ECU MERCEDES-BENZ SL-Class 2001 R129 Owner's Manual

2 Contents
Storing steering column
position in memory ..................... 70
Rear view mirrors ............................ 71
Inside rear view mirror ............... 71
Antiglare night position .............. 71
Exterior rear view mirrors .......... 72
Storing mirror positions in
memory .......................................... 73
Instrument cluster ........................... 74
Indicator lamps in the
instrument cluster ....................... 76
Additional function indicator
lamps .............................................. 77
Instrument lamps ......................... 77
Display illumination .................... 77
Coolant temperature gauge ........ 78
Outside temperature
indicator ........................................ 78
Trip odometer ............................... 79
Clock .............................................. 79
Tachometer .................................... 79
Flexible service system (FSS) ........ 80
Engine oil level indicator in odometer
display field ................................. 82Fuel consumption gauge ................ 83
Engine oil temperature gauge ....... 83
Engine oil consumption ................. 83
Exterior lamp switch ....................... 84
Standing lamps ............................ 85
Night security illumination ....... 85
Combination switch ........................ 86
Blocked windshield wiper .......... 88
Windshield wiper smears .......... 88
Windshield and
headlamp washer fluid
mixing ratio .................................. 88
Hazard warning flasher
switch ........................................... 89
Automatic climate control .............. 90
Display and controls ................... 92
Basic setting -
automatic mode ........................... 93
Economy ........................................ 93
Special settings ............................ 94
Audio and telephone, operation .... 98
Power windows ............................... 116
Express opening of
door windows .............................. 117Synchronizing
power windows ............................117
Roll bar .............................................118
Interior lighting ............................. 120
Interior lamps ............................. 120
Reading lamps ............................ 120
Entrance lamps in footwells,
exit lamps in doors .................... 120
Sunshade, manual ......................... 121
Power sunshade ............................. 122
Sun visors ....................................... 123
Illuminated vanity mirror ............ 123
Interior ............................................ 124
Storage compartment
(eyeglasses compartment)
in the dashboard ....................... 124
Interior central
locking system ............................ 125
Integration with vehicle
central locking system .............. 126
Separate locking of storage
compartments ............................. 126
Armrest ........................................... 127
Console storage compartments ... 127

27 Contents - Operation
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Night security illumination ........ 85
Combination switch ........................ 86
Blocked windshield wiper .......... 88
Windshield wiper smears ........... 88
Windshield and
headlamp washer fluid
mixing ratio .................................. 88
Hazard warning flasher switch ..... 89
Automatic climate control .............. 90
Display and controls .................... 92
Basic setting -
automatic mode ............................ 93
Economy ........................................ 93
Special settings ............................ 94
Audio and telephone, operation .... 98
Power windows ................................116
Express opening of
door windows ...............................117
Synchronizing
power windows ............................117
Roll bar .............................................118Interior lighting ............................. 120
Interior lamps ............................. 120
Reading lamps ............................ 120
Entrance lamps in footwells,
exit lamps in doors .................... 120
Sunshade, manual ..........................121
Power sunshade ............................. 122
Sun visors ....................................... 123
Illuminated vanity mirror ............ 123
Interior ............................................ 124
Storage compartment
(eyeglasses compartment)
in the dashboard ...................... 124
Interior central
locking system ........................... 125
Integration with vehicle
central locking system .............. 126
Separate locking of storage
compartments ............................ 126
Armrest ........................................... 127
Console storage compartments ... 127Cup holder ...................................... 128
Parcel net in
passenger footwell .................... 128
Door pockets ................................... 129
Rear storage compartment ........... 129
Ashtray with lighter ...................... 130
Lighter ............................................. 131
Telephone, general ........................ 132
Garage door opener ....................... 133
Hardtop or panorama roof ............ 137
Removing hardtop ...................... 137
Attaching hardtop ...................... 140
Soft top ............................................ 143
Lowering soft top ........................ 144
Raising soft top ........................... 145
Wind screen .................................... 148
Antenna ........................................... 151

