Page 5 of 481

ContentsSafety and Security........................... 63
Occupant safety................................... 64
Air bags .......................................... 66
Occupant Classification System
(USA only) ...................................... 71
BabySmart
TM air bag deactivation
system (Canada only) ..................... 76
Seat belts ....................................... 78
Preventive occupant safety
(PRE-SAFE®) ................................... 82
Active head restraints .................... 83
Children in the vehicle .................... 84
Blocking of
rear door window operation ........... 89
Panic alarm .......................................... 90
Activating ....................................... 90
Deactivating ................................... 90
Driving safety systems ......................... 91
ABS ................................................ 91
BAS ................................................ 92
Adaptive Brake ............................... 93
EBP................................................. 93
ESP
®............................................... 94Anti-theft systems ............................... 99
Immobilizer .................................... 99
Anti-theft alarm system.................. 99
Controls in detail............................. 101
Locking and unlocking ....................... 102
SmartKey ..................................... 102
SmartKey with KEYLESS-GO* ...... 105
Checking batteries in the
SmartKey or SmartKey with
KEYLESS-GO* .............................. 110
Loss of the SmartKey or
SmartKey with KEYLESS-GO* ...... 110
Opening the doors
from the inside ............................. 111
Opening the trunk ........................ 112
Closing the trunk.......................... 113
Trunk emergency release ............. 116
Valet locking ................................ 117
Automatic central locking ............ 118
Locking and unlocking
from the inside ............................. 118 Seats ................................................ 120
Front seat active head restraints . 120
Rear seat head restraints ............. 120
Lumbar support ........................... 121
Multicontour seat*....................... 122
Seat heating*............................... 123
Seat ventilation* .......................... 124
Memory function ............................... 125
Storing positions into memory ..... 126
Recalling positions from memory. 126
Storing exterior rear view mirror
parking position ........................... 127
Lighting ............................................. 128
Exterior lamp switch .................... 128
Combination switch ..................... 132
Corner-illuminating
front fog lamps* (CLS 550 with
Bi-Xenon* headlamps only).......... 132
Hazard warning flasher ................ 134
Interior lighting in the front .......... 135
Interior lighting in the rear ........... 136
Door entry lamps ......................... 137
Trunk lamp ................................... 137
Page 122 of 481
121 Controls in detailSeats
Folding head restraints back
The rear seat head restraints can be folded
backward for increased visibility.
1Head restraint release switch
Switch on the ignition (
page 38).
Press the symbol-side on rocker
switch1 to release the head re-
straints.
The head restraints will fold backward.Placing head restraints upright
Pull the head restraint forward until it
locks into position.
Lumbar support
The curvature of the front seats can be ad-
justed to help enhance lower back support
and seating comfort.
1Adjustment lever
Move adjustment lever1 in direction
of the arrows until you have reached a
comfortable seating position.
!
Make sure the head restraints engage when
placing them upright. Otherwise their protective
function cannot be assured.
Page 126 of 481

125 Controls in detail
Memory function
Memory function
Prior to operating the vehicle, the driver
should check and adjust the seat height,
seat position fore and aft, and seat back-
rest angle if necessary, to ensure adequate
control, reach and comfort. The head re-
straint should also be adjusted for proper
height. See also the section on air bags
(page 66) for more information on prop-
er seat positioning.
In addition, adjust the steering wheel to
ensure adequate control, reach, operation
and comfort. Both the interior and exterior
rear view mirrors should be adjusted for
adequate rear vision.
Fasten seat belts. Infants and small chil-
dren should be seated in a properly se-
cured restraint system that complies with
U.S. Federal Motor Vehicle Safety Stan-
dards 213 and 225 and Canadian Motor
Vehicle Safety Standards 213 and 210.2.With the memory function you can store up
to three different settings.
Each stored position on the driver’s side in-
cludes the following settings:
Seat position and lumbar support
Multicontour seat*: previously saved
setting
Steering wheel position
Exterior rear view mirror positionsEach stored position on the passenger side
includes the following settings:
Seat position and lumbar support
Multicontour seat*: previously saved
settingWarning!
G
Do not activate the memory function while
driving. Activating the memory function
while driving could cause the driver to lose
control of the vehicle.
Page 468 of 481

467 Index
Lighting 128
Automatic headlamp mode 129
Combination switch 132
Daytime running lamp mode 130
Door entry lamps 137
Exterior lamp switch 128
Front fog lamps 131
High beams 132
Instrument cluster illumination 138
Interior 135
Locator lighting 131
Low beam 128
Manual headlamp mode 129
Night security illumination 131
Parking lamps 128
Rear fog lamp 131
Settings (control system) 161
Trunk lamp 137
Limp-home mode 184
Loading see Vehicle loading
Loading the vehicle 296Locator lighting 131, 162
Lock button (KEYLESS-GO*)
Door handle 62
Trunk lid 109
Locking the vehicle 59
In an emergency 397
Locking/Unlocking, SmartKey 36, 104
Locking/Unlocking, SmartKey with
KEYLESS-GO* 37
Loss of
Key, Mechanical 110
Key, SmartKey 110
Key, SmartKey with
KEYLESS-GO* 110
Loss of Service and Warranty Information
Booklet 433
Low beam headlamps 55
Replacing bulbs 408
Switching on 55
Lubricants 449
Lumbar support 121M
Main Dimensions 448
Maintenance 12
Calling up service indicator 331
Clearing service indicator
message 330
FSS PLUS (Canada vehicles) 330
Maintenance System 330
Resetting service indicator 331
Service indicator message 329
Service term exceeded 330
Manual headlamp mode 129
Manual shift program CLS 63 AMG 181
Deactivating 183
Maximum load rating, Tires 324
Maximum loaded vehicle weight 324
Maximum tire inflation pressure 324
Mechanical key 396
Memory functions 125
Menus see Control system menus
Microphone, Hands-free 31