130Driving and operatingCatalytic converter
The catalytic converter reduces the
amount of harmful substances in the
exhaust gases.Caution
Fuel grades other than those listed on pages 3 166, 3 225 could
damage the catalytic converter or
electronic components.
Unburnt fuel will overheat and
damage the catalytic converter.
Therefore avoid excessive use of the starter, running the fuel tank
dry and starting the engine by
pushing or towing.
In the event of misfiring, uneven
engine running, a reduction in engine performance or other unusual
problems, have the cause of the fault
rectified by a workshop as soon as
possible. In an emergency, driving
can be continued for a short period,
keeping vehicle speed and engine
speed low.
AdBlue
General information
The selective catalytic reduction
(BlueInjection) is a method to
substantially reduce the nitrogen
oxides in the exhaust emission. This
is achieved by injecting a Diesel
Exhaust Fluid (DEF) into the exhaust
system. The ammonia released by
the fluid reacts with nitrous gases
(NO x) from the exhaust and turns it
into nitrogen and water.
The designation of this fluid is
AdBlue ®
. It is a non-toxic, non-
flammable, colourless and odourless
fluid which consists of 32% urea and
68% water.9 Warning
Avoid contact of your eyes or skin
with AdBlue.
In case of eye or skin contact,
rinse off with water.
Caution
Avoid contact of the paintwork with AdBlue.
In case of contact, rinse off with water.
AdBlue freezes at a temperature of
approx. -11 °C. As the vehicle is
equipped with an AdBlue preheater,
the emissions reduction at low
temperatures is ensured. The AdBlue
preheater works automatically.
Notice
Frozen and again liquefied AdBlue is usable without quality loss.
Level warnings
The AdBlue consumption is approx. 1.5 l per 600 miles. The consumption
can be higher depending on driving
behaviour (e.g. high load or towing).
Depending on the calculated range of AdBlue, different messages are
displayed in the Driver Information
Centre. The messages and the
restrictions are a legal requirement.
Driving and operating131The first possible warning message
appears at an AdBlue range below
1500 miles, shows up at each start
and each 190 miles range reduction:
Top up AdBlue: Starting impossible in
1500 mi
Additionally, control indicator Y
illuminates continuously and a chime
sounds with every message pop-up.
At an AdBlue range below 380 miles,
the following warning message is being displayed, shows up at each start and each 12 miles range
reduction:
Top up AdBlue: Starting impossible in 380 mi
Additionally, control indicator Y
flashes continuously and a chime sounds with every message pop-up.
Notice
In case of high AdBlue consumption,
the Driver Information Centre may
display this warning without the
previous warning stages.
The last warning level is entered
when the AdBlue tank is empty.
Restart of the engine is not possible.The following warning message is
being displayed and cannot be
dismissed:
Top up AdBlue: Starting impossible
Additionally, control indicator Y
flashes continuously and engine
cannot be restarted until AdBlue tank is being filled with at least 5 l.
High emission warnings If the exhaust emission rises above a
certain value, warnings similar to the
range warnings will be displayed in
the Driver Information Centre.
Requests to have the exhaust system checked and finally the
announcement of the prevention of
an engine restart are displayed.
These restrictions are a legal
requirement.
Consult a workshop for assistance.Refilling AdBlueCaution
Only use AdBlue that complies
with European standards
DIN 70 070 and ISO 22241-1.
Do not use additives.
Do not dilute AdBlue.
Otherwise the selective catalytic
reduction system could be
damaged.
Notice
Whenever a filling pump with a
nozzle for passenger cars is not
available at a filling station, use only
AdBlue bottles or canisters with a
sealed refill adapter for refilling, to
prevent splashback and overspill,
and in order to ensure that the fumes
from the tank are captured and do
not emerge. AdBlue in bottles or
canisters is available in many filling
180Vehicle careWhen the vehicle battery is beingreplaced, ensure that there are no
open ventilation holes in the vicinity of
the positive terminal. If a ventilation
hole is open in this area, it must be
closed off with a dummy cap, and the ventilation in the vicinity of the
negative terminal must be opened.