29 Central locking system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Note:
Do not give the master key to an unauthorized person.
Obtaining replacement keys
Your vehicle is equipped with a theft deterrent locking
system requiring a special key manufacturing process.
For security reasons, replacement keys can only be
obtained from your authorized Mercedes-Benz Center.
Central locking system
Remote control
Due to the extended operational range of the remote
control, it could be possible to unintentionally lock or
unlock the vehicle by pressing the transmit button.
The vehicle doors, trunk, storage compartment in
armrest, and fuel filler flap can be centrally locked and
unlocked via remote control.1Transmit button
‹ Locking
ΠUnlocking
ŠOpening trunk
2PANIC button
3Release button for master key
4Transmitter eye and lamp for battery check

47 Seats
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Important!
Prior to operating the vehicle, the driver should adjust
the seat height for proper vision as well as fore/aft
placement and backrest angle to insure adequate
control, reach, operation, and comfort. The head
restraint should also be adjusted for proper height.
Adjust head restraint to support the back of the head
approximately at ear level. See also airbag section for
proper seat positioning on page 60.
In addition, also adjust the steering wheel to ensure
adequate control, reach, operation and comfort.
Both the inside and outside rear view mirrors should be
adjusted for adequate rearward vision.
Fasten seat belts. Infants and small children should be
seated in a properly secured restraint system that
complies with U.S. Federal Motor Vehicle Safety
Standard 213 and Canadian Motor Vehicle Safety
Standard 213.
All seat, head restraint, rear view mirror, and steering
wheel adjustments as well as fastening of seat belts
should be done before the vehicle is put into motion.
Wa r n i n g !
Children 12 years old and under must never ride in
this vehicle, except in a Mercedes-Benz authorized
BabySmart
TM compatible child seat, which operates
with the BabySmart
TM system installed in the
vehicle to deactivate the passenger side front
airbag when it is properly installed.
Otherwise they will be struck by the airbag when it
inflates in a crash. If this happens, serious or fatal
injury will result.Infants and small children must be seated in an
appropriate infant or child restraint system, which
is properly secured with the vehicle’s seat belt,
fully in accordance with the child seat
manufacturer’s instructions.A child’s risk of serious or fatal injuries is
significantly increased if the child restraints are
not properly secured in the vehicle and the child is
not properly secured in the child restraint.

52 Restraint systems
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Seat belts and integrated restraint system
Your vehicle is equipped with lap-shoulder seat belts,
emergency tensioning retractors for the seat belts, as
well as airbags and knee bolsters.
Seat belts
Important!
Laws in most states and all Canadian provinces require
seat belt use.
All states and provinces require use of child restraints
that comply with U.S. Federal Motor Vehicle Safety
Standard 213 and Canadian Motor Vehicle Safety
Standard 213.
All child restraint systems are designed to be secured in
vehicle seats by lap belts or the lap belt portion of a lap-
shoulder belt.
For your safety and that of your passenger we strongly
recommend their use.
Note:
For cleaning and care of the seat belts, see page 266.
Wa r n i n g !
The seat belts provide protection only with the
backrest locked in place. If the seat belt warning
lamp< does not go out, but is instead lit
continuously, then a backrest is not engaged in its
lock.Never ride in a moving vehicle with the backrest
reclined. Sitting in an excessively reclined position
can be dangerous. You could slide under the seat
belt in a collision. If you slide under it, the belt
would apply force at the abdomen or neck. That
could cause serious or even fatal injuries. The
backrest and seat belt provide the best restraint
when the wearer is in an upright position and the
belt is properly positioned on the body.

