2008 MERCEDES-BENZ CLS500 Active head

382 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
. Active Headlamps
InoperativeThe active Bi-Xenon* headlamp system is
malfunctioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Active HeadlampsThe active Bi-Xenon* headlamps are mal-
functioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Low Beam
LeftThe left low beam lamp is malfunctioning.Halogen headlamp:
Replace the bulb as soon as possible
(
page 404).
Bi-Xenon* headlamp:
Contact an authorized Mercedes-Benz
Center as soon as possible.
Low Beam
RightThe right low beam lamp is malfunction-
ing.Halogen headlamp:
Replace the bulb as soon as possible.
Bi-Xenon* headlamp:
Contact an authorized Mercedes-Benz
Center as soon as possible.

401 Practical hints
Resetting activated head restraints
Resetting activated head restraints
If the active head restraint have been trig-
gered in an accident, the head restraints
must be reset. Otherwise, active head re-
straint cannot offer any additional protec-
tion in the event of another rear-end
collision.
You can tell that the head restraints have
been activated when they have been
moved forward and cannot be adjusted.
Take the reset tool out of the
Mercedes-Benz vehicle literature
pouch.
Guide reset tool into center of head re-
straint between head restraint cushion
and rear head restraint cover.
Press reset tool forward in direction of
arrow.
Press reset tool downward until you
hear the head restraint release
mechanism audibly engage.
Pull out reset tool.
Firmly press head restraint cushion
backward towards rear head restraint
cover until it engages.
Repeat this procedure for second head
restraint.
For information on head restraint adjust-
ment, see “Seats” (
page 41).
iFor your convenience, we recommend that
you have this work carried out by an authorized
Mercedes-Benz Center.
You will find the reset tool for manually operating
the head restraints in the Mercedes-Benz vehicle
literature pouch.
Warning!G
For safety reasons, have the active head re-
straints checked by an authorized
Mercedes-Benz Center after a rear-end colli-
sion.
!Be careful not to damage upholstery.
Warning!G
When pushing back the head restraint cush-
ion, take care that your fingers do not be-
come caught between the head restraint
cushion and the cover. Failing to do so may
lead to injury.

457 Index
A
ABS 89
Indicator lamp 344
Messages in display 360, 374
Accelerator position, automatic
transmission 173
Accessory weight 323
Accident 58
Active Bi-Xenon headlamps see Head-
lamps
Active head restraints 81
resetting 401
Adaptive Damping System 230
Adjusting 41
ADS 230
Air bags 66
Children 67
Front, Driver 69
Front, Passenger 69
Knee bag 70
Safety guidelines 68
Side impact 70
Window curtain 70
Air conditioning refrigerant 450
Air conditioning system see Climate con-
trol system 201Air conditioning, Cooling 192, 201
Air distribution 195
Air pressure 323
Air pressure see Tire inflation pressure
Air pump, electric 417
Air recirculation mode 198
Air vents 189
Air volume 196
Airmatic DC (Dual Control) 230
Message in display 391–392
Suspension tuning 230
Vehicle level control 230
Alarm
Audible alarm and flashing exterior
lamps (Panic alarm) 88
Canceling 98
Visual 97
Alarm system see Anti-theft systems
Alignment bolt (vehicle tool kit) 395, 415
AMG menu 145
Lap analysis 148
Overall analysis 148
RACETIMER 146
Vehicle supply voltage 146
Anticorrosion/antifreeze 454
Antilock Brake System see ABSAnti-theft systems 97
Anti-theft alarm system 97
Immobilizer 97
Aquaplaning see Hydroplaning
Ashtrays 248
Aspect ratio 323
AUDIO menu 148
Audio search function 163
Audio system
CD mode 149
Selecting radio station 149
Selecting satellite radio station* 149
Auto-dimming, Rear view mirrors 183
Automatic central locking, Control
system 163
Automatic climate control (4-zone) 188
Air recirculation mode 198
Deactivating 193
Rear window defroster 186
Setting the temperature 195
Automatic headlamp mode 127
Automatic lighting control, Interior
lighting 133
Automatic locking when driving 163
Automatic shift program 175

