ESP Button MERCEDES-BENZ S430 2004 W220 Owner's Manual
Page 24 of 435
23 At a glance
Instrument cluster
Item
Page
1
Coolant temperature gauge
132
2
Fuel gauge with:Fuel reserve warning lamp
308
3
LLeft turn signal 
indicator lamp
47
KRight turn signal 
indicator lamp
4
Speedometer with:vESP warning lamp
308
lDistance warning 
lamp
Vehicles without Distronic*: 
Warning lamp without func-
tion. It illuminates when the 
ignition is on. It should go 
out when the engine is run-
ning.
307
5
Tachometer
133
6
Right display with:<Seat belt telltale
308
Item
Page
AHigh beam headlamp 
indicator
48
-Antilock Brake Sys-
tem (ABS) warning 
lamp
304
7
Reset button 
131
8
Display with:
Program mode
170
Gear range indicator
166
Digital clock (see 
COMAND operating in-
structions)
9
Multifunction display 
with:
Trip odometer
132
Main odometer
132
Stored speed for:
Cruise control
203
Distronic*
206
Item
Page
a
Outside temperature indica-
tor
133
b
Left display with:1Supplemental 
restraint system 
indicator lamp
310
;Brake warning lamp, 
USA only
305
3Brake warning lamp, 
Canada only?Engine malfunction 
indicator lamp, USA 
only
306
±Engine malfunction 
indicator lamp, 
Canada onlyHTire pressure warning 
lamp
287,
309
c
Knob for instrument cluster 
illumination
131 
Page 31 of 435
30 Getting startedUnlocking
The “Getting started” section provides an 
overview of the vehicle’s most basic func-
tions. First-time Mercedes-Benz owners 
should pay special attention to the infor-
mation given here.
If you are already familiar with the basic 
functions described here, the “Controls in 
detail” section will provide you with further 
information. The corresponding page refer-
ences are located at the end of each seg-
ment.
Unlocking
Unlocking with the SmartKeySmartKey with remote control 1‹Lock button
2ŠUnlock button for trunk lid
3ŒUnlock button
4ÂPanic button
Press unlock button Œ on the 
SmartKey.
All turn signal lamps flash once. The 
locking knobs in the doors move up.
Get in the vehicle and insert the 
SmartKey in the starter switch.
For more information, see “Locking and 
unlocking” (
page 88). 
Page 33 of 435
32 Getting startedUnlockingUnlocking with KEYLESS-GO*
If your vehicle is equipped with the 
KEYLESS-GO function, your vehicle checks 
whether the SmartKey with KEYLESS-GO is 
valid when you grasp the door handle. If 
your SmartKey with KEYLESS-GO is valid, 
the doors will unlock, and you can open 
them.
The function of the SmartKey overrules the 
KEYLESS-GO function.
Grasp the outside door handle.
All turn signal lamps flash once. The 
locking knobs in the doors move up.
If the SmartKey is inside the vehicle, press-
ing the KEYLESS-GO start/stop button on 
the gear selector lever corresponds to 
turning the SmartKey to the various starter 
switch positions.iTo unlock the vehicle, the SmartKey 
with KEYLESS-GO must be outside the 
vehicle, no further than approximately 
3 feet (1 meter) away from the door. 
Warning!
G
When leaving the vehicle, always remove the 
SmartKey from the starter switch, take the 
SmartKey with KEYLESS-GO with you and 
lock your vehicle. Do not leave children un-
attended in the vehicle, or with access to an 
unlocked vehicle. Unsupervised use of vehi-
cle equipment may cause an accident 
and/or serious personal injury. 
Page 54 of 435
53 Getting started
Parking and locking
Switching off headlamps
Turn the exterior lamp switch toM.
For more information, see “Lighting” 
(
page 124).
Turning off the engine 
Place the gear selector lever in 
positionP.
Turning off with the SmartKey
Turn the SmartKey in the starter switch 
(page 31) to position0 and remove 
it. 
The immobilizer is activated.
Press the seat belt release button 
(page 41).
Allow the retractor to completely re-
wind the seat belt by guiding the latch 
plate.
After exiting the vehicle press the lock 
button‹ on the SmartKey 
(page 30).
All turn signal lamps flash three times. 
The locking knobs on the doors move 
down.
iAlways set the parking brake in addi-
tion to shifting to position P.
On steep slopes, turn the front wheels 
towards the curb.
iThe SmartKey can only be removed 
from the starter switch with the gear 
selector lever in positionP.iWith the SmartKey removed and the 
driver’s door open, a warning sounds if 
the vehicle’s exterior lamps are not 
switched off.
Warning!
