Page 342 of 416
342 Practical hintsReplacing bulbs1Securing screw
2Tail lamp lens
3Turn signal lamp bulb
4Tail lamp bulb
5Brake lamp bulb
Loosen and remove securing
screws1.
Remove tail lamp lens2.
Press gently onto respective bulb3,
4, or5 and turn counterclockwise
out of its bulb socket.
Press the new bulb gently into its bulb
socket and turn clockwise until it
engages.
Reinstall tail lamp lens2.
Install and tighten securing screws1.Rear fog lamp/Backup lamp
1Securing screw
2Lamp lens
3BulbiDo not overtighten securing screws1.
Otherwise tail lamp lens2 could be
damaged.
Page 343 of 416
343 Practical hints
Replacing bulbs
Loosen and remove securing
screws1.
Remove lamp lens2.
Press gently onto bulb3 and turn
counterclockwise out of its bulb
socket.
Press new bulb3 gently into the bulb
socket and turn clockwise until it
engages.
Reinstall lamp lens2.
Install and tighten securing screws1.License plate lamp
1Securing screw
2License plate lamp lens (with bulb
socket)
3Tubular bulb
Loosen and remove securing
screws1.
Remove license plate lamp lens2.
Replace tubular bulb3.
Reinstall license plate lamp lens2.
Install and tighten securing screws1.
iDo not overtighten securing screws1.
Otherwise lamp lens2 could be dam-
aged.
iDo not overtighten securing screws1.
Otherwise license plate lamp lens2
could be damaged.
Page 353 of 416
353 Practical hints
Battery
Reconnecting the battery
Turn off all electrical consumers.
Connect the positive lead and fasten its
cover.
Connect the negative lead.
Install the breather hose.!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 reconnec-
tion):
Set the clock (see COMAND
operator’s manual).
Resynchronize the front seat head
restraints and seat adjustment fore,
aft (
page 102).
Synchronize the ESP (
page 300).
Page 390 of 416

390 IndexCentigrade
Setting temperature units 135
Central locking
From inside 99
Switch 99
Switching on/off (control
system) 141
Unlocking from inside 99
Certification label 366
Changing
Key setting 142
Charging
Vehicle battery 351
Checking
Coolant level 237, 244
Oil level 237, 239
Checklist
Off-road driving 225
Child safety 72
Infant and child restraint systems 62,
68, 72
LATCH child seat anchors 77
Child safety switch see Blocking of rear
door window operation
Cigarette lighter 195Cleaning
Cup holders 284
Gear selector lever 284
Hard plastic trim items 284
Headlamps 162
Headliner 284
Illuminated door sill panels 285
Instrument cluster 284
Leather upholstery 285
Light alloy wheels 284
MB Tex upholstery 285
Plastic and rubber parts 285
Rear Parking Assist sensors* 283
Seat belts 284
Steering wheel 284
Windows 283
Windshield 54
Wiper blades 283
Wood trims 285
Cleaning tires 250
Climate control 164
Adjusting 167
Defogging windshield 167
Defrosting 168
Rear window defroster 163
Setting the temperature 166Clock 25
Closing
Glove box 190
Hood 239
Side windows 171
Tailgate 98
Tilt/sliding sunroof 173, 328
Tilt/sliding sunroof with
SmartKey 175
Windows 171
Windows with SmartKey 172
Closing tilt/sliding sunroof
In an emergency 328
Cockpit 22, 381
Cockpit management and data system
(COMAND) 382
Cold tire inflation pressure 271
COMAND 382
COMAND see separate operating
instructions
Combination switch 23, 114
High beam flasher 52, 114
High beam headlamps 114
Turn signals 52
Windshield wipers 53
Page 406 of 416

406 IndexSetting
Clock 25
Convenience functions 142
Cruise control 177
Daytime running lamp mode 137,
138
Higher speed in cruise control 178
Individual vehicle settings 132
Instrument lighting 120
Interior lighting delayed shut-off 140
Key-dependent memory 143
Lamps and lighting (control
system) 137
Language, multifunction display 136
Locator lighting 138
Lower speed in cruise control 178
Miles/kilometers in
speedometer 136
Night security illumination 139
Parking position for exterior rear view
mirrors 143
Slower speed in cruise control 178
Speed in cruise control 178
Speedometer display mode 136
Station selection mode 141Temperature (interior) 166
Temperature indicator 135
Time display mode 135
Units
Speedometer 136
Temperature 135
Time 135
Setting current speed 177
Settings
Convenience functions 142
Factory, SmartKey 94
Individual (SmartKey) 143
Lighting (control system) 137
Menus and submenus 125
Resetting all (control system) 132
Resetting in the submenu 133
Selective 94
Settings menu
Functions in 132
Individual vehicle settings 132
Submenus 133
Shift lock 385
Shifting
Gear selector lever positions 151
Shifting into optimal
Gear range 150Side marker lamps 334
Replacing bulbs 334, 340
Side markers
Cleaning 282
Side windows
Automatic opening 171
Cleaning 283
Closing 171, 172
Closing with SmartKey 172
Opening 171, 172
Opening fully 171
Opening with SmartKey 172
Stopping 171
Sidewall 273
Signal strength (telephone) 146
Simultaneous wiping and washing
Windshield wipers 54
Single wipe 54
SmartKey 92
Locking and unlocking 92
Opening and closing the tilt/sliding
sunroof with 175
Opening and closing windows
with 172
Replacing batteries 331
Unlocking with 34