/h.
Display indication Information about the currently valid
traffic signs is available on the
designated traffic sign assistant page in the Driver Information Centre.
Additionally, the currently valid speed
limit is displayed permanently in the
lower line of the Driver Information
Centre. In case a speed limit with
addon is available, a + symbol is
displayed in this area.
Choose ? via MENU and select
traffic sign assistant page with the
adjuster wheel on the turn signal lever 3 101.
When another page on the Driver
Information Centre menu was
selected and then traffic sign
assistant page is chosen again, the
last recognised traffic sign will be
displayed.
Alert function
The alert function can be activated or deactivated in the setting menu of the
traffic sign assistant page.
Page 228 of 317
226Driving and operating
Once activated and when the traffic
sign detection page is currently not
displayed, newly detected speed limit
and no passing signs are displayed
as popup alerts in the Driver
Information Centre.
When traffic sign assistant page is
displayed, press SET/CLR on the turn
signal lever.
Select Alerts ON or Alerts OFF by
turning the adjuster wheel and press
SET/CLR .
Pop-up alert is displayed for approx.
eight seconds in the Driver
Information Centre.
System reset
The content of the traffic sign memory
can be cleared in the setting menu of the traffic sign assistant page by
selecting Reset and confirm by
pressing SET/CLR on the turn signal
lever.
Page 239 of 317
Driving and operating237Dismounting the coupling ball bar
Open the protective flap and turn the
key to position c to unlock the
coupling ball bar.
Pull out rotary handle and turn
clockwise as far as it will go. Pull out coupling ball bar downwards.
Insert sealing plug in opening. Fold away socket.
Trailer stability assist
If the system detects snaking
movements, engine power is reduced
and the vehicle/trailer combination is
selectively braked until the snaking ceases. While system is working keep steering wheel as still as possible.
Trailer stability assist (TSA) is a
function of the Electronic Stability
Control 3 200.
Page 240 of 317

238Vehicle careVehicle careGeneral Information...................239
Accessories and vehicle modifications .......................... 239
Vehicle storage ........................239
End-of-life vehicle recovery .....240
Vehicle checks ........................... 240
Performing work ......................240
Bonnet ..................................... 240
Engine oil ................................. 241
Engine coolant ......................... 242
Power steering fluid .................243
Washer fluid ............................ 244
Brakes ..................................... 244
Brake fluid ............................... 244
Vehicle battery ......................... 244
Diesel fuel system bleeding .....246
Wiper blade replacement ........246
Bulb replacement .......................247
Halogen headlights ..................247
LED headlights ........................ 249
Front fog lights ......................... 249
Tail lights ................................. 250
Side turn lights ......................... 253
Number plate light ...................253Interior lights ............................ 254
Instrument panel illumination ...254
Electrical system ........................254
Fuses ....................................... 254
Engine compartment fuse box . 256
Instrument panel fuse box .......258
Load compartment fuse box ....259
Vehicle tools .............................. 261
Tools ........................................ 261
Wheels and tyres .......................261
Winter tyres ............................. 261
Tyre designations ....................261
Tyre pressure .......................... 262
Tyre pressure monitoring system .................................... 263
Tread depth ............................. 266
Changing tyre and wheel size . 267
Wheel covers ........................... 267
Tyre chains .............................. 267
Tyre repair kit .......................... 267
Wheel changing .......................270
Spare wheel ............................ 271
Jump starting ............................. 276
Towing ....................................... 278
Towing the vehicle ...................278
Towing another vehicle ...........279Appearance care .......................280
Exterior care ............................ 280
Interior care ............................. 282
Page 260 of 317
258Vehicle careInstrument panel fuse box
In left-hand drive vehicles, the fuse
box is behind the storage
compartment in the instrument panel.
Open the compartment and push it to the left to unlock. Fold the
compartment down and remove it.
In right-hand drive vehicles, the fuse
box is located behind a cover in the
glovebox. Open the glovebox, then
open the cover and fold it down.
No.Circuit1Cruise control/Speed limiter/
Adaptive cruise control/Steering wheel controls2Exterior lights/Body control
module3Exterior lights/Body control
module4Infotainment system5Infotainment system/Instrument6Power outlet/Cigarette lighter7Power outlet8Left low beam/Body control
module9Right low beam/Body control
module/Airbag module10Door locks/Body control module11Interior fan12–13Sunblind
Page 261 of 317
Vehicle care259No.Circuit14Diagnostic connector15Airbag16Power outlet17Air conditioning system18Logistics19Body control module20Body control module21Instrument panel cluster/Anti-
theft alarm system22Ignition sensor23Body control module24Body control module25Steering wheel heating26–
Load compartment fuse box
The fuse box is on the left side of the
load compartment behind a cover.
Remove the cover.
If equipped with tyre repair kit,
remove the complete box.
Fuse assignments
Page 263 of 317

Vehicle care261Vehicle tools
Tools
Some tools, the towing eye and (only on vehicles with spare wheel) the
vehicle jacking equipment are placed
in the rear storage in the load
compartment floor.
Open the cover in front of the tailgate.
Wheels and tyres
Tyre condition, wheel condition Drive over edges slowly and at right
angles if possible. Driving over sharp
edges can cause tyre and wheel
damage. Do not trap tyres on the kerb when parking.
Regularly check the wheels for
damage. Seek the assistance of a workshop in the event of damage or
unusual wear.
Winter tyres
Winter tyres improve driving safety at temperatures below 7 °C and should
therefore be fitted on all wheels.
All tyre sizes are permitted as winter
tyres 3 297.
In accordance with country-specific
regulations, affix the speed sticker in
the driver's field of view.Tyre designations
E.g. 215/60 R 16 95 H215:tyre width, mm60:cross-section ratio (tyre height
to tyre width), %R:belt type: RadialRF:type: RunFlat16:wheel diameter, inches95:load index e.g. 95 is equivalent
to 690 kgH:speed code letter
Speed code letter:
Q:up to 160 km/hS:up to 180 km/hT:up to 190 km/hH:up to 210 km/hV:up to 240 km/hW:up to 270 km/h
Choose a tyre appropriate for the
maximum speed of your vehicle.
The maximum speed is achievable at kerb weight with driver (75 kg) plus
125 kg payload. Optional equipment
could reduce the maximum speed of
the vehicle.
Performance 3 293.