G
To prevent possible personal injury, always 
keep hands and fingers away from the door 
openings when closing the doors. Be espe-
cially careful when small children are 
around.
Before closing doors, make sure there is no 
possibility of someone getting caught in a 
door during closing. 
Page 55 of 435
54 Getting startedParking and lockingFor more information, see “Locking and 
unlocking” (
page 88).Turning off the engine with 
KEYLESS-GO* 
Place the gear selector lever in 
positionP.
Press the KEYLESS-GO start/stop 
button to shut off the engine.
With the driver's door closed, the start-
er switch is now in position1. With the 
driver’s door opened, the starter switch 
is set to position0, same as SmartKey 
removed from starter switch 
(page 31).
Press the seat belt release button 
(page 41).
Allow the retractor to completely re-
wind the seat belt by guiding the latch 
plate.
Warning!
G
When leaving the vehicle, always remove the 
SmartKey from the starter switch and lock 
your vehicle. Do not leave children unat-
tended in the vehicle, or with access to an 
unlocked vehicle. Unsupervised use of vehi-
cle equipment may cause an accident 
and/or serious injury.
!If you hear a warning signal, you have 
either
forgotten to turn off the lights be-
fore opening the driver’s door 
or
tried to turn off the engine while the 
gear selector lever is not inP.
Turn off the lights or place the gear se-
lector lever inP.
Warning!
G
To prevent possible personal injury, always 
keep hands and fingers away from the door 
openings when closing the doors. Be espe-
cially careful when small children are 
around.
Before closing doors, make sure there is no 
possibility of someone getting caught in a 
door during closing. 
Page 80 of 435
79 Safety and Security
Driving safety systems
ESP
The Electronic Stability Program (ESP) 
monitors the vehicle's traction (force of 
adhesive friction between the tires and the 
road surface) and handling.
The ESP recognizes when a wheel is spin-
ning or if the vehicle starts to skid. By ap-
plying brakes to the appropriate wheel and 
by limiting engine output, the ESP works to 
stabilize the vehicle. The ESP is especially 
useful while driving off and on wet or slip-
pery road surfaces.
The ESP warning lamp v in the instru-
ment cluster flashes when the ESP is en-
gaged.
The ESP warning lamp v in the instru-
ment cluster comes on when you turn the 
SmartKey in the starter switch to 
position2 or press the KEYLESS-GO* 
start/stop button twice. It goes out when 
the engine is running.
Warning!
G
The BAS cannot prevent the natural laws of 
physics from acting on the vehicle, nor can 
it increase braking efficiency beyond that af-
forded by the condition of the vehicle brakes 
and tires or the traction. The BAS cannot 
prevent accidents, including those resulting 
from excessive speed in turns, following an-
other vehicle too closely, or hydroplaning. 
Only a safe, attentive, and skillful driver can 
prevent accidents. The capabilities of a BAS 
equipped vehicle must never be exploited in 
a reckless or dangerous manner which 
could jeopardize the user’s safety or the 
safety of others.
Warning!
G
Never switch off the ESP when you see the 
ESP warning lamp v flashing in the in-
strument cluster. In this case proceed as fol-
lows:
While driving off, apply as little throttle 
as possible.
While driving, ease up on the accelera-
tor.
Adapt your speed and driving style to 
the prevailing road conditions.
Failure to observe these guidelines could 
cause the vehicle to skid.
The ESP cannot prevent accidents resulting 
from excessive speed. 
Page 81 of 435
80 Safety and SecurityDriving safety systems
For more information, see “Practical hints” 
(page 303).Switching off the ESP
To improve the vehicle's traction, turn off 
the ESP in driving situations where it would 
be advantageous to have the drive wheels 
spin and thus cut into surfaces for better 
grip such as:
starting out on slippery surfaces and in 
deep snow in conjunction with snow 
chains
in sand or gravel
Warning!
G
The ESP cannot prevent the natural laws of 
physics from acting on the vehicle, nor can 
it increase the traction afforded. The ESP 
cannot prevent accidents, including those 
resulting from excessive speed in turns, or 
hydroplaning. Only a safe, attentive, and 
skillful driver can prevent accidents. The ca-
pabilities of an ESP equipped vehicle must 
never be exploited in a reckless or danger-
ous manner which could jeopardize the us-
er’s safety or the safety of others.!The ESP will only function properly if 
you use wheels of the recommended 
tire size (
page 384).
iDistronic* is switched off when ESP is 
activated.
