Air conditioning
175highly inflammable material such as fuels
could be ignited. Operating the auxiliary
heating is thus prohibited at filling stations
or when your vehicle is being refuelled. You
must therefore switch off the auxiliary heat-
ing at filling stations.
The auxiliary heating heats the air in the vehi-
cle interior to the set temperature without
using the heat of the running engine. The aux-
iliary heating is operated using fuel directly
from the vehicle's fuel tank. For this reason,
the tank content must be at least at reserve
fuel level to ensure that the auxiliary heating
functions.
The auxiliary heating/ventilation automati-
cally adjusts to changes in temperature and
weather conditions. For this reason, the aux-
iliary heating could switch from ventilation
mode to heating mode or from heating mode
to ventilation mode.
You cannot use the auxiliary ventilation to
cool the vehicle interior to a temperature
lower than the outside temperature.
Before activating X
Turn the key to position 2in the ignition
lock.
X Set the temperature. The auxiliary heating/ventilation can be acti-
vated even when the air conditioning is being
controlled manually. Optimum comfort can
be attained when the system is set to auto-
matic mode. Set the temperature to 22 †.
The auxiliary heating/ventilation can be acti-
vated or deactivated using the remote control
or the button on the centre console.
The on-board computer can be used to spec-
ify up to three departure times, one of which
may be preselected (Y page 135).
Switching the auxiliary heating/venti-
lation on/off using the centre console
button Centre console
1
X Auxiliary heating/ventilation The colours of the indicator lights on the but-
ton have the following meanings:
Blu
eA uxiliary ventilation activated
Red Auxiliary heating activated
Yello wDeparture time preselected
(Y page 134)
Activating the auxiliary heating/ventila-
tion
If the key is in position 1or 2:
X Press and hold the Xbutton for at least
two seconds.
The red or blue indicator lamp in the X
button lights up.
If the key is removed or in position 0:
X Briefly press the Xbutton.
The red or blue indicator lamp in the X
button lights up.
Deactivating the auxiliary heating/venti-
lation
X Briefly press the Xbutton.
The red or blue indicator lamp in the X
button goes out. Controls
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Air conditioning
176
Switching the auxiliary heating/venti-
lation on/off using the remote control Your vehicle comes with one remote control.
You may use two additional remote controls
for your vehicle. For further information, con-
sult a qualified specialist workshop, e.g. a
Mercedes-Benz Service Centre.
The remote control has a maximum range of
approximately 300 metres. This range may be
reduced by:
R sources of radio interference
R solid objects between the remote control
and the vehicle
R the remote control being in an unfavoura-
ble position in relation to the vehicle
R transmitting from an enclosed space
i The optimum range can be achieved if you
hold the remote control vertically, pointing
upwards when you press one of the but-
tons.
i A battery symbol appears in the display
when the batteries in the remote control
are low. Replace the remote control bat-
teries (Y page 305). i
More information about the auxiliary
heating can be found in the "Practical
advice" section (Y page 300). Auxiliary heating remote control
1
Display
2 To check the status
3 OFF – to deactivate auxiliary heating/
ventilation
4 ON – to activate auxiliary heating/venti-
lation
5 To check the status
Using the remote control, you can:
R activate or deactivate the auxiliary heat-
ing/ventilation
R check the status of the auxiliary heating/
ventilation Activating the auxiliary heating/ventila-
tion
X
Press the ONbutton.
The following messages can appear in the
display: Display Meaning
The auxiliary heating/
ventilation is activated.
A malfunction has occur-
red in the auxiliary heat-
ing/ventilation. The
heating/ventilation
function selected by the
system is not available.
The vehicle battery is not
charged sufficiently or
the system is faulty.Cont
rols
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Features
211Garage door opener*
The remote control integrated in the rear-view
mirror allows you to operate up to three dif-
ferent door and gate systems.
i The garage door opener is only available
for certain countries. Observe the legal
requirements in all countries concerned.
The HomeLink ®
garage door opener is
compatible with most European garage and
gate opener drives. More information on
HomeLink ®
and/or compatible products is
available from:
R any Mercedes-Benz Service Centre
R the HomeLink ®
hotline
(0) 08000 466 354 65 (free of charge) or
+49 (0) 6839 907-27 7(at a charge)
R the internet: www.homelink.com Remote control in the rear-view mirror
1
Indicator lamp
2 Transmitter button
3 Transmitter button
4 Transmitter button G
Risk of accident
Only press the transmitter button on the
integrated remote control if there are no
persons or objects present within the
sweep of the garage door. Persons could
otherwise be injured as the door moves.
Programming the remote control i
You will achieve the best results by insert-
ing new batteries in the garage door's
remote control before programming it. X
Erase the memory of the integrated remote
control (Y page 212) before programming
it for the first time.
X Turn the key to position 2in the ignition
lock.
X Press and hold one of transmitter buttons
2 to4 on the integrated remote control.
Indicator lamp 1starts to flash after a
short while. It flashes about once a second.
i Indicator lamp 1flashes immediately
the first time the transmitter button is pro-
grammed. If this transmitter button has
already been programmed, indicator
lamp 1will only start flashing at a rate of
once a second after 20 seconds have
elapsed.
X Keep the transmitter buttons depressed.
X Point the garage door's remote control with
the transmitter towards the left-hand side
of the rear-view mirror from a distance of 5
to 20 cm.
i The distance between the garage door's
remote control and the integrated garage
door opener depends on the system of the
garage door drive. You might require sev-
eral attempts. You should test every posi- Controls
* optional
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Features
212tion for at least 20 seconds before trying
another position.
X Keep the transmitter button on the garage
door's remote control depressed until indi-
cator lamp 1starts to flash rapidly.
