The function LEAVING HOME ensures that the vehicle's environment is illumi-
nated after unlocking the vehicle with the radio remote control unit.
The function switches the light on only if there is poorer visibility and the light
switch is in the position
.
Enabling / disabling and setting function
The functions and settings of the illumination time can be activated / deactiva-
ted via the MAXI DOT display in the menu items Coming Home
or
Leaving Home
» page 47 .
CAUTION
■
Poorer visibility is evaluated by a motor mounted below the windscreen in
the holder of the interior mirror sensor. Do not attach any stickers or similar
objects in front of the light sensor on the windscreen in order to avoid impair-
ing the function or its reliability.■
If this option is always enabled, then the battery is heavily loaded.
Hazard warning light system
Fig. 51
Button for hazard warning light
system
Read and observe on page 64 first.
The hazard warning lights make other road users aware of your vehicle.
The function switches on all indicators.
Switching on/off
›
Press the button
» Fig. 51 .
When you turn it on the warning light
flashes in the button and at the same
time the warning lights
in the instrument cluster.
The hazard warning light system can also be operated if the ignition is switch-
ed off.
If one of the airbags is deployed, the hazard warning light system will switch
on automatically.
When the hazard warning system is on and the indicator light is switched on
(e.g. when turning), the hazard warning lights are switched off temporarily and
only the turn signal flashes on the relevant side of the vehicle.
Parking lights
Read and observe
on page 64 first.
The side light is provided for lighting of the parked vehicle.
The function switches on the side lights.
Switching on the side light on one side
›
Switch off the ignition.
›
Press the control lever to position
A
or
B
as far as the stop
» Fig. 48 on
page 65 .
The parking lights on the right or left side of the vehicle are turned on.
Switching on the side light on both sides
›
With the ignition switched on turn the light switch to position .
›
Switch off the ignition.
›
Lock the vehicle.
After pulling out the ignition key and opening the driver's door, an audible
warning sounds.
After a few seconds or after closing the driver's door, the audible alarm is
turned off, but the parking lights will remain switched on.
CAUTION
■ Turning on the parking light means the battery is heavily loaded.■The parking light cannot be turned off automatic due to the low battery
charge level.■
If the two-sided parking lights are switched on when the ignition is off, then
there is no automatic switching off of the parking light.
68Using the system
Open the air outlet vents 6›Turn the knob C between the end positions » Fig. 126.
Close air outlet vents 6›
Turn the knob
C
to the end position » Fig. 126.
Change air flow of air outlet vents 3 and 4
›
To change the height of the air flow, swivel the horizontal fins with the mov-
able adjuster elements
A
upward or downward » Fig. 125.
›
To adjust the lateral direction of the air flow, turn the vertical fins with the
movable adjuster element
A
to the left or to the right.
Change air flow of air outlet vents 6
›
To change the height of the air flow, swivel the horizontal fins with the verti-
cal adjuster elements
C
upward or downward » Fig. 126.
›
To adjust the lateral direction of the air flow, turn the vertical fins with the
horizontal movable adjuster element
D
to the left or to the right.
An overview of the available settings for adjusting the direction of the air
outlet
Set the direction of the air outletActive air outlet nozzles » Fig. 125 and
» Fig. 126 1. 2 . 41. 2 . 4 . 5 . 7 3. 4 . 64 . 5 . 7
CAUTION
To ensure that the heating, the manual air conditioning and the Climatronic
systems work properly, do not block up the air outlet vents with any objects.
Note
The air outlet vents 6 » Fig. 126 are only fitted on vehicles with the higher cen-
tre console.Auxiliary heating (auxiliary heating and ventilation)
Introduction
This chapter contains information on the following subjects:
Switching on and off directly
110
System settings
110
Radio remote control
111
Functional requirements of the auxiliary heating (aux. heating and ventilation) The charge state of the vehicle battery is sufficient.
The fuel supply is adequate (the warning light is not illuminated in the
instrument cluster).
Aux. heating
The auxiliary heating can be used when both when stationary, when the en-
gine is switched off, to preheat the vehicle and also while driving (e.g. during
the heating phase of the engine).
