2008 MERCEDES-BENZ S550 4MATIC sensor

625 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Tire pressure monitor
inoperative
No wheel sensorsThe Advanced TPMS* is deactivated be-
cause wheels without proper sensors were
installed.Have the wheel sensors installed by an authorized
Mercedes-Benz Center.
As soon as all wheels with sensors have been mounted, the
Advanced TPMS* is switched back on after driving for sever-
al minutes.
Tire pressure monitor
currently unavailableThe Advanced TPMS* is unable to monitor
the tire inflation pressure due to:

a nearby radio interference source

the on-board voltage is too low

excessive wheel sensor temperatures
As soon as the causes for the malfunction are no longer present,
the Advanced TPMS* automatically becomes active again after
a few minutes driving.
Tire pressures
displayed after driving
a few minutesVehicles with Advanced TPMS*:
The tire inflation pressure is being checked.Drive the vehicle for a few minutes.
Visit workshop
without shifting gearsThe automatic transmission cannot be shift-
ed out of the set position because of a mal-
function.If the automatic transmission is shift to drive positionD
(
page 399):
Without changing the automatic transmission from drive
positionD, contact an authorized Mercedes-Benz Center.
If the automatic transmission is shift to positionN, R or P:
Do not drive.
Consult an authorized Mercedes-Benz Center.

632 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Service
See Oper. ManualS 600 and S 65 AMG only:
The brake system sensors are malfunction-
ing. The brake system continues to function
normally with full brake force boost.Continue driving with added caution.
Have the system checked at an authorized
Mercedes-Benz Center as soon as possible.
(USA only)
(Canada only)
Brake wearThe brake pads have reached their wear
limit.Have the brake pads replaced as soon as
possible.
!Brake pad thickness must be visually
checked by a qualified technician at the intervals
specified in the Maintenance Booklet.

654 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
AUTO lamps
inoperativeThe light sensor is malfunctioning. Daytime
driving lamps are switched on.Contact an authorized Mercedes-Benz Cen-
ter as soon as possible.
To switch off the headlamps (U.S. vehicles only):
Switch off daytime running lamps in the in-
strument cluster control system
(
page 281).
Turn the exterior lamp switch to position0.
Turn signal,
Rear LeftThe left rear turn signal lamp is malfunction-
ing. A substitute bulb is being used.Contact an authorized Mercedes-Benz Cen-
ter as soon as possible.
Turn signal,
Rear RightThe right rear turn signal lamp is malfunc-
tioning. A substitute bulb is being used.Contact an authorized Mercedes-Benz Cen-
ter as soon as possible.
Turn signal,
Left mirrorThe turn signal in the left exterior rear view
mirror is malfunctioning. This message will
only appear if a critical number of light emit-
ting diodes have stopped working.Have the LEDs replaced as soon as possible.

666 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Wheel sensor(s)
missingOne or more sensors malfunction (e.g. bat-
tery in one or more wheel sensor is empty).
One or more wheels without wheel sensors
mounted (e.g. spare tire).
No pressure value is shown on the multi-
function display for the tire in question.Have the Advanced TPMS* checked by an
authorized Mercedes-Benz Center.
Have the wheel sensors installed by an
authorized Mercedes-Benz Center.
The tire pressure for the respective tire is
shown in the multifunction display after a few
minutes driving.
Tire pressure
Please rectifyVehicles with Advanced TPMS*:
The pressure is too low in one or more tires.
Or the tire pressures of the individual
wheels differ too radically from one anoth-
er.Check and adjust tire inflation pressure as
required (
page 561).

691 Practical hints
Flat tire
6Wheel wrench
Tighten the five wheel bolts evenly, fol-
lowing the diagonal sequence illustrat-
ed (1 to 5), until all bolts are tight.
Observe a tightening torque of
110 lb-ft (150 Nm).
Fully collapse the jack, with handle
folded in (storage position),
(
page 669).
Store the jack and the other vehicle
tools in the designated storage space
underneath the trunk floor
(
page 668).
Warning!G
Have the tightening torque checked after
changing a wheel. The wheels could come
loose if they are not tightened to a torque of
110 lb-ft (150 Nm).
iVehicles with Advanced TPMS*:
Do not activate the tire inflation pressure moni-
tor until a full size wheel/tire with functioning
sensor has been placed back into service on the
vehicle.

