Page 198 of 458

196 Controls in detailAutomatic climate controlResidual heat and ventilation
With the engine switched off, it is possible
to continue to heat or ventilate the interior
for up to 30 minutes. This feature makes
use of the residual heat produced by the
engine.
Activating
Turn the SmartKey in the starter switch
to position1 or0, or remove it from
the starter switch.
Press buttonT (
page 188).
The indicator lamp on buttonT
comes on.Deactivating
Press buttonT (
page 188).
The indicator lamp on buttonT
goes out.
The residual heat is automatically turned
off:
when the ignition is switched on
after about 30 minutes
if the battery voltage drops
Ventilated storage compartment
Depending on vehicle model and configu-
ration, your vehicle is equipped with a stor-
age compartment under the front armrest
(page 234) which can be ventilated
when the automatic air conditioning is
switched on. If so equipped, the switch is
located inside the storage compartment in
the front. The air temperature is about the
same as that of the center air vents.
The air volume is dependent on the setting
of:
Air distribution control
Air volume control
Air vents in the dashboard
The air temperature is about the same as
that of the dashboard air vents. It cannot
be regulated separately.
iHow long the system will provide heat-
ing depends on the coolant tempera-
ture and the temperature set by the
operator. The blower will run at speed
setting1 regardless of the air
distribution control setting.
Page 199 of 458

197 Controls in detail
Automatic climate control
Switching ventilation on
Open the storage compartment in front
of the armrest, see “Storage compart-
ment below the front armrest”
(page 234)
Push upper portion of switch.
Switching ventilation off
Open the storage compartment in front
of the armrest, see “Storage compart-
ment below the front armrest”
(page 234)
Push lower portion of switch.Rear passenger compartment adjust-
able air vents
1Left center air vent, adjustable
2Right center air vent adjustable
3Thumbwheel for center air vents with
adjustable booster blowerTo open center air vents and to adjust the
booster blower:
Turn thumbwheel3.
!Do not obstruct the air vent in the stor-
age compartment.iThe compartment can get very warm
due to its confined space. When storing
heat sensitive objects in the compart-
ment, close the air vent while heating
the passenger compartment.
iThe booster blower allows air volume
speed to the rear passenger compart-
ment to be increased at four different
levels.
The temperature at the air vents for
rear passenger compartment1
and2 is the same as at the dashboard
center air vents.
Page 396 of 458

394 Practical hintsFusesFuses are designed to protect the electri-
cal circuits in your vehicle from a short cir-
cuit. If a fuse is blown, the component(s)
and systems controlled by that fuse will
stop working.
The following aids are available to help you
replace fuses (
page 394):
Fuse chart.
Spare fuses
Special fuse extractorYour vehicle’s electrical fuses are located
in various fuse boxes:
In the dashboard on the passenger side
(page 395)
In the rear passenger compartment un-
der the right rear seat (
page 395)
In the engine compartment on the driv-
er’s side (
page 396)
In the engine compartment on the pas-
senger side (
page 396)
Aids for replacing fuses
Fuse chart
A chart explaining fuse allocation and fuse
amperages can be found in the vehicle tool
kit in the trunk (
page 365).
Spare Fuses
Spare Fuses are found in the vehicle tool
kit in the trunk (page 365).
Fuse extractor
The fuse extractor is found in the vehicle
tool kit in the trunk (page 365).
Warning!
G
Only use fuses approved by Mercedes-Benz
and which have the specified amperage. Us-
ing other fuses may cause an overload and
lead to a fire, or cause damage to electrical
components and/or systems.
!Never attempt to repair or bridge a
blown fuse. Have the cause determined
and remedied by an authorized
Mercedes-Benz Center.
Page 397 of 458

395 Practical hintsFuses
Fuse boxes in passenger compartment
There are two fuse boxes. One fuse box is
located in the dashboard on the front pas-
senger side. An additional fuse box is lo-
cated under the right rear seat.
Fuse box in dashboard
1CoverOpening
Open the front passenger door.
Using the flat of your hand, press on
the middle of the cover1.
The edge of cover1 lifts up slightly
from the dashboard.
Insert flat, blunt object into the edge of
the cover as a lever.
Loosen cover1 from the dashboard
using lever.
Using your hands, pull cover1 in the
direction of the arrow and remove.
Closing
Hook cover2 into the opening at the
front.
Press cover2 back on until it engag-
es.Fuse box in the rear passenger
compartment
1Cover
Opening
Pull cover1 away from fuse box in di-
rection of arrow.
Remove cover rearward.
Closing
Press cover back on until it engages.
!Do not use sharp objects such as a
screw driver to open the fuse box
cover2 in the dashboard, as this
could damage it.