464 Index
Head restraints 118
Active head restraints 81
Comfort head restraint*,
Adjusting 44
Folding back 119
Front seat, Adjusting 43
Front seat, Removing
Rear seat, Removing and
installing 118
Headlamp cleaning system* 183
Headlamp shut off delay see Delayed
shut-off, Exterior lamps 161
Headlamps
Automatic headlamp mode 127
Bi-Xenon headlamps, Active 126
Cleaning lenses 337
Cleaning system* 183
Halogen 405
High beam 55
High beam flasher 55
High beam see High beam headlamps
Low beam 55
Manual headlamp mode 127
Replacing bulbs 404
Switch 55Headliner and shelf below rear window,
cleaning 340
Heated seats* 121
Heated steering wheel (Canada
only) 251
Height adjustment
Head restraints 43
Seats 42
Steering wheel 44
Vehicle level control 231
High beam flasher 55, 130
High beam headlamps
Replacing bulbs 408
Switching on 55, 130
High mounted brake lamp 406
High-performance brake system
(CLS 63 AMG only) 274
Hood 286
Message in display 372
Horn 25
HVAC see Climate control system
Hydroplaning 276
I
Identification labels 434
Identification Number, Vehicle (VIN) 435
Ignition 38, 40Immobilizer 97
Indicator lamps see Lamps, indicator and
warning
Infant and child restraint systems see Chil-
dren in the vehicle
Inflation pressure see
Tires, Inflation pressure 301
Information button (Tele Aid) 260
Inside door handle 108
Installing
Wiper blades 411
Instrument cluster 26, 136
Coolant temperature indicator 137
Illumination brightness 136
Lamps 344
Messages in the multifunction
display 358
Multifunction display 139
Outside temperature indicator 138
Instrument lighting see Instrument cluster,
Illumination brightness 136
Instrument panel see Instrument
cluster 136
Instruments and controls see
Cockpit 136

470 Index
Recommended tire inflation
pressure 325
Recovery services, Stolen vehicle (Tele
Aid) 262
Refrigerant, Air conditioning 450
Refueling 283
Regular checks 285
Reminder, seat belts see Seat belts, Tell-
tale
Remote control see Key, SmartKey
Remote door unlock (Tele Aid) 261
Replacing bulbs
Additional turn signals 407
Brake lamps 407
Front lamps 407
Headlamps 405
High beam headlamps 408
High mounted brake lamp 407
License plate lamps 409
Low beam headlamps 408
Parking lamps 409
Side marker lamps 407
Tail lamps 409
Turn signal lamps 408
Reporting safety defects 18
Research octane number see RONReserve fuel
Message in display 380
Reset button in the instrument
cluster 136, 153
Reset tool (Active head restraints) 401
Restraint system see Children in the vehi-
cle
Retaining hook 242
Reverse gear position, Automatic
transmission 169, 171
Rims 325, 438
Roadside assistance 12
Button 259
RON 284
Roof rack* 238
Rotating tires 326
Rubber parts, cleaning 339
Run Flat Indicator* 304
S
Safety
Driving safety systems 89
Occupant 64
Reporting defects 18
Safety belts see Seat belts
Satellite radio* 149
Seat belt force limiter 79Seat belts 76
Children in the vehicle 82
Cleaning 340
Fastening 48
Height adjustment 50
Proper use of 50, 78
Safety guidelines 68
Telltale 27, 351, 352
Warning lamp 351, 352
Seating capacity 297
Seats 41, 118
Adjusting 41
Easy entry/exit feature* 45
Heater* 121
Memory function 123
Multicontour seat* 120
Ventilation* 122
Securing cargo
Cargo tie-down hooks 242
Selecting display 156
Selective setting see Key, SmartKey or
Key, SmartKey with KEYLESS-GO*
Selector lever see Gear selector lever
Self-test
OCS 76
Tele Aid 257