Trip computer (on-board com-
puter).................................................. 171
Trip meter
see Trip odometer
Trip odometer
Display (vehicles with steering
wheel buttons) ............................... 164
Display (vehicles without steering
wheel buttons) ............................... 160
Resetting ....................................... 159
see Trip computer (on-board computer)
Turn signals
Replacing bulbs (front) ..................... 89
Replacing bulbs (rear) ...................... 90
Switching on/off .............................. 82
Turn signals (Chassis Cab)
Replacing bulbs (rear) ...................... 91
Twin front-passenger seat
Stowage compartment .................. 202
Two-way radios
Type approval/frequency .............. 271
TWR (Tongue Weight Rating) (defi-
nition) ................................................. 261
U
Unlocking
From inside the vehicle (central
unlocking button) ............................. 63
USB port ............................................. 207
V
Vehicle
Data acquisition ............................... 30
Display message ............................ 189
Electronics ..................................... 271
Equipment ....................................... 23
Individual settings (vehicles with
steering wheel buttons) ................. 165
Limited Warranty ............................. 23
Loading .......................................... 254
Locking (SmartKey) .......................... 59
Lowering ........................................ 267
Maintenance .................................... 24
Operating safety .............................. 26
Parking for a long period ................ 129
Pulling away ................................... 119 Raising ........................................... 263
Registration ..................................... 28
Reporting problems ......................... 28
Securing from rolling away ............ 127
Towing away .................................. 239
Transporting .................................. 242
Unlocking (SmartKey) ...................... 59
Vehicle battery
see Battery (vehicle)
Vehicle bodies ..................................... 28
Body/equipment mounting direc-
tives for trucks ................................. 28
Vehicle data ....................................... 281
Vehicle identification number .......... 272
Vehicle identification plate .............. 272
Vehicle tool kit .................................. 236
Voltage supply
Fuses ............................................. 242
W
WarningStickers ........................................... 25
Warning and indicator lamp
Power assistance for the steering .. 199
Warning and indicator lamps
Brakes ........................................... 192
Check Engine ................................. 196
Coolant .......................................... 195
Diesel Exhaust Fluid (DEF) ............. 193
Electrical step ................................ 199
ESP
®.............................................. 190
ESP®function ................................ 194
Overview .......................................... 34
Seat belt ........................................ 198
Warning lamp .................................... 237
Warning triangle ................................ 237
Warning- and indicator lamps
ABS ................................................ 191
Air filter .......................................... 197
ASR ................................................ 190
BAS ................................................ 191
Battery charge ............................... 194
Brake wear .................................... 194
Bulbs .............................................. 198
Doors ............................................. 198
Engine oil level ............................... 195
Preglow .......................................... 197
Index21
Problems with PARKTRONIC
ProblemPossible causes/consequences andMSolutions
Only the red segments in
the PARKTRONIC warn-
ing displays are lit.
In addition, a warning
tone sounds for approx.
two seconds
PARKTRONIC is deacti-
vated after approx-
imately 20 seconds.
The indicator lamp of the
f button lights up
and the red segments in
the PARKTRONIC warn-
ing display go out.PARKTRONIC has malfunctioned and has switched itself off.
XIf problems persist, have PARKTRONIC checked at a qualified spe- cialist workshop.
The PARKTRONIC warn-
ing displays implausible
distances.
For example, all the seg-
ments may be lit even
though there is no obsta-
cle present.The PARKTRONIC sensors are dirty or iced up.
XClean the PARKTRONIC sensors (Ypage 232).
XTurn the key to position 2in the ignition lock.
The license plate or other parts attached near the sensors may not be
secured correctly.
XCheck the license plate and attachment parts near the sensors for
correct seating.
An external radio or ultrasonic source may be causing interference.
XCheck PARKTRONIC functions in a different location.
Rear view camera
Important safety notes
The rear view camera is only an aid. It cannot
replace your own awareness of the immediate
surroundings. You are responsible for safe
maneuvering, parking and pulling away. When
maneuvering, parking and pulling away, make
sure that there are no persons, animals or
objects in the maneuvering area.
The rear view camera is a visual parking aid.
Information on operation can be found in the
separate Audio 15 supplement.
The camera is in the middle of the roof above the
high-mounted brake lamp (
Ypage 232).
You can find information on cleaning the camera
in the "Maintenance and care" section
(
Ypage 232).
