2002 MERCEDES-BENZ S430 Key sync

5 ContentsCoolant level ...................................344
Adding coolant ...........................344
Windshield and headlamp
washer system ...........................345
Windshield and headlamp
washer fluid mixing ratio .........345
Spare wheel, vehicle tools,
storage compartment ................346
Vehicle jack .....................................347
Wheels .............................................348
Tire Replacement .......................348
Rotating wheels ..........................349
Spare wheel ....................................349
Changing wheels ........................... 351
Tire inflation pressure ..................356
Battery .............................................357
Jump starting ..................................359
Towing the vehicle ......................... 361
Exterior lamps ................................364
Headlamp assembly ...................365
Taillamp assemblies ..................368Changing batteries in
the electronic key ......................371
Synchronizing
remote control ............................ 373
Changing batteries in the
KEYLESS-GO-card .....................374
Emergency engine
shut-down ...................................376
Fuel filler flap,
manual release ..........................376
Emergency operation of
sliding/pop-up roof .................. 377
Replacing wiper blades ................ 378
Roof rack ......................................... 380
Vehicle careCleaning and care
of the vehicle ............................. 382
Power washer ............................. 383
Tar stains .................................... 384
Paintwork, painted body
components ................................ 384Engine cleaning ..........................384
Vehicle washing .........................384
Ornamental moldings ................385
Headlamps, taillamps,
turn signal lenses ......................385
Cleaning the Distronic
system sensor .............................386
Cleaning the parktronic
system sensors ...........................386
Wiper blades ...............................387
Light alloy wheels ......................388
Instrument cluster .....................388
Steering wheel and
gear selector lever ......................388
Cup holder ...................................388
Seat belts .....................................389
Headliner and shelf
below rear window .....................389
Leather upholstery .....................389
Hard plastic trim items .............389
Plastic and rubber parts ............389

32 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
General notes on the central locking system
If the electronic key is inserted in the starter switch, the
vehicle cannot be locked or unlocked with the remote
control.
If the vehicle cannot be locked or unlocked:
•Aim transmitter eye at a receiver on either front
door handle. Check the batteries of the electronic
key, see page 371, or synchronize the remote
control, see page 373.
•Use the mechanical key to unlock the vehicle. To
start engine, insert the electronic key in the starter
switch. There could be a slight delay until the
electronic key can be turned in the starter switch.
•Vehicles with KEYLESS-GO only:
A KEYLESS-GO-card must be recognized by the
system as being outside the vehicle to enable the
vehicle to be locked or unlocked (maximum distance
between card and doors or trunk is approx. 3 ft.
(1 m). Check the location of the KEYLESS-GO-card,
see page 36. Check the batteries of the KEYLESS-
GO-card, see page 374. The trunk lid will open
automatically if a KEYLESS-GO card is detected in
the trunk, see page 36.Note:
If neither the remote control nor KEYLESS-GO system
functions, use the mechanical key to unlock or lock the
vehicle. To start engine, insert the electronic key in the
starter switch. There could be a slight delay until the
electronic key can be turned in the starter switch.
Important!
When unlocking the driver’s door with the mechanical
key, the exterior lamps will flash and the alarm will
sound.
To cancel the alarm, insert the electronic key in the
starter switch, or press buttonŒ or‹ on the
electronic key; or with the optional KEYLESS-GO-
system, when carrying a KEYLESS-GO-card, by grasping
a door handle or pressing the start- / stop button on the
gear selector lever.

35 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Locking and unlocking with remote control
Unlocking:
Press transmit button Œ. All turn signal lamps blink
once to indicate that the vehicle is unlocked.
The remote control can be programmed for two kinds of
unlocking modes (see below):
Selective unlocking mode –
Press transmit button Œ o nce to un lock dr iver’s d oor
and fuel filler flap.
Press transmit button Πtwice to unlock all doors,
fuel filler flap, and trunk.
Global unlocking mode –
Press transmit button Πonce to unlock all doors,
fuel filler flap, and trunk.
Notes:
If the trunk was previously locked separately, it will
remain locked, see page 51.
The presently active unlocking mode (selective or
global) can only be determined by unlocking the vehicle
with the remote control (see below for changing mode).If within 40 seconds of unlocking with the remote
control, neither door nor trunk is opened, the electronic
key is not inserted in the starter switch, or the central
locking switch is not activated, the vehicle will
automatically lock.
Locking:
Press transmit button ‹ once. All turn signal lamps
blink three times to indicate that the vehicle is locked. If
they do not blink three times, a door or trunk is not
properly closed.
Note:
If the vehicle cannot be locked or unlocked by pressing
the transmit button, then it may be necessary to change
the batteries in the electronic key (if ok, battery check
lamp in electronic key will light briefly when pressing
transmit button) or to synchronize the remote control,
see pages 371 and 373.
Choosing global or selective mode on remote control
Press and hold transmit buttons‹ andŒ
simultaneously for five seconds to reprogram the
remote control. Battery check lamp will blink two times
indicating the completed mode change.