The auxiliary heating warms up the coolant by combusting fuel from the vehi-
cle tank. This heats the air flowing into the passenger compartment (if the
blower is turned on).
The auxiliary heating also warms up the engine.
The heater is switched on or off automatically depending on the ambient con-
ditions to give the best possible conditions for the engine running and the in-
terior heating.
For vehicles with gasoline engines, the automatic switching on and off of the
heater can be disabled in a specialist workshop.
Auxiliary ventilation
The auxiliary ventilation enables fresh air to flow into the vehicle interior by
switching off the engine, whereby the interior temperature is effectively de-
creased (e.g. with the vehicle parked in the sun).
109Heating and ventilation
WARNING■The auxiliary heating (auxiliary heating and ventilation) (hereinafter refer-
red to as aux. heating) must never be operated in closed rooms (e.g. garag-
es) – risk of poisoning!■
The auxiliary heating must not be allowed to run during refuelling – risk
of fire.
■
The exhaust pipe of the auxiliary heating is located on the underside of
the vehicle. If you want to use the heater, do not switch off the car in pla-
ces where the exhaust fumes can come into contact with flammable mate-
rials such as dry grass, undergrowth, leaves, spilled fuel etc. -. risk of fire.
CAUTION
■ The exhaust pipe of the auxiliary heating, which is located on the underside
of the vehicle, must not be clogged and the exhaust flow must not be blocked.■
If the auxiliary heating is running, the vehicle battery discharges. If the auxili-
ary heating and ventilation has been operated several times over a longer peri-
od, the vehicle must be driven a few kilometres in order to recharge the vehi-
cle battery.
■
The air inlet in front of the windscreen must be free (e.g. of ice, snow or
leaves) to ensure that the auxiliary heating operates properly.
Note
■ The auxiliary heating only switches the blower on, if it has achieved a coolant
temperature of approx. 50 °C.■
At low outside temperatures, this can result in a formation of water vapour in
the area of the engine compartment. This is quite normal and is not an operat-
ing problem.
■
So that warm air can flow into the vehicle interior after switching on the aux.
heating, you must maintain the comfort temperature normally selected by you,
leave the fan switched on and leave the air outlet vents in open. It is recom-
mended to put the air flow in the position
or
.
Switching on and off directlyFig. 127
Button for switching on/off the system directly on the operating
part of the air conditioning/Climatronic
Read and observe
and on page 110 first.
The aux. heating can be directly switched on or off at any time using the sym-
bol key
» Fig. 127 on the operating part of the air-conditioning system, or the
Climatronic or via the radio remote control » page 111.
If the auxiliary heating has not already been switched off, it switches off auto-
matically after the running time set in the
Running time
menu.
After switching off the auxiliary heating, the coolant pump still runs for a short
period.
System settings
Read and observe
and on page 110 first.
The following menu items can be selected from the
Aux. heating
menu item in
the MAXI DOT display (depending on the vehicle equipment). ■
Day of the wk.
- set the current day of the week
■
Running time
- Set the required running time in 5 minute increments. The run-
ning time can be 10 to 60 minutes.
■
Mode
- Set the desired heating/ventilation mode
■
Starting time 1
,
Starting time 2
,
Starting time 3
- for each pre-set time, the day and
the time (hour and minute) can be set for switching on the auxiliary heating.
An empty position can be found between Sunday and Monday when select-
ing the day. If this empty position is selected, the activation is performed
without taking into account the day.
■
Activate
- Activate pre-set mode
110Using the system
■Deactivate - Deactivate pre-set mode
■Factory setting.
- Restore factory setting
■
Back
- return to main menu.
Only one programmed pre-set time can be active.
The last programmed pre-set time remains active.
After the auxiliary heating activates at the set time, it is necessary to pre-set a time again.
If the pre-set menu is closed by selecting the
Back
menu item or if no changes
are made on the display for more than 10 seconds, the set values are stored,
but the pre-set time is not activated.
An indicator light on the button is illuminated when the system is running.
