Removing/replacing the cover
(front wheel arch) .......................... 119
Replacing the battery (auxiliary
heating remote control) .................... 140
Reserve (fuel tank)
see Fuel
Reserve fuel
Display message ............................ 250
Warning lamp ................................ .271
Residual heat (climate control) ........137
Restraint system
see SRS (Supplemental Restraint
System)
Rev counter ........................................ 215
Reverse gear
Engaging (manual transmission) .... 155
Reverse gear (selector lever) ........... 157
Reversing camera
Cleaning instructions ..................... 300
Function/notes ............................ .197
Switching on/off ........................... 198
Reversing feature
Panorama sliding sunroo f................ 92
Roller sunblind s............................... 93
Side windows ................................... 89
Reversing lamp
Changing bulb s.............................. 120
Reversing lamps
Display message ............................ 247
Roller sunblind
Opening/closing .............................. 94
Panorama sliding sunroo f................ 93
Roof carrier ........................................ 281
Roof lining and carpets (cleaning
instructions) ...................................... 303
Roof load (maximum) ........................ 362
Route (navigation)
see Route guidance (navigation)
Route guidance (navigation) ............ 219S
Safety Child restraint systems .................... 51
Children in the vehicle ..................... 51
Safety system
see Driving safety systems Seat
Adjusting (Performance Seat) ........ 103
Folding the backrest (rear com-
partment) forwards/back .............. 280
Seat belt
Switching belt adjustment on/off
(on-board computer) ...................... 230
Seat belts
Adjusting the driver's and front-
passenger seat belt ......................... 48
Adjusting the height ......................... 48
Belt force limite r.............................. 50
Belt tensioner .................................. 50
Cleaning ......................................... 303
Display message ............................ 243
Fastening ......................................... 48
Important safety guidelines ............. 46
Rear seat belt status indicator ......... 49
Releasing ......................................... 49
Warning lamp ................................. 263
Warning lamp (function) ................... 49
Seats
Adjusting (electrically) ................... 100
Adjusting (manually) ...................... 100
Adjusting the 4-way lumbar sup-
port ................................................ 102
Adjusting the head restraint .......... 101
Cleaning the cover ......................... 302
Correct driver's seat position ........... 98
Important safety notes .................... 99
Seat heating problem .................... 104
Storing settings (memory func-
tion) ............................................... 107
Switching seat heating on/of f....... 103
Sensors (cleaning instructions) ....... 300
Service
see ASSYST PLUS
Service Centre
see Qualified specialist workshop
Service menu (on-board com-
puter) .................................................. 225
Service products
Brake fluid ..................................... 360
Coolant (engine) ............................ 360
Engine oil ....................................... 359
Fuel ................................................ 355
Important safety notes .................. 354
Washer fluid ................................... 361 16
Index
Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variations are pos- sible. Note that your vehicle may not be
equipped with all of the functions descri-
bed. This is also the case for systems and
functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 24). Overview of climate control systems
Important safety notes
Observe the settings recommended on the
following pages. The windows could other-
wise mist up.
To prevent the windows from misting up:
R switch off climate control only briefly
R switch on air-recirculation mode only
briefly
R switch on the cooling with air dehumidifi-
cation function
R switch on the "demist windscreen" function
briefly, if required
THERMATIC automatic climate control/
THERMOTRONIC automatic climate control
regulates the temperature and the humidity
of the vehicle interior and filters out undesir-
able substances from the air.
THERMATIC automatic climate control/
THERMOTRONIC automatic climate control is only operational when the engine is running.
Optimum operation is only achieved with the
side windows and panorama sliding sunroof
closed.
The residual heat function can only be acti-
vated or deactivated with the ignition
switched off (Y page 137).
Always keep the ventilation flaps behind the
side panelling clear (Y page 120). Otherwise,
the vehicle will not be ventilated correctly. i
Ventilate the vehicle for a brief period
during warm weather, e.g. using the con-
venience opening feature (Y page 90). This
will speed up the cooling process and the
desired interior temperature will be
reached more quickly.
i The integrated filter filters out most par-
ticles of dust and soot and completely fil-
ters out pollen. With THERMOTRONIC auto- matic climate control, gaseous pollutants
and odours will also be reduced. A clogged
filter reduces the amount of air supplied to
the vehicle interior. For this reason, you
should always observe the interval for
replacing the filter, which is specified in the Service Booklet. As this depends on envi-
ronmental conditions, e.g. heavy air pollu-
tion, the interval may be shorter than statedin the Service Booklet.
i It is possible that the residual heat func-
tion may be activated automatically an hour
after the key has been removed in order to
dry the automatic climate control. The vehi- cle is then ventilated for 30 minutes. 126
Overview of climate control systemsClimate control
Control panel for THERMATIC automatic climate control
:
To set the temperature (Y page 132)
; To demist the windscreen (Y page 134)
= To set the air distribution (Y page 133)
? To activate/deactivate air-recirculation mode (Y page 136)
A To set the airflow (Y page 133)
B To activate/deactivate cooling with air dehumidification (Y page 130)
C To switch the rear window heating on/off (Y page 135)Notes on using THERMATIC automatic
climate control
automatic climate control The following contains notes and recommen-
dations on optimum use of THERMATIC auto-
matic climate control.