44 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Note:
If the windows and sliding / pop-up roof cannot be
operated automatically by pressing the transmit button
of t he r emote con trol t hen it may b e ne ces sary to change
the batteries in the electronic key (if ok, battery check
lamp in electronic key will light briefly when pressing
transmit button), or to synchronize the remote control,
see page 371 and 373.
Convenience feature
(Operation with KEYLESS-GO)
Continue to press lock button on door handle after
locking the vehicle.
The windows and sliding / pop-up roof begin to close
after approx. 1 second.
To interrupt closing procedure, release lock button. To
reverse direction (within 2 seconds after closing), pull
and hold door handle. Opening of windows starts and
continues for as long as the door handle is held but the
door not opened.Ensure that all side windows and the sliding / pop-up
roof are properly closed before leaving the vehicle.
Wa r n i n g !
Never operate the windows or sliding / pop-up roof
if there is the possibility of anyone being harmed
by the closing procedure.In case the procedure causes potential danger, the
procedure can be immediately halted by releasing
the lock button. To reverse direction of movement
pull and hold outside door handle.

281 Driving systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Notes:
The yellow ESP warning lampv in the speedometer
dial comes on with the electronic key in starter switch
position 2. It should go out with the engine running.
If the ESP warning message is displayed, a malfunction
has been detected in the system. Only partial engine
output will be available.
Have the ESP checked at your authorized
Mercedes-Benz Center as soon as possible.
For ESP warning message, see page 307.
With the ABS malfunctioning, the ESP is also switched
off.
Driving the vehicle with varied size tires will cause the
wheels to rotate at different speeds, therefore the ESP
may activate (yellow ESP warning lamp in speedometer
dial comes on). For this reason, all wheels, including the
spare wheel, must have the same tire size. When testing the parking brake on a brake test
dynamometer, the engine must be shut off. Otherwise,
the ESP will immediately be engaged and will apply the
rear wheel brakes.
In winter operation, the maximum effectiveness of the
ESP is only achieved with Mercedes-Benz recommended
M+S rated radial-ply tires and / or snow chains.
Synchronizing ESP
If the power supply was interrupted (battery
disconnected or empty), the ESP warning message may
be displayed with the engine running.
Turn steering wheel completely to the left and then to
the right. The ESP warning message should go out.

335 Contents – Practical hints
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Practical hintsFirst aid kit .....................................336
Stowing things in the vehicle ......336
Fuses ................................................337
Hood .................................................339
Checking engine oil level .............342
Automatic transmission
fluid level ...................................343
Active body control (ABC)
fluid level ...................................343
Coolant level ...................................344
Adding coolant ...........................344
Windshield and headlamp
washer system ...........................345
Windshield and headlamp
washer fluid mixing ratio .........345Spare wheel, vehicle tools,
storage compartment ............... 346
Vehicle jack .................................... 347
Wheels ............................................ 348
Tire Replacement ....................... 348
Rotating wheels ......................... 349
Spare wheel .................................... 349
Changing wheels ........................... 351
Tire inflation pressure ................. 356
Battery ............................................. 357
Jump starting ................................. 359
Towing the vehicle ........................ 361
Exterior lamps ............................... 364
Headlamp assembly .................. 365
Taillamp assemblies .................. 368Changing batteries in
the electronic key ..................... 371
Synchronizing
remote control ............................373
Changing batteries in the
KEYLESS-GO-card ..................... 374
Emergency engine
shut-down .................................. 376
Fuel filler flap,
manual release .......................... 376
Emergency operation of
sliding/pop-up roof ...................377
Replacing wiper blades .................378
Roof rack .........................................380

358 Battery
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Therefore, we strongly recommend that you have the
battery charge checked frequently, and corrected if
necessary, especially if you use the vehicle less than
approximately 200 miles (300 km) per month,
mostly for short distance trips, or if it is not used for
long periods of time.
Only charge a battery with a battery charger after the
battery has been disconnected from the vehicle’s
electrical circuit.
Always disconnect the battery negative lead first and
connect last.
When removing and connecting the battery, always
make sure that all electrical consumers are off and the
electronic key is in starter switch position 0. The
battery, its filler caps, the vent tube and the opposite
plug must always be securely installed when the vehicle
is in operation.
While the engine is running the battery terminal clamps
must not be loosened or detached, otherwise the
generator and other electronic components would be
damaged.Note:
The gear selector lever will remain locked in
position “P” and the electronic key cannot be turned in
the starter switch, if the vehicle battery disconnected or
discharged.
After reconnecting the battery also set the clock (see
COMAND operator’s manual) resynchronize the front
seat head restraints, the express feature of the power
windows, the sliding / pop-up roof, and the electronic
stability program (see head restraints on page 68, power
windows on page 184, sliding/pop-up roof on page 189,
and electronic stability program on page 280).
Battery recycling
Batteries contain materials that can harm the
environment with improper disposal.
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.

373 Electronic key
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Important!
Batteries contain materials that can harm the
environment if disposed of improperly. Recycling of
batteries is the preferred method of disposal. For
disposal, please follow manufacturer’s recommendation
on battery package.
Replacement Battery:
Lithium, type CR 2025 or equivalent.Synchronizing remote control
The remote control may have to be resynchronized, if
the vehicle cannot be locked or unlocked.
To synchronize insert electronic key in starter switch.
The remote control should once again be operational.