The running system deactivates after expiration of the operating period or can
be deactivated earlier by pressing the button to directly switch on/off the aux-
iliary heating or by using the radio remote control.
Radio remote control
Fig. 128
Radio remote control
Read and observe and on page 110 first.
Using the radio remote control, the aux. heating and ventilation (hereinafter
referred to as heater) can be switched on or off.
Function and description of the radio remote control » Fig. 128
Aerial
Warning light
Switch on the auxiliary heating
Switch off the auxiliary heating
ABTo switch the auxiliary heating on or off, hold the remote control vertically,
with the aerial A » Fig. 128 pointing upwards. The antenna must not be cov-
ered with the fingers or the palm of the hand during this process.
The auxiliary heating can only be switched on/off safely using the radio re-
mote control, if the distance between the radio remote control and the vehicle
is at least 2 m.
After pressing the button, the warning light in the remote control gives the
user different kinds of feedback.Display warning light B » Fig. 128MeaningLights up green for around 2 seconds.The auxiliary heating has been
switched on.Lights up red for around 2 seconds.The auxiliary heating has been
switched off.Slowly flashes green for around 2 sec-
onds.The ignition signal was not received.Quickly flashes green for around 2
seconds.The auxiliary heating is blocked, e. g
because the tank is nearly empty or
there is a fault in the auxiliary heat-
ing.Flashes red for around 2 seconds.The switch off signal was not re-
ceived.Lights up orange for around 2 sec-
onds, then green or red.The battery is weak, however the
switching on or off signal was re-
ceived.Lights up orange for around 2 sec-
onds, then flashes green or red.The battery is weak, however the
switching on or off signal was not re-
ceived.Flashes orange for around 5 seconds.The battery is discharged, however
the switching on or off signal was not
received.
Replace the battery » page 193.
111Heating and ventilation
CAUTION■The radio remote control comprises electronic components and must there-
fore be protected against water, severe impacts and direct sunlight.■
When the battery is fully charged, the range of the remote control is a few
hundred metres. Obstacles between the radio remote control and the vehicle,
bad weather conditions and a weaker battery can clearly reduce the range.
112Using the system
WARNING■The use of open flames and light should be avoided.■Smoking and radio triggering activities should be avoided.■
Never use a damaged vehicle battery – risk of explosion!
■
Never charge a frozen or thawed vehicle battery – risk of explosion and
chemical burns!
■
Replace a frozen vehicle battery.
■
Never jump-start vehicle batteries with an electrolyte level that is too low
– risk of explosion and caustic burns.
CAUTION
■ Improper handling of the vehicle battery may cause damage.■Ensure that battery acid does not come into contact with the bodywork – risk
of damage to the paintwork.■
If the vehicle has not been driven for more than 3 to 4 weeks, the battery will
discharge. Prevent the battery from discharging by disconnecting the battery's
negative terminal
or continuously charging the battery with a very low
charging current.
■
Do not place the battery in direct daylight in order to protect the vehicle bat-
tery housing from the effects of ultra-violet light.
■
If the vehicle is frequently used for making short trips, the vehicle battery
will not have time to charge up sufficiently and may discharge.
Note
■ We recommend having all work on the vehicle battery carried out by a spe-
cialist garage.■
You should replace batteries older than 5 years.
Opening the coverFig. 172
Polyester vehicle battery cover / plastic vehicle battery cover
Read and observe
and on page 172 first.
The battery is located in the engine compartment - in some models, under-
neath a polyester cover » Fig. 172.
›
Open the battery cover in the direction of the arrow » Fig. 172-
or press the
catch on the side of the battery cover in the direction of the arrow » Fig. 172-
.
›
fold the cover up and remove.
The battery cover is installed in reverse order.
Checking the battery electrolyte level
Fig. 173
Vehicle battery: Electrolyte level
indicator
Read and observe and on page 172 first.
On vehicles with a vehicle battery fitted with a colour indicator, the electrolyte
level can be determined by looking at the change in the colour of this display.