R Switch on the air-conditioning system by
turning control knob Aclockwise to the
desired position (except position 0).
R Set the temperature to 22 †.
R Recommendation for avoiding misted
windows at low exterior temperatures
or in rain: switch on the ¿cooling with
dehumidification function (Y page 130).
Set air distribution to ¯and if possible
switch off PandO (Ypage 133).
Deactivate air-recirculation mode e
(Y page 136). Set airflow control
Ato a setting between
3 and 6(Y page 133).
R Recommendation for rapid cooling or
heating of the vehicle interior: briefly set
airflow control Ato a setting between 3
and 6(Y page 133).
R Recommendation for a constant vehi-
cle interior temperature: set airflow con-
trol Ato a setting between 1and 3
(Y page 133).
R Recommendation for air distribution in
winter: select the Oand¯ settings
(Y page 133).
Recommendation for air distribution in
summer: select the PorP and
¯ settings (Y page 133).
R Only use the "Windscreen demisting" func-
tion briefly until the windscreen is clear
again. Overview of climate control systems
127Climate control
R
Only use air-recirculation mode briefly, e.g.
if there are unpleasant outside odours or
when in a tunnel. The windows could oth-
erwise mist up as no fresh air is drawn into
the vehicle in air-recirculation mode.
R Vehicles with COMAND Online: if you
change the settings of the climate control
system, the climate status display appears for three seconds at the bottom of the
screen in the COMAND display. See also
the separate COMAND Online operating
instructions. You will see the current set-
tings of the various climate control func-
tions.
ECO start/stop function During automatic engine switch-off, the cli-
mate control only operates at a reduced capa-
city. If you require the full climate control out-
put, you can switch off the ECO start/stop
function by pressing the ECO button
(Y page 151). 128
Overview of climate control systemsClimate control
Control panel for THERMOTRONIC automatic climate control (2-zone)
:
To set the temperature, left (Y page 132)
; To set climate control to automatic mode (Y page 132)
= To demist the windscreen (Y page 134)
? To increase the airflow (Y page 133)
A To set the air distribution (Y page 133)
B Display
C To activate/deactivate air-recirculation mode (Y page 136)
D To switch climate control on/off (Y page 130)
E To set the temperature, right (Y page 132)
F To activate/deactivate the residual heat function (Y page 137)
G To activate/deactivate cooling with air dehumidification (Y page 130)
H To reduce the airflow (Y page 133)
I To switch the rear window heating on/off (Y page 135)
J To switch the ZONE function on/off (Y page 133)Notes on using THERMOTRONIC auto-
matic climate control
Automatic climate control The following contains instructions and rec-
ommendations to enable you to get the most
out of your THERMOTRONIC automatic cli-
mate control.
R Activate climate control using the Ãand
¿ buttons. The indicator lamps in the
à and¿ buttons light up.
R Set the temperature to 22 †. R
Only use the "Windscreen demisting" func-
tion briefly until the windscreen is clear
again.
R Only use air-recirculation mode briefly, e.g.
if there are unpleasant outside odours or
when in a tunnel. The windows could oth-
erwise mist up as no fresh air is drawn into the vehicle in air-recirculation mode.
R Use the ZONE function to adopt the tem-
perature settings on the driver's side for
the front-passenger side as well. The indi-
cator lamp in the ábutton goes out. Overview of climate control systems
129Climate control
R
Use the residual heat function if you want to
heat or ventilate the vehicle interior when
the ignition is switched off. The residual
heat function can only be activated or deac- tivated with the ignition switched off.
R Vehicles with COMAND Online: if you
change the settings of the climate control
system, the climate status display appears for three seconds at the bottom of the
screen in the COMAND display. See also
the separate COMAND Online operating
instructions. You will see the current set-
tings of the various climate control func-
tions.
ECO start/stop function During automatic engine switch-off, the cli-
mate control only operates at a reduced capa- city. If you require the full climate control out-
put, you can switch off the ECO start/stop
function by pressing the ECO button
(Y page 151). Operating the climate control system
Switching climate control on/off
General notes When the climate control is switched off, the
air supply and air circulation are also
switched off. The windows could mist up.
Therefore, only switch off climate control
briefly.
THERMATIC automatic climate control X
Turn the key to position 2in the ignition
lock (Y page 147).
X To switch on: turn controlAclockwise to
the desired position (except position 0)
(Y page 127).
X To switch off: turn controlAanti-clock-
wise to position 0(Y page 127). THERMOTRONIC automatic climate
control X
Turn the key to position 2in the ignition
lock (Y page 147).
X To activate: press theÃbutton.
The indicator lamp in the Ãbutton lights
up. Airflow and air distribution are set to
automatic mode.
or X Press the ^button.
The indicator lamp in the ^button goes
out. The previous settings are reactivated.
X To deactivate: press the^button.