Ensure that the vehicle battery is
always replaced by the same type of
battery.
The vehicle battery has to be
replaced by a workshop.
Stop-start system 3 126.
Charging the vehicle battery9 Warning
On vehicles with stop-start
system, ensure that the charging potential does not exceed 14.6 V
when using a battery charger.
Otherwise the vehicle battery may
be damaged.
Jump starting 3 208.
Discharge protection
Battery voltage
When the vehicle battery voltage is
running low, a warning message will
appear in the Driver Information
Centre.
When the vehicle is being driven, the
load reduction function temporarily
deactivates certain functions, e.g. the
heated rear window.
The deactivated functions are
reactivated automatically as soon as
conditions permit.
Idle boost
If charging of the vehicle battery is
required due to battery condition, the
power output of the generator must
be increased. This will be achieved by an idle boost which may be audible.
A message appears in the Driver
Information Centre.
Power outlet
The power outlets are deactivated in
the event of low vehicle battery
voltage.Warning label
Meaning of symbols:
● No sparks, naked flames or smoking.
● Always shield eyes. Explosive gases can cause blindness or
injury.
● Keep the vehicle battery out of reach of children.
● The vehicle battery contains sulphuric acid which could cause
blindness or serious burn
injuries.
241QQuickheat ................................... 118
R
Radio Frequency Identification (RFID) ..................................... 237
Radio remote control ...................21
Rain sensor .................................. 88
REACH ....................................... 232
Reading lights ............................ 107
Rear floor storage cover ..............64
Rear fog light ...............88, 106, 186
Rear seats ................................... 45
Rear view camera ...................... 162
Rear window wiper and washer ..73
Recommended fluids and lubricants ........................ 219, 223
Refuelling ................................... 167
Registered trademarks ...............233
Reverse light............................... 186
Reversing lights .........................106
Ride control systems ..................139
Roadside assistance ....................99
Roof .............................................. 38
Roof load ...................................... 67
Roof rack ..................................... 67
S Safety belts ................................... 46
Seat adjustment ....................... 7, 42
Seat belt ........................................ 8Seat belt reminder .......................82
Seat belts ..................................... 46
Seat heating ................................. 44
Seat position ................................ 41
Selective catalytic reduction .......130
Selector lever.............................. 133
Service ............................... 120, 215
Service display ............................ 81
Service information ....................215
Service vehicle soon .................... 84
Side airbag system ......................52
Side blind spot alert ..............88, 158
Sidelights .................................... 101
Side turn lights ........................... 190
Software update ......................... 232
SOS .............................................. 99
Spare wheel ............................... 204
Speed limiter......................... 88, 143
Speedometer ............................... 79
Starting and operating ................122
Starting off ................................... 16
Starting the engine ....................124
Steering ...................................... 122
Steering wheel adjustment ......9, 70
Steering wheel controls ...............70
Stop engine .................................. 84
Stop-start system........................ 126
Storage ......................................... 61
Storage compartments .................61
Sun visor lights .......................... 108Sun visors .................................... 38
Symbols ......................................... 4
System check ............................... 84
T
Tachometer ................................. 80
Tail lights ................................... 186
Three-point seat belt .................... 47
Through-loading facility ................62
Tools .......................................... 195
Tow bar....................................... 169
Towing ................................ 169, 209
Towing another vehicle .............210
Towing equipment .....................170
Towing the vehicle .....................209
Trailer hitch ................................. 169
Trailer towing ............................. 170
Transmission ............................... 16
Transmission display .................133
Tread depth ............................... 198
Trip odometer .............................. 79
Turn lights ............................ 82, 105
Tyre chains ................................ 199
Tyre deflation detection system . 197
Tyre designations ......................196
Tyre pressure ............................ 196
Tyre pressures ........................... 230
Tyre repair kit ............................. 200