ECO mode MERCEDES-BENZ S CLASS 2000 User Guide

156 Exterior lamp switch
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Exterior lamp switch
MOff
UAutomatic headlamp mode, see below.
CParking lamps (also side marker lamps, taillamps,
licence plate lamps, instrument panel lamps)
Canada only: When the engine is running, the low
beam is additionally switched on.
BParking lamps plus low beam or high beam
headlamps (combination switch pushed forward).ˆStanding lamps, right (turn left one stop)
‚Standing lamps, left (turn left two stops)
‡Front fog lamps (pull out one stop) with parking
lamps and/or low beam headlamps on. Green
indicator in lamp switch comes on.
†Rear fog lamp (pull out to second detent) in
addition to the front fog lamps. Yellow indicator in
lamp switch comes on.
Note:
With the electronic key removed and the driver’s door
open, a warning sounds if the vehicle’s exterior lamps
(except standing lamps) are not switched off.
Fog lamps will operate with the parking lamps and / or
the low beam headlamps on. Fog lamps should only be
used in conjunction with low beam headlamps. Consult
your State or Province Motor Vehicle Regulations
regarding allowable lamp operation.
Fog lamps are automatically switched off when the
exterior lamp switch is turned to position M or U.

158 Exterior lamp switch
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Daytime running lamp mode
Turn exterior lamp switch to positionM.
When the engine is running, the low beam headlamps
(includes parking lamps and license plate lamps) are
automatically switched on.
Canada only:
When shifting from a driving position to position “N”
or “P”, the low beam switches off (3 minutes delay).
For nighttime driving the exterior lamp switch should
be turned to position B to permit activation of the
high beam headlamps.
USA only:
The high beam headlamps can also be activated when
driving with the daytime running lamp mode activated
and exterior lamp switch in positionM.
See page 156 for notes on the exterior lamp switch.
To activate the daytime running lamp mode, see
“Individual settings” – “LIGHTING” on page 142.Night security illumination
When turning off the engine, the exterior lamps switch
on for added illumination, if they were previously
switched on (except in daytime running mode). After
the last door has been closed the lamp-on time period
commences.
The lamp-on time period for night security illumination
can be set at several different timed levels from 0 (off) to
60 seconds.
Notes:
Within 10 minutes after closing the last door the night
security illumination can be reactivated by opening a
door.
See “Individual settings” – “LIGHTING” on page 142 for
instructions on how to activate the function.
Deactivating night security illumination temporarily:
Turn the electronic key in starter switch to position 0
then to position 2 and back to position 0 again before
getting out of the vehicle. The night security
illumination will not be activated when the door is
opened.

165 Automatic climate control
Te ch n ica l
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cluster displayPractical hints Car care Index 1Center air outlet, left, adjustable
2Fixed air outlet, left
3Air volume control for left center air outlet
To open: Turn the thumbwheel upward.
■: The left center air outlet is fully open.
■■: The left center and fixed air outlets are
opened.
4Air temperature control
To lower temperature: Turn thumbwheel towards
the blue marking.
Automatic mode: Turn thumbwheel to position A.
The indicator lamp above the thumbwheel will
illuminate. The airflow and temperature for the
center air outlets are regulated automatically.
5Air volume control for right center air outlet.
To open: Turn the thumbwheel upward
■: The right center air outlet is fully open.
■■: The right center and fixed air outlets are
opened.6Center air outlet, right, adjustable
7Fixed air outlet, right
8Side defroster outlet, left and right, fixed
9Side air outlet, left and right, adjustable
10Air volume control for side air outlets
To open: Turn thumbwheel outwards
■: The side air outlet is fully opened.
■■: The side and door air outlets are opened.
11Door air outlet, left and right
12Display and controls
Note:
We recommend that the sliders for the air
outlets (1, 6, 9) be clicked to the automatic position to
provide practically draft free ventilation.

166 Automatic climate control
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Display and controls
1Defrosting
2Rear window defroster, see page 180
3Residual engine heat utilization, see page 174
4Automatic climate control on / off
5Air distribution, right (automatic, manual operation)
6Economy mode, see page 173
7Temperature control, right8Air volume (automatic, manual)
9Display
Depending on the ambient light conditions, the
figures on the display will be shown as dark figures
on a bright background (in daylight), or as bright
figures on a dark background (at night).
10Temperature control, left
11Air recirculation, see page 171
12Air distribution, left (automatic, manual operation)
13Activated charcoal filter
Important!
This vehicle is equipped with an air conditioning
system that uses R-134a (HFC: hydrofluorocarbon) as a
refrigerant. Repairs should always be performed by a
qualified technician, and refrigerant should be collected
in a recovery system for recycling.
1
2
3
4
6
7
10
11
13
12
98
5P83.40-0485-26