The indicator lamp in the ^button lights
up.
i THERMOTRONIC automatic climate con-
trol: switch on climate control primarily
using the Ãbutton. Activating/deactivating the cooling
with air dehumidification function
General notes If you deactivate the "Cooling with air-dehu-
midification" function, the air inside the vehi-
cle will not be cooled. The air inside the vehi- cle will also not be dehumidified. The win-
dows can mist up more quickly. Therefore,
only deactivate the "Cooling with air-dehu-
midification" function briefly.
The "Cooling with air dehumidification" func-
tion is only available when the engine is run-
ning. The air inside the vehicle is cooled and
dehumidified according to the temperature
selected.
Condensation may drip from the underside of the vehicle when cooling mode is active. Thisis normal and not a sign that there is a mal-
function. 130
Operating the climate control systemClimate control
Setting the air distribution
THERMATIC automatic climate control Air distribution settings
¯
Directs the airflow through the demis-
ter vents
P Directs the airflow through the centre
and side air vents
O Directs the airflow through the foot-
well air vents
i You can also activate several of the air
distribution settings simultaneously. In
order to do this, press several of the air
distribution buttons. The air is then routed
through different air vents.
Setting the air distribution
X Turn the key to position 2in the ignition
lock (Y page 147).
X Press one or more of the P,O, ¯
buttons.
The corresponding indicator lamp comes
on.
THERMOTRONIC automatic climate
control Air distribution settings
¯
Directs the airflow through the demis-
ter vents
P Directs the airflow through the centre
and side air vents
O Directs the airflow through the foot-
well air vents
S Directs airflow through the centre and
side air vents as well as the footwell air
vents 10
b Directs the airflow through the centre
and side air vents as well as the demis-
ter vents 10
a Directs the airflow through the foot-
well and demister vents i
Regardless of the air distribution setting,
airflow is always directed through the side
air vents. The side air vents can only be
closed if the adjusters are turned clockwise until they engage.
Setting the air distribution
X Turn the key to position 2in the ignition
lock (Y page 147).
X Press the ÉorË button repeatedly
until the desired symbol appears in the dis- play. Setting the airflow
THERMATIC automatic climate control X
Turn the key to position 2in the ignition
lock (Y page 147).
X To increase/reduce: turn controlA
clockwise or anti-clockwise (Y page 127).
THERMOTRONIC automatic climate
control X
Turn the key to position 2in the ignition
lock (Y page 147).
X To increase/reduce: press theKor
I button. Switching the ZONE function on/off
This function is only available with
THERMOTRONIC automatic climate control.
X To activate: press theábutton.
The indicator lamp in the ábutton lights
up.
The temperature setting for the driver's
side is not adopted for the front-passenger
side.
X To deactivate: press theábutton.
The indicator lamp in the ábutton goes
out.
10 Only for certain countries. Operating the climate control system
133Climate control
The temperature setting for the driver's
side is adopted for the front-passenger
side.
Demisting the windscreen
You can use this function to defrost the wind-
screen or to demist the inside of the wind-
screen and the side windows.
i You should only select the "Windscreen
demisting" function until the windscreen is
clear again.
X Turn the key to position 2in the ignition
lock (Y page 147).
X To activate: press the¬button.
The indicator lamp in the ¬button lights
up.
The climate control system switches to the
following functions:
R high airflow
R high temperature
R air distribution to the windscreen and
front side windows
R air-recirculation mode off
i The "Windscreen demisting" function
automatically sets the blower output to the optimum demisting effect. As a result, the
airflow may increase or decrease automat-
ically after the button is pressed.
i You can adjust the blower output man-
ually while the "Windscreen demisting"
function is in operation:
R THERMATIC automatic climate control:
turn airflow control Aclockwise or anti-
clockwise (Y page 127).
R THERMOTRONIC automatic climate con-
trol: press the óorô button.
X To deactivate: press the¬button.
The indicator lamp in the ¬button goes
out. The previous settings are reactivated.
Air-recirculation mode remains deactiva-
ted.
or X
THERMOTRONIC automatic climate con-
trol: press the Ãbutton.
The indicator lamp in the ¬button goes
out. Airflow and air distribution are set to
automatic mode.
or X THERMATIC automatic climate control:
turn temperature control :clockwise or
anti-clockwise (Y page 127).
THERMOTRONIC automatic climate con-
trol: turn temperature control :orE
clockwise or anti-clockwise (Y page 129). Demisting the windows
Windows misted up on the inside THERMATIC automatic climate control
X Activate the ¿"Cooling with air dehu-
midification" function.
X If the windows continue to mist up, activate
the ¬ "Windscreen demisting" function.
i You should only select this setting until
the windscreen is clear again.
THERMOTRONIC automatic climate con-
trol
X Activate the ¿"Cooling with air dehu-
midification" function.
X Activate automatic mode Ã.
X If the windows continue to mist up, activate
the ¬ "Windscreen demisting" function.
i You should only select this setting until
the windscreen is clear again.
Windows misted up on the outside X
Activate the windscreen wipers.
X Set the air distribution to PorO.
i You should only select this setting until
the windscreen is clear again. 134
Operating the climate control systemClimate control