173Inspecting and replenishing
CAUTIONOn vehicles with the START / STOP system or additional heating (auxiliary
heating), do not connect the pole terminal of the charger directly to the nega-
tive terminal of the vehicle battery but only to the engine earth » page 189.
Replacing
Read and observe
and on page 172 first.
The new vehicle battery must have the same capacity, voltage, current and the
same size as the original Battery. Suitable vehicle battery types can be pur-
chased from a specialist garage.
We recommend you have the battery replaced by a specialist garage.
Disconnecting and reconnecting
Read and observe
and on page 172 first.
Disconnecting
›
Switch off the ignition.
›
Disconnect the negative terminal first and then the positive
terminal of
the battery.
Connecting
›
Connect the positive terminal first, then the negative
battery terminal.
After disconnecting and re-connecting the vehicle battery, the following func-
tions or devices are partially or completely inoperative.
Function / deviceOperating measureElectrical power windows» page 61Panorama sliding/tilting roof» page 62Sun screen» page 63RadioEnter code » Owner's Manual
RadioTime settings» page 30CAUTION■ Disconnect the vehicle battery only with the ignition turned off - there is a
risk of damaging the electrical system of the vehicle.■
Under no circumstances must the battery cables be connected incorrectly –
risk of a cable fire.
Note
■ After disconnecting and re-connecting the vehicle battery, we recommend
having the vehicle checked by a specialist to ensure that the full functionality
of all electrical systems is guaranteed.■
The data of the multi-function display will be reset.
Automatic load deactivation
Read and observe
and on page 172 first.
The vehicle's electrical system automatically prevents the battery from dis-
charging when the battery is being heavily used. This manifests itself by the
following. ▶ The idling speed is raised to allow the generator to deliver more electricity to
the electrical system.
▶ Where necessary, large convenience consumers such as seat heaters and
rear window heaters have their power limited or are shut off completely in
the event of an emergency.
CAUTION
■ Despite such intervention by the vehicle electric system management, the
vehicle battery may be drained. For example, when the ignition is switched on
a long time with the engine turned off or the side or parking lights are turned
on during longer parking.■
Consumers that are supplied via a 12-V power socket can cause the vehicle
battery to discharge when the ignition is switched off.
Note
Driving comfort is not impaired by consumers being deactivated. The driver is
often not aware of it having taken place.175Inspecting and replenishing
Replacing the battery in the remote control keyFig. 192
Remove cover/take out battery
Read and observe
on page 192 first.
The battery change is carried out as follows.
›
Flip out the key.
›
Press off the battery cover
A
» Fig. 192 with your thumb or using a flat
screwdriver in the region of the arrows
1
.
›
Remove the discharged battery from the key by pressing the battery down in
the region of the arrow
2
.
›
Insert the new battery.
›
Insert the battery cover
A
and press it down until it clicks audibly into place.
The key has to be synchronised if the vehicle cannot be unlocked or locked
with the remote control key after replacing the battery » page 193.
Synchronising the remote control
Read and observe
on page 192 first.
If the vehicle does not unlock when pressing the remote control, the key may
not be synchronised. This can occur when the buttons on the remote control
key are actuated a number of times outside of the operative range of the
equipment or the battery in the remote control key has been replaced.
Synchronise the key as follows.
›
Press any button on the remote control key.
›
Unlock the door with the key in the lock cylinder within 1 minute of pressing the button.
replace battery in the remote control the auxiliary heating
(auxiliary heating)Fig. 193
Radio remote control: Battery
cover
Read and observe on page 192 first.
The battery is located under a cover on the back of the radio remote control » Fig. 193 .
›
Insert a flat, blunt object, such as a coin, into the gap of the battery cover.
›
Turn the cover against the direction of the arrow up to the mark to open the
cover.
›
Replace the battery.
›
Return the battery cover.
›
Turn the cover in the direction of the arrow up to the initial marking, engage.
replace batteries of the removable lights
Fig. 194
Taking out the lamp
Read and observe on page 192 first.
The battery change is carried out as follows.
›
Take out the light in the direction of arrow » Fig. 194.
193Emergency equipment and self-help