167 Automatic climate control
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cluster displayPractical hints Car care Index Automatic climate control
The system is always at operational readiness, except
when manually switched off.
The automatic climate control only operates with the
engine running.
The temperature selector should be left at the desired
temperature setting. The temperature selected is
reached as quickly as possible.
Th e system w il l not hea t or c ool a ny q uicker by setting a
higher or lower temperature.
The desired interior temperature and air distribution
can be selected separately for the left and right side of
the passenger compartment.
The automatic climate control removes considerable
moisture from the air during operation in the cooling
mode. It is normal for water to drip on the ground
through ducts in the underbody.
The air conditioning will not engage (no cooling) if the
economy mode S is selected, see page 173. Notes:
Do not obstruct the air flow by placing objects on the air
flow-through exhaust slots below the rear window.
Also keep the air intake grill in front of the windshield
free of snow and debris.
The storage compartment between the front seats can be
ventilated. See page 175 for notes on ventilating the
storage space under the armrest in the center console.
The air conditioner switches itself off for its own
protection if refrigerant is lost. No cooling will then take
place. Economy mode S cannot be switched off. Have
the air conditioner checked by a Mercedes-Benz Center
should this happen.
Dust filter
Nearly all dust particles and pollen are filtered out
before outside air enters the passenger compartment
through the air distribution system.

168 Automatic climate control
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Basic setting – automatic mode
There are three basic settings for the automatic mode:
•Automatic air volume control
•Automatic air outlet control, left and right
•Automatic air outlet control, center, see page 165
We recommend these settings to be used all year round.Air volume and distribution are controlled
automatically.
Set the temperature switches on the left and right to
72°F (22°C). This provides for comfortable conditions in
the vehicle.
Automatic airf low regulation:
Press the A on the air volume switch. The display shows
“AUTO”.
Automatic air distribution:
Press on both U knobs until they click in. The h,
j and k symbols will no longer be visible.
The economy mode and air recirculation functions will
be switched off. The automatic blower will be activated
at the same time.

170 Automatic climate control
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Defrosting
Press the P button. The display shows P.
The fan is set to a higher speed and the warm air is
directed to the defroster and windshield air outlets.
Pressing the switch again returns the system to the
previous setting.Windows fogged on the inside
Switch off the economy mode, if selected: Press
buttonS. The indicator lamp in the button will go
out.
Switch off air recirculation, if selected: Press
buttonO. The indicator lamp in the button will go
out.
Adjust left and right air outlets upwards.
Set blower to the maximum blower speed.
Increase temperature setting.
Open the side air outlets and direct them onto the side
windows.
P83.40-2009-21

171 Automatic climate control
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cluster displayPractical hints Car care Index Windshield fogged on the outside
Switch on the windshield wiper.
Press on both U buttons until they click in. The
h, j and k symbols will no longer be visible.
Air recirculation
Select air recirculation:
The indicator lamp in the O button is off.
Press button O briefly. The indicator lamp in the
button illuminates.
To switch off the air recirculation:
The indicator lamp in the O button is on.
Press button O briefly. The indicator lamp in the
button will go out.
Switching on air recirculation and activating
convenience closing:
The indicator lamp in the O button is off.
Press button O for more than 2 seconds, the side
windows and the sliding / pop-up roof will be closed. The
indicator lamp in the button lights up.
Switching off air recirculation and activating
convenience opening:The indicator lamp in the O button is on.
Press button O for more than 2 seconds, the side
windows and the sliding / pop-up roof return to the
position they were in before closing.
A window or the sliding / pop-up roof opened manually
after convenience closing will no longer be returned to
the position it was in before closing when convenience
opening is selected.
The system automatically switches from air
recirculation to fresh air:
•after 30 minutes if the outside temperature is above
about 40°F(5°C),
•after 5 minutes if the outside temperature is below
about 40°F(5°C),
•after 5 minutes if economy mode S is selected.
The system switches automatically to air recirculation at
high outside temperatures. A quantity of outside air is
added after about 30 minutes.
If the windows should fog up from the inside, switch
from recirculated air back to fresh air.

172 Automatic climate control
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Activated charcoal filter
An activated charcoal filter markedly reduces bad odors
and removes pollutants from air entering the passenger
compartment.
To select, press e button. The indicator lamp in the
button illuminates.
To cancel, press button. The indicator lamp in the button
goes out.
The system switches automatically to the air
recirculation mode, if the carbon monoxide (CO) or
nitrogen oxides (NO
X) concentration of the outside air
increases beyond a predetermined level.
The automatic air recirculation mode does not function
if economy mode S is selected or if the outside
temperature has fallen below 40°F(5°C).
The activated charcoal filter should be switched off
when windows fog up on the inside, or if the passenger
compartment needs to be quickly heated or cooled
down.Switching on the activated carbon filter and activating
convenience closing:
The indicator lamp in the e button is off.
Press button e for more than 2 seconds, the side
windows and the sliding / pop-up roof will be closed. The
indicator lamp in the button lights up.
Switching off activated carbon filter and activating
convenience opening:
The indicator lamp in the e button is on.
Press button e for more than 2 seconds, the side
windows and the sliding / pop-up roof return to the
position they were in before closing.
A window or the sliding / pop-up roof opened manually
after convenience closing will no longer be returned to
the position it was in before closing when convenience
opening is selected.

173 Automatic climate control
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cluster displayPractical hints Car care Index Economy mode
The function of this setting corresponds to the
automatic mode. However, because the air conditioning
compressor will not engage (fuel savings), it is not
possible to air condition in this setting.Press S button to activate. The indicator lamp in the
button illuminates.
Press S button once again to return to the previous
setting.
Important!
In the S mode the windows could fog up on the
inside. Switch off S mode.