739 Index
Cruise control 419
Activating 420
Canceling 421
Driving downhill 421
Driving uphill 421
Message in display 614
Setting current speed 420
Setting to last stored speed
(“Resume” function) 423
Cup holder
In front seat armrest 498
In rear seat armrest 498
Curb weight 576
D
Date
Setting (COMAND) 236
Daytime running lamp mode 373
Setting 281
Deceleration
With DISTRONIC Plus* 428
Deep water see Standing water
Defrosting 472
Delayed switch-off
Exterior lighting (COMAND) 242
Interior lighting (COMAND) 248Department of Transportation see DOT
Destination entry (COMAND) 172
Destination memory (COMAND) 217
Difficulties
While driving 393
While starting 391
Digital speedometer 269
Additional speedometer 282
Dimensions, Vehicle 723
Direction of rotation, Tires 553
Displays
Additional speedometer 282
Digital speedometer 269
DISTRONIC Plus* 427
Maintenance service indicator 582
Multifunction display 264
Vehicle status message see
Multifunction display messages
Distance
Decreasing in DISTRONIC Plus* 437
Increasing in DISTRONIC Plus* 437
Setting in DISTRONIC Plus* 436
Distance to Empty (Range) 269
Distance warning lamp* 29, 604DISTRONIC Plus* 424
Activated 429
Activating 430
Calling up settings 428
Cleaning system sensor 589
Deactivated 429
Deactivating 435
Deceleration 428
Decreasing distance 437
Decreasing time interval 436
Displays in the multifunction
display 427
Distance warning lamp 29, 604
Driving hints 437
Increasing distance 437
Increasing time interval 436
Intermittent signal tone 427
Lever 430
Menu 428
Messages in display 615
Sensor cover 589
Setting a higher speed 433
Setting a slower speed 434
Setting following distance 436

745 Index
J
Jack 669, 687
Jacking up the vehicle 687
Jump starting 697
K
Key, Mechanical 671
Loss of 340
Key, SmartKey 332
Battery check lamp 332, 334
Factory setting 333
Global locking and unlocking 333
Lock button 332
Locking and unlocking 332
Loss of 340
Messages in display 651
Opening button for trunk 332
Panic button 65
Remote control 332
Restoring to factory setting 334
Selective setting 334
Starting the engine 390
Switching on ignition with 344
Turning off engine 397
Unlock button 332Key, SmartKey with KEYLESS-GO* 335
Battery check lamp 335, 339
Closing, Trunk 479
Factory setting 338
Global locking and unlocking 338
Important notes on using
KEYLESS-GO* 336
Lock button 335
Locking and unlocking 335
Loss of 340
Messages in display 650
Opening button for trunk 335
Panic button 65
Remote control 335
Restoring to factory setting 340
Selective setting 339
Starting the engine 390
Switching on ignition with 346
Turning off engine 398
Unlock button 335
Kickdown 406
Kilopascal 577L
Labels 712
Certification 712
Emission control information 713
Tire and Loading Information 554
Vacuum line routing diagram 713
Lamp bulbs, exterior 678
Lamps, exterior
Front 679
Light sensor 654
Rear 679
Lamps, indicator and warning
ABS 29, 66, 598
Air bag Off 46
Battery check lamp (SmartKey with
KEYLESS-GO* 339
Battery check lamp (SmartKey) 334
Brake warning lamp 29
Brakes 599
Combination low tire pressure* mal-
function telltale 29, 608
Distance warning lamp* 29, 604
DISTRONIC Plus* 29, 427, 604
Electronic parking brake 29, 600
Engine diagnostics 29, 602
Engine malfunction 29, 602

746 Index
ESP®29, 599, 604
Front passenger front air bag off 50,
610
Fuel reserve 605
High beam headlamp 29
Maintenance service indicator 582
Park Assist* 29
Parktronic* 29
Seat belt telltale 29, 605
SRS 29, 607
TPMS* malfunction telltale 29, 608
Turn signals 29
Language (COMAND) 238
LATCH-type child seat anchors see
Children in the vehicle
Lever
For automatic transmission
(gear selector lever) 399
For cruise control 420
For DISTRONIC Plus* 430
License plate lamps
Messages in display 655
Replacing bulbs 679
Light alloy wheels, Cleaning 593Light sensor
Message in display 654
Lighter see Cigarette lighter
Lighting 371
Automatic headlamp mode 372
COMAND display illumination 87
Corner-illuminating lamps 376
Courtesy lighting 380
Daytime running lamp mode 373
Door entry lamps 379
High beam flasher 375
Instrument cluster illumination 417,
463
Interior 378
Manual headlamp mode 372
Trunk 380
Limp-home mode 416
Loading see Vehicle loading
Locator lighting (COMAND) 243
Lock button
Door handle (KEYLESS-GO*) 338,
388
Key, SmartKey 332
Key, SmartKey with
KEYLESS-GO* 335Locking 394
Automatic central locking
(COMAND) 245
Vehicle in an emergency 672
Locking knob 341
Loss of
Key, Mechanical 340
Key, SmartKey 340
Key, SmartKey with
KEYLESS-GO* 340
Service and Warranty Information
Booklet 711
Low beam headlamps
Replacing bulbs 679
Lowering
Vehicle 690
Lubricants 724
Lumbar support (COMAND) 260