!Vehicles without 4MATIC: 
Because of the ESP’s automatic opera-
tion, the engine and ignition must be 
shut off (SmartKey in starter switch 
position0 or1 or KEYLESS-GO 
start/stop button* in position0 or1) 
when: 
the parking brake is being tested on 
a brake test dynamometer
the vehicle is being towed with the 
front/rear axle raised
Active braking action through the ESP 
may otherwise seriously damage the 
brake system.
For information on vehicles with 
4MATIC, see “Four wheel electronic 
traction system (4MATIC) with the 
ESP” (
page 82).
Warning!
G
The ESP should not be switched off during 
normal driving other than in the circum-
stances described below. Disabling of the 
system will reduce vehicle stability in stan-
dard driving maneuvers.iDistronic* cannot be activated when 
the ESP has been deactivated. 
Page 83 of 435
82 Safety and SecurityDriving safety systemsFour wheel electronic traction system (4MATIC) with the ESP
Models with all-wheel drive only:
The 4MATIC improves the vehicle’s ability 
to use available traction, e.g. during winter 
operation in mountains under snowy con-
ditions, by applying power to all four 
wheels.
Warning!
G
If you see the ESP warning lamp v flash-
ing in the speedometer dial, proceed as fol-
lows:
While driving off, apply as little throttle 
as possible.
While driving, ease up on the accelera-
tor.
Adapt your speed and driving style to 
the prevailing road conditions.
Failure to observe these guidelines could 
cause the vehicle to skid.
The ESP cannot prevent accidents resulting 
from excessive speed.!Do not tow with one axle raised.
Otherwise the transfer case can be 
damaged, which is not covered by the 
Mercedes-Benz Limited Warranty.
!Performance testing must only be con-
ducted on a two-axle dynamometer.
Otherwise the transfer case can be 
damaged, which is not covered by the 
Mercedes-Benz Limited Warranty.!Because of the ESP’s automatic opera-
tion, the engine and ignition must be 
shut off (SmartKey in starter switch 
position0 or1 or KEYLESS-GO 
start/stop button* in position0 or1) 
when the parking brake is being tested 
on a brake test dynamometer.
Active braking action through the ESP 
may otherwise seriously damage the 
front or rear axle brake system.
Operational tests with the engine run-
ning can only be conducted on a 
two-axle dynamometer. 
Page 85 of 435
84 Safety and SecurityAnti-theft systemsArming the alarm system
The alarm system is armed after locking 
the vehicle with the SmartKey or 
KEYLESS-GO*. The turn signal lamps flash-
es three times to indicate that the alarm 
system is activated. The indicator lamp in 
the central locking switch (
page 107) 
will flash after approximately ten seconds 
when the alarm system is completely 
armed.Disarming the alarm system
The alarm system is disarmed when you 
unlock your vehicle with the SmartKey or 
KEYLESS-GO*. The turn signal lamps flash 
once to indicate that the alarm system is 
deactivatedCanceling the alarm
To cancel the alarm:
With the SmartKey
Insert the SmartKey in the starter 
switch.
or
Press the Œ or ‹ button on the 
SmartKey.
With KEYLESS-GO*
Grasp the outside door handle.
or
Press the KEYLESS-GO* start/stop 
button.
iIf the alarm stays on for more than 
20 seconds, an emergency call is initi-
ated automatically by the Tele Aid sys-
tem (
page 242) provided Tele Aid 
service was subscribed to and properly 
activated, and that necessary cellular 
service and GPS coverage are avail-
able.
iIf the turn signal lamps does not flash 
three times one of the following ele-
ments may not be properly closed:
a door
the trunk lid
the hood
Close the respective element and lock 
the vehicle again. 
Page 89 of 435
88 Controls in detailLocking and unlocking
In the “Controls in detail” section you will 
find detailed information on how to oper-
ate the equipment installed in your vehicle. 
If you are already familiar with the basic 
functions of your vehicle, this section will 
be of particular interest to you.
To quickly familiarize yourself with the ba-
sic functions of the vehicle, refer to the 
“Getting started” section of this manual. 
The corresponding page numbers are giv-
en at the beginning of each segment.
Locking and unlocking
SmartKey
Your vehicle comes supplied with two 
SmartKeys, each with remote control and 
a removable mechanical key. The locking 
tabs for the mechanical key portion of the 
two SmartKeys are a different color to help 
distinguish each SmartKey unit.
The SmartKey provides an extended oper-
ating range. To prevent theft, however, it is 
advisable to only unlock the vehicle when 
you are in close proximity to it.
The SmartKey centrally locks and unlocks:
the doors
the trunk
the fuel filler flap
SmartKey with remote control1‹ Lock button
2Š Unlock button for trunk lid
3Locking tab for mechanical key 
4Œ Unlock button
5Battery check lamp
6Â Panic button (
page 76)