Page 430 of 506

429 Practical hints
Battery
Reconnecting the battery
Turn off all electrical consumers.
Remove SmartKey from starter switch.
Vehicles with KEYLESS-GO*:
Press the start / stop button until 
the engine shuts off.
Open the driver’s door.
Connect the battery positive lead and 
fasten its cover3.
Connect the battery negative lead2.
Reinstall the filter box (
page 427).Batteries contain materials that can harm 
the environment if disposed of improperly. 
Large 12-volt storage batteries contain 
lead. Recycling of batteries is the preferred 
method of disposal. Many states require 
sellers of batteries to accept old batteries 
for recycling.
Warning!
G
Never charge a battery while still installed in 
the vehicle unless the accessory battery 
charge unit* approved by Mercedes-Benz is 
being used. Gases may escape during charg-
ing and cause explosions that may result in 
paint damage, corrosion or personal injury.
An accessory battery charge unit* specially 
adapted for Mercedes-Benz vehicles and 
tested and approved by Mercedes-Benz is 
available, permitting the charging of the bat-
tery in its installed position. Contact an au-
thorized Mercedes-Benz Center for 
information and availability. Charge battery 
in accordance with the separate instruc-
tions for the accessory battery charger*.
!NEVER invert the terminal connections!!The battery, its filler caps and the vent 
tube must always be securely installed 
when the vehicle is in operation.
iThe following procedures must be car-
ried out following any interruption of 
battery power (e.g. due to reconnect-
ing):
Set the clock (
page 147) (vehi-
cles with COMAND*: see COMAND 
operator’s manual).
Resynchronize the side windows 
(page 243). 
     
        
        Page 472 of 506

471 Index
Central locking
Automatic 110
From inside 110
Locking from inside 110
Switch 110
Switching on/off 
(control system) 155
Unlocking from inside 110
Central locking switch 110
Certification label 442
Changing
CDs 218
Key setting 156
Charcoal filter 197
Activating 197
Deactivating 197
Charging
Vehicle battery 428
CHECK ENGINE 
malfunction indicator lamp 356
Checking
Coolant level 310
Oil level 304, 307
Tire inflate pressure 304
Vehicle lighting 304Child safety 72
Air bags 62
Front passenger front 
air bag off indicator lamp 79
Infant and child 
restraint systems 67, 72
LATCH child seat anchors 80
OCS 75
Child safety switch see 
Blocking of rear window operation
Child seat anchors see 
LATCH child seat anchors
Cigarette lighter 274Cleaning 345
Cup holder 351
Gear selector lever 351
Hard plastic trim items 351
Headlamps 176
Headliner 351
Instrument cluster 351
Leather upholstery 352
Light alloy wheels 350
Nubuck leather upholstery 
(CLK 55 AMG) 352
Parktronic system* sensor 349
Plastic and rubber parts 352
Seat belts 351
Soft top 347
Steering wheel 351
Upholstery 352
Windows 350
Windshield 53
Wiper blades 349
Wood trims 352
Cleaning and care of vehicle 345
Cleaning tires 315
Climate control 180
Clock 25, 148 
     
        
        Page 489 of 506

488 IndexService and Warranty Booklet
Loss of 441
Service and warranty information 10
Service life (tires) 314
Service System see 
Maintenance service system
Setting
Convenience functions 144, 156
Cruise control 256
Date (day) 150
Date (month) 149
Date (year) 151
Daytime running lamp mode 152
Higher speed in cruise control 258
Hours (clock) 148
Individual vehicle settings 142
Interior lighting 
delayed switch-off 154
Key-dependent memory 157
Lamps and lighting 
(control system) 151
Language, multifunction display 146
Locator lighting 153
Lower speed in cruise control 258
Miles/kilometers 
in speedometer 145Minutes (clock) 148
Parking position for 
exterior rear view mirrors 157
Radio station 215
Slower speed in cruise control 258
Speedometer display mode 145
Temperature (Interior) 183
Temperature (interior) 193
Temperature indicator 145
To last stored speed 
(“Resume” function) 
in cruise control 259
Units
Speedometer 145
Temperature 145
Setting current speed
Cruise control 256
Setting the temperature 183Settings
Convenience functions 156
Factory, KEYLESS-GO* 101
Factory, SmartKey 96
Individual (SmartKey) 157
Lighting (control system) 151
Menus and submenus 135
Resetting all (control system) 142
Resetting in the submenu 143
Selective 96, 102
Settings menu
Functions in 142
Individual vehicle settings 142
Submenus 143
Shift lock 465
Shifting
Gear selector lever 163
Gear selector lever positions 167
Into optimal gear range 
(Automatic transmission) 165
Side marker lamps
Replacing bulbs 414, 415, 419