The programming was successful if indica-
tor lamp 1flashes rapidly.
X Release the transmitter buttons on the
garage door's remote control and the inte-
grated remote control.
If indicator lamp 1goes out after approxi-
mately 20 seconds and did not flash rapidly
before this:
X Release the transmitter buttons on the
integrated and portable remote controls.
X Repeat the programming procedure. At the
same time change the distance between
the garage door's remote control and the
transmitter buttons in the rear-view mirror.
i If the garage door system works with a
rolling code, after programming you must
synchronise the remote control integrated
in the rear-view mirror with the garage door
system receiver.
You will find further information in the
garage door opening system's operating
instructions, e.g. the sections on "Synchro-
nising the transmitter" or "Registering a new transmitter". You can also call the hot-
line mentioned above.
Opening or closing the garage door Once programmed, the integrated remote
control will assume the function of the garage
door system's remote control. Please read
the operating instructions for the garage door
system.
X
Turn the key to position 2in the ignition
lock.
X Press the transmitter button on the rear-
view mirror that you have programmed to
operate the garage door.
Garage door system with fixed code: indi-
cator lamp 1lights up continuously.
Garage door system with rolling code: indi-
cator lamp 1flashes briefly and then lights
up for approximately two seconds. This is
repeated for up to 20 seconds.
i The transmitter will transmit a signal for
as long as the transmitter button is being
pressed. The transmission will be halted
after a maximum of 20 seconds and indi-
cator lamp 1will flash. Press the trans-
mitter button again if necessary. Clearing the remote control memory X
Turn the key to position 2in the ignition
lock.
X Press and hold transmitter buttons 2and
4 for approximately 20 seconds until indi-
cator lamp 1flashes rapidly.
The memory is cleared.
i You should clear the remote control mem-
ory before selling the vehicle. Compass*
In the AIRMATIC/Compass * menu
(Y page 128), the compass displays the com-
pass bearing of your direction of travel. You
will see N,NE, E,SE, S,SW, Wor NW in the multi-
function display.
To obtain an accurate display of your com-
pass bearing, the correct geographical zone
must be set. If necessary, the compass must
also be calibrated (Y page 215).
If the compass is not calibrated or is malfunc-
tioning due to external interference, you will
see the Compass – – – message in the dis-
play. Cont
rols
* optional
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Troubleshooting
298 KEYLESS GO*
Problem Possible cause/consequence Suggested solutions
You cannot lock or unlock the
vehicle using the KEYLESS GO
key. The KEYLESS GO key batteries
are discharged or nearly dis-
charged. X
Lock or unlock the vehicle using the remote control function of the
key. To do this, point the tip of the key at the driver's door handle
from close range and try to unlock or lock the vehicle again.
If this does not work:
X Unlock the vehicle using the emergency key element
(Y page 302).
X Check the KEYLESS GO key batteries (Y page 305) and replace
them if necessary (Y page 305). There is a fault with KEYLESS GO. X
Lock or unlock the vehicle using the remote control function of the
key. To do this, point the tip of the key at the driver's door handle
from close range and try to open the vehicle again.
X Have the KEYLESS GO key checked at a qualified specialist work-
shop. There is interference from a pow-
erful source of radio waves. X
Unlock the vehicle using the emergency key element
(Y page 302). The battery check lamp in the
KEYLESS GO key does not light
up when tested. The KEYLESS GO key batteries
are discharged. X
Change the batteries (Y page 305).Practical advice
* optional
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Troubleshooting
300 Auxiliary heating/ventilation*
Problem Possible cause/consequence Suggested solutions
The auxiliary heating is not work-
ing. The fuel level is down to the
reserve level. X
Refuel at the nearest filling station. The battery is not sufficiently
charged. X
Charge the battery. The auxiliary heating is faulty. X
Have the auxiliary heating checked at a qualified specialist work-
shop. The auxiliary heating cannot be
switched on or off using the
remote control. The remote control display shows
FAIL and the
¢symbol.
The signal transmission between
the remote control and the vehi-
cle is faulty. X
Change your position in relation to the vehicle, moving closer if
necessary.
X Make another attempt to switch the auxiliary heating on or off using
the remote control. The remote control display shows
FAIL and the
¡symbol.
There is not enough fuel in the
tank, or the auxiliary heating is
faulty. X
Refuel at the nearest filling station.
X Have the auxiliary heating checked at a qualified specialist work-
shop. Practical advice
* optional
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Changing the batteries
305Key or KEYLESS GO key*
Checking the batteries X
Press the jork button.
The batteries are in order if the battery
charge indicator lamp lights up briefly.
Changing the batteries You require two CR 2025 3 V cell batteries.
X
Remove the emergency key element from
the key (Y page 302). 1
Emergency key element
2 Battery tray X
Insert emergency key element 1into the
opening in the key and push in the direction
of the arrow.
Battery tray 2is released.
X Pull battery tray 2out of the key. 1
Batteries
X Remove old batteries 1from the battery
tray.
X Insert the new batteries beneath the con-
tact spring with the positive terminal facing
upwards. Use a lint-free cloth to do so.
X Push the battery tray back into the key
housing until the battery tray engages.
X Check the function of all key buttons on the
vehicle. Auxiliary heating* remote control
One 6V pin battery, type 2CR11108 is
required. 1
Battery
2 Battery cover
X Prise apart the side arms of battery cover
2 and slide off battery cover 2.
X Remove old battery 1.
X Insert the new battery. Observe the polarity
signs on the back of the remote control
when doing so.
X Slide battery cover 2back onto the
remote control.
X Use the remote control to check the vehi-
cle's auxiliary heating functions. Practical advice
* optional
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