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When the red indicator lamp in the
0084
button flashes, the receiver in the vehicle
is ready for synchronizing.
X Press and hold the 00D0remote control
button until indicator lamp 0043lights up red.
If there is an active connection between the
remote control and the receiver, indicator
lamp 0043flashes alternately red and green.
The remote control is in synchronizing
mode.
i If you press the 00D0button again on the
remote control after starting synchroniza-
tion, you will only synchronize this remote
control unit with the receiver. Any other
remote control units that were synchron-
ized will be cleared. Indicator lamp 0043
flashes alternately red and green (very
slowly).
X Press the 0070button on the remote
control.
During data transmission, indicator
lamp 0043lights up red.
When remote control indicator lamp 0043
emits two long green flashes, the selected
operating time is synchronized. The indica-
tor lamp in the 0084auxiliary heating but-
ton goes out. Operation with the timer
Important safety notes This is only for vehicles with a hot-water aux-
iliary heater.
G
DANGER
If a switch-on time has been selected, the
auxiliary heating switches on automatically.
R If the ventilation is insufficient, poisonous
exhaust gases can collect, in particular car-
bon monoxide. This is the case in enclosed spaces, for example. There is a risk of fatal
injuries.
R If highly flammable substances or flamma-
ble materials are nearby, there is a risk of
a risk of fire and explosion.
Always deactivate the preselected switch-on
times if you stop the vehicle in such or similar
situations.
Use the timer to:
R activate/deactivate immediate heating
mode
R set up to three switch-on times
R set the operating duration from 10to
120 minutes or to continuous operation
R set the heating level (preselected temper-
ature) to a range between 10 and 30
Timer overview Timer above the overhead control panel
0043
Program column
0059 Sets preselection memory 1 – 3
(Y page 129)
Sets weekday (Mon. – Sun.)
(Y page 128)
0044 Menu bar
0084 Activates/deactivates immediate
heating mode (Y page 128)
0045 Sets the program times
(Y page 129)
0045 Sets the day, time and the operating
duration (Y page 128)
00D1 Sets the heating level
(Y page 130) Operating the auxiliary heating system
127Climate control Z
Page 132 of 338

If the
0084 symbol in the status bar is shown:
X Press the 00CFor00DB button until the
off
off message in the display panel is shown.
X Press the 0070button.
The preselection time is deactivated. The
time is shown.
Setting the heating level You can set the heating level to a range
between 10 and 30.
The heating level corresponds to a preselec-
tion temperature for the vehicle interior. This
is a guide value and may, depending on the
outside temperature, differ from the actual
vehicle interior temperature.
X Press the 00CFor00DB button until the
00D1 symbol in the menu bar flashes.
X Press the 0070button.
The heating level display flashes.
X Using the 00CFand00DB buttons, set the
desired heating level to a range between 10
and 30.
X Press the 0070button.
The heating level is set and the 0084sym-
bol appears. Switching the heater booster function
on/off Vehicles with auxiliary heating Vehicles with heater booster function
At outside temperatures of up to 39 ‡
(4†)
the fuel-fired heater booster system heats the
vehicle interior as quickly as possible when
the engine is running.
The auxiliary heating automatically switches
to heater booster mode after the engine is
started.
At an outside temperature above 39 ‡ (4†)
the auxiliary heating system and the heater
booster function switch off automatically.
If you switch off the engine without switching
off the heater booster function, the system
will be switched on the next time the engine
is started (memory function).
i Switch the auxiliary heating on or off with
the 0084 button (Y page 124).
X To switch on/off: press the006Aswitch.
If the indicator lamp in the button lights up,
the heater booster function is switched on.
After switching off, the auxiliary heating oper-
ates for about another 2 minutes and then
switches off automatically. Replacing the remote control battery
G
WARNING
Batteries contain toxic and corrosive substan-
ces. If batteries are swallowed, it can result in
severe health problems. There is a risk of fatal
injury.
Keep batteries out of the reach of children. If
a battery is swallowed, seek medical attention
immediately. 130
Operating the auxiliary heating systemClimate control
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Observe the following when towing a trailer:
R Practice driving around bends, stopping
and backing up at a place where there is no
traffic. This enables you to gain experience
and get used to the new handling charac-
teristics.
R Before driving, check:
-that the trailer tow hitch and ball cou-
pling are secure
- that the safety switch for a braked trailer
is functioning properly
- that the safety chains are secure and not
damaged
- that the electrical connections are
secure
- that the lights are working
- that the wheels are in good order and the
tire pressure is correct
R Adjust the exterior mirrors to provide an
unobstructed view of the rear section of the
trailer.
R If the trailer has electronically controlled
brakes, pull the vehicle/trailer combina-
tion away carefully. Brake manually using
the brake controller and check that the
brakes are working.
R Secure the load on the trailer according to
the applicable specifications and current
standards on securing loads
(Y page 244).
R When driving with a trailer, check at regular
intervals that the load is secured and that
the brakes and lights are working.
R Bear in mind that the handling will be less
stable when towing a trailer than when driv-
ing without one. Avoid sudden steering
movements.
R The vehicle/trailer combination is heavier,
accelerates more slowly and has a
decreased gradient climbing capability and
a longer braking distance.
It is more susceptible to crosswinds and
requires cautious steering.
R If possible, do not brake suddenly, but
rather moderately at first so that the trailer can activate its brakes. Then increase the
force on the brake pedal.
R If the automatic transmission repeatedly
shifts between gears when driving on
inclines, restrict the shift range. Select shift
range 4,3,2or 1.
Driving in a low gear and at a low speed
reduces the risk of damaging the engine.
R When driving on a downhill gradient, shift
to a low gear and take advantage of the
engine's braking effect.
Avoid continuous brake application as this
may overheat the vehicle brakes and, if
installed, the trailer brakes.
R If the coolant temperature increases dra-
matically while the air-conditioning system
is switched on, switch off the air-condition-
ing system.
Coolant heat can also be dissipated by
switching the airflow and the temperature
of the heater/air conditioning to the maxi-
mum level. Open the windows if necessary.
R When overtaking, pay particular attention
to the extended length of your vehicle/
trailer combination.
Due to the length of your vehicle/trailer
combination you need an additional dis-
tance before you can return to your original
lane. Uncoupling a trailer
G
WARNING
If you uncouple a trailer with the overrun
brake engaged, you could trap your hand
between the vehicle and the trailer drawbar.
There is a risk of injury.
Do not uncouple a trailer if the overrun brake
is engaged.
! Do not disconnect a trailer with an
engaged overrun brake. Otherwise, your
vehicle could be damaged by the rebound-
ing of the overrun brake. Towing a trailer
177Driving and parking Z