Page 202 of 498

201 Controls in detail
4-zone automatic climate control
Nearly all dust particles, pollutants and 
odors are filtered out before outside air en-
ters the passenger compartment through 
the air distribution system.
The air conditioning will not engage (no 
cooling) if the A/C mode (
page 209) is 
deactivated.Deactivating the climate control 
system
Deactivating
Press button´ (
page 198) or 
(
page 199) until the display4 
(page 198) or (
page 199) is 
cleared.
The climate control system is deacti-
vated.
Warning!
G
Follow the recommended settings for heat-
ing and cooling given on the following pag-
es. Otherwise the windows could fog up, 
impairing visibility and endangering you and 
others.
iSevere conditions (e.g. strong air pollu-
tion) may require replacement of the 
filter before its scheduled interval. A 
clogged filter will reduce the air volume 
to the interior.
If the vehicle interior is hot, ventilate 
the interior before driving off, see 
“Summer opening feature” 
(page 217). The climate control will 
then adjust the interior temperature to 
the set value much faster.
Keep the air intake grille in front of the 
windshield free of snow and debris.
Do not obstruct air flow by placing ob-
jects on the air flow-through exhaust 
slots below the rear window.
Warning!
G
When the climate control is switched off, the 
outside air supply and circulation are also 
switched off. Only choose this setting for a 
short time. Otherwise the windows could 
fog up, impairing visibility and endangering 
you and others. 
     
        
        Page 209 of 498

208 Controls in detail4-zone automatic climate controlDeactivating
Press button, (
page 198) or 
(
page 199) again.
The indicator lamp on the button goes 
out.Combination filter with 
pollutant-sensitive air-recirculation 
mode
The combination filter reduces pollutants 
and unpleasant odors in the outside air. 
The pollutant-sensitive air-recirculation 
mode automatically switches off the 
supply of outside air when pollutants are 
detected in the air.
iThe air recirculation mode is deactivat-
ed automatically:
after 5 minutes if the outside tem-
perature is below 
approximately 41°F (5°C)
after 5 minutes if the air condition-
ing is turned off
after 30 minutes if the outside tem-
perature is above approximately 
41°F (5°C)
iPress and hold button, for approx-
imately 2 seconds. The side windows 
and or tilt/sliding sunroof* will return 
to their previous position. You can re-
lease button, once the opening 
procedure has begun. The windows 
and tilt/sliding sunroof* or tilt/sliding 
panel* continue opening until they 
have reached their previous position.
A window or tilt/sliding sunroof* will 
only return to its previous position if it 
has not been moved to another posi-
tion using the respective window 
switch or tilt/sliding sunroof* switch 
after it was closed with button,. 
A window or tilt/sliding sunroof* that 
has been moved will remain in its cur-
rent position if button, is used to 
re-open the remaining windows or 
tilt/sliding sunroof*.
iThe pollutant-sensitive air-recirculation 
mode is not possible if you have 
switched off the air conditioning or if 
the temperature falls below 41°F 
(5°C). 
     
        
        Page 465 of 498

464 Technical dataFuels, coolants, lubricants etc.Engine oils
Engine oils are specifically tested for their 
suitability in our engines and durability for 
our service intervals. Therefore, only use 
approved engine oils and oil filters re-
quired for vehicles with Maintenance Sys-
tem (U.S. vehicles) or FSS PLUS (Canada 
vehicles). For a listing of approved engine 
oils and oil filters, refer to the Factory Ap-
proved Service Products pamphlet, or con-
tact an authorized Mercedes-Benz Center.
Engine oil additives
Do not blend oil additives with engine oil. 
They may damage the engine.
Damage or malfunctions resulting from 
blending oil additives are not covered by 
the Mercedes-Benz Limited Warranty.Air conditioning refrigerant
R-134a (HFC) refrigerant and special PAG 
lubricating oil are used in the air condition-
ing system.
Never use R-12 (CFC) or mineral-based lu-
bricating oil. Otherwise damage to the 
system will occur.
Brake fluid
During vehicle operation, the boiling point 
of the brake fluid is continuously reduced 
through the absorption of moisture from 
the atmosphere.
Only brake fluid approved by 
Mercedes-Benz is recommended. Your 
authorized Mercedes-Benz Center will pro-
vide you with additional information.
!Using engine oils and oil filters of spec-
ification other than those expressly re-
quired for the Maintenance System 
(U.S. vehicles) or FSS PLUS (Canada 
vehicles), or changing of oil and oil filter 
at change intervals longer than those 
called for by the Maintenance System 
(U.S. vehicles) or FSS PLUS (Canada 
vehicles) will result in engine damage 
not covered by the Mercedes-Benz 
Limited Warranty.
Please follow Maintenance System 
(U.S. vehicles) or FSS PLUS (Canada 
vehicles) recommendations for sched-
uled oil changes. Failure to do so could 
result in engine damage not covered by 
the Mercedes-Benz Limited Warranty.
Warning!
G
Under extremely strenuous operating condi-
tions, this moisture content can lead to the 
formation of bubbles in the system, thus re-
ducing the system’s efficiency.
Therefore, the brake fluid must be replaced 
regularly. Refer to your vehicle’s Mainte-
nance Booklet for replacement interval. 
     
        
        Page 482 of 498

481 Index
C
California retail buyers and lessees, 
important notice for 11
CAN system 472
Cargo tie-down hooks 250
Carpets, cleaning 349
CD changer* 154
CD player 154
Center console
Lower part 28
Upper part 27
Central locking
Automatic 122
Locking/unlocking from inside 122
Switch 122
Switching on/off 
(control system) 168
Central locking switch 122
Certification label 310
Checking tire pressure electronically with 
the Advanced Tire Pressure Monitoring 
System* (Advanced TPMS*), 
(Canada only) 316Children in the vehicle 75
Air bags 66
Blocking of rear window operation 82
Indicator lamp, front passenger front 
air bag 78
Infant and child restraint systems 76
LATCH-type child seat anchors 81
Cigarette lighter 258
Climate control system
Adjusting air distribution 204
Adjusting air volume 205
Air conditioning, Cooling 209
Automatic mode 202
Front defroster 205
Residual engine heat (REST) 209
Clock 25, 162
CLS 55 AMG
MANUAL shift program mode 188
Cockpit 22, 472
Cockpit management and data system see 
COMAND
Cold tire inflation pressure 332
Collapsible tire
Tire inflation pressure 427Collapsible tire, description 472
Collapsible wheel chock 400
COMAND* see separate operating 
r nstructions
Combination filter with pollutant-sensitive 
air-recirculation mode 208
Combination switch 53, 138
Control system 147, 473
Functions 151
Multifunction display 147
Multifunction steering wheel 148
Control system menus 150, 151
AUDIO 153
Distronic* 155
NAV* 155
Settings 157
Standard display 153
TEL* 172
Trip computer 171
Vehicle status message memory 156