Working mode
ADR (working speed governor)
General notes
When activated, ADR automatically increases
the engine speed to a preset speed or a speed
you have set.
iAfter a cold start, the idling speed of the
engine is increased automatically. If the pre-
set working speed is lower than the increased idling speed, the working speed is only
reached once the engine has completed the
warm-up phase.
It is only possible to activate ADR with the
vehicle stationary and the parking brake
applied.
The selector lever of the automatic transmis-
sion must be in position P.
Working mode151
Driving and parking
Z
Starter battery in the left footwell
XFirst loosen and remove the negative terminal
clamp so that it is no longer in contact with
the terminal.
XRemove the cover from the positive terminal.
XLoosen the positive terminal clamp and fold it
up to the side together with the pre-fuse box.
Reconnecting the starter battery
!Always connect the battery in the order
described below. Never swap the terminal
clamps. You may otherwise damage the vehi-
cle electronics.
XFold the positive terminal clamp with the pre-
fuse box down to the terminal.
XConnect the positive terminal clamp.
XAttach the cover to the positive terminal.
XConnect the negative terminal clamp.
XPosition battery cover :so that screws ;
are positioned over the large recesses.
XSlide battery cover :in the direction of
travel into the smaller recesses.
XTighten screws ;.
XInstall the floor covering (Ypage 224).
Carry out the following work after connecting
the battery:
XReset the side windows (Ypage 71).
Removing/installing the starter bat-
tery
Removing the starter battery
XDisconnect the battery (Ypage 225).
XPull breather hose with connector bracket ;
from connection :on the degassing cover.
XLoosen the bolts holding retainer =, which
prevents the battery from moving around.
XPull retainer =upwards.
XSlide the battery from its anchorage in the
direction of travel.
XFold the bar of the battery upwards and
remove the battery from the battery case.
226Battery
Maintenance and care
Installing the starter battery
XInsertth ebattery int oth ebattery case.
XFold down th ebar of th ebattery.
XSlide th ebattery int oits anchorage in th e
opposit edirection to th edirection of travel .
XInsertretainer =.
XTightenth ebolt son retainer =whic hhold s
th ebattery in place.
XAttac hbreather hos ewit hconnecto r
bracke t; to connection :of th eventilation
cover .
XConnect th ebattery (Ypage 225).
Disconnecting and connecting the
additional battery (engine compart-
ment)
Important safety notes
GWARNIN G
During th echarging process, abattery produ-
ce shydrogen gas. If ashort circuit occur sor
sparks are created, th ehydrogen gas can
ignite. Ther eis aris kof an explosion .
RMakesur ethat th epositive termina lof a
connecte dbattery does no tcome int ocon-
tac twit hvehicl eparts.
RNever plac emetal objects or tools on abat -
tery.
RIt is important that you observ eth edescri-
bed order of th ebattery terminals when
connecting and disconnecting abattery.
RWhen jump-starting ,mak esur ethat th e
battery pole swit hidentical polarit yare
connected.
RIt is particularly important to observ eth e
describe dorder when connecting and dis-
connecting th ejumper cables.
RNever connec tor disconnect th ebattery
terminals while th eengin eis running.
Disconnecting the additional battery
!Switc hoff th eengin eand remove th eke y
from th eignition lock. Firstly remove th ebat -
tery terminals. Otherwise, you could destroy electronic component
ssuc has th ealterna-
tor.
Always disconnect th estarter battery in th e
battery cas ein th eleft-han dside footwell
first .
!Always disconnect th ebattery in th eorder
describe dbelow. Never swap th etermina l
clamps. You may otherwise damag eth evehi-
cle electronics .
Additional battery in th eengin ecompartmen t
XSwitchoff all electrical consumers.
XSwitc hoff th eengin eand remove th eke y
from th eignition lock.
XOpen th ehoo d (Ypage 214).
XFirst loosen and remove th enegative termina l
clam pso that it is no longer in contact wit h
th eterminal.
XRemove th ecover from th epositive terminal.
XLoosen and remove th epositive termina l
clamp.
Connecting the additional battery
!Always connec tth ebattery in th eorder
describe dbelow. Never swap th etermina l
clamps. You may otherwise damag eth evehi-
cle electronics .
XConnect thepositive termina lclamp.
XAttac hth ecover to th epositive terminal.
XConnect th enegative termina lclamp.
XClose th ehood.
Carr yout th efollowin gwor kafter connecting
th ebattery:
XReset th eside windows (Ypage 71).
Battery227
Maintenance and care
Z