53 Restraint systems
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Seat belt nonusage warning system
With the key in steering lock position 2, a warning
sounds for a short time if the driver’s seat belt is not
fastened.
BabySmart
TM is a trademark of Siemens Automotive Corp.
Wa r n i n g !
Failure to wear and properly fasten and position
your seat belt greatly increases your risk of
injuries and their likely severity in an accident.
You and your passenger should always wear seat
belts.If you are ever in an accident, your injuries can be
considerably more severe without your seat belt
properly buckled. Without your seat belt buckled,
you are much more likely to hit the interior of the
vehicle or be ejected from it. You can be seriously
injured or killed.In the same crash, the possibility of injury or death
is lessened if you are wearing your seat belt.Never let more people ride in the vehicle than there
are seat belts available. Be sure everyone riding in
the vehicle is correctly restrained with a separate
seat belt.
Wa r n i n g !
Children 12 years old and under must never ride in
this vehicle, except in a Mercedes-Benz authorized
BabySmart
TM compatible child seat, which operates
with the BabySmart
TM system installed in the
vehicle to deactivate the passenger side front
airbag when it is properly installed. Otherwise they
will be struck by the airbag when it inflates in a
crash. If this happens, serious or fatal injury can
result.
Infants and small children must be seated in an
appropriate infant or child restraint system, which
is properly secured with the vehicle’s seat belt,
fully in accordance with the child seat
manufacturer’s instructions.A child’s risk of serious or fatal injuries is
significantly increased if the child restraints are
not properly secured in the vehicle and the child is
not properly secured in the child restraint.

57 Restraint systems
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
• Never wear the shoulder belt under your arm,
against you neck or off your shoulder. In a
crash, your body would move too far forward.
That would increase the chance of head and
neck injuries. The belt would also apply too
much force to the ribs or abdomen, which
could severely injure internal organs such as
your liver or spleen.• Each seat belt must never be used for more
than one person at a time. Do not fasten a seat
belt around a person and another person or
other objects.• Belts should not be worn twisted. In a crash,
you wouldn’t have the full width of the belt to
manage impact forces. The twisted belt against
your body could cause injuries.• Pregnant women should also use a lap-
shoulder belt. The lap belt portion should be
positioned as low as possible on the hips to
avoid pressure on the abdomen.• Never place your feet on the instrument panel
or on the seat. Always keep both feet on the
floor in front of the seat.
Wa r n i n g !
USE CHILD RESTRAINTS PROPERLY.
Children 12 years old and under must never ride in
this vehicle, except in a Mercedes-Benz authorized
BabySmart
TM compatible child seat, which operates
with the BabySmart
TM system installed in the
vehicle to deactivate the passenger side front
airbag when it is properly installed. Otherwise they
will be struck by the airbag when it inflates in a
crash. If this happens, serious or fatal injury will
result.
Infants and small children must be seated in an
appropriate infant or child restraint system, which
is properly secured with the vehicle’s seat belt,
fully in accordance with the child seat
manufacturer’s instructions.A child’s risk of serious or fatal injuries is
significantly increased if the child restraints are
not properly secured in the vehicle and the child is
not properly secured in the child restraint.Adjust the passenger seat as far as possible
rearward from the dashboard when the seat is
occupied.

68 Restraint systems
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
When you sell the vehicle we strongly urge you to give
notice to the subsequent owner that it is equipped with
an “SRS” by alerting him to the applicable section in the
Operator’s Manual.Infant and child restraint systems
Use only a BabySmart
TM compatible child restraint in
this vehicle.
We recommend that all infants and children be properly
restrained at all times while the vehicle is in motion.
The passenger lap-shoulder belt has a special seat belt
retractor for secure fastening of a child restraint.
To fasten a child restraint follow child restraint
instructions for routing. Then pull shoulder belt out
completely. Slide switch located on side of passenger
seat to position N. Let the belt retract. During the
seat belt retraction a ratcheting sound can be heard to
indicate that the special seat belt retractor is activated.
The belt is now locked. Push down on child restraint to
take up any slack.
To deactivate, release seat belt buckle and let seat belt
retract completely. The seat belt can again be used in
the usual manner.
• For your protection and the protection of
others, when scrapping the airbag unit or
emergency tensioning retractor, our safety
instructions must be followed. These
instructions are available at your authorized
Mercedes-Benz Center.• Given the considerable deployment speed and
the textile structure of the airbags, there is the
possibility abrasions or other injuries
resulting from airbag deployment.
Wa r n i n g !
Never release the seat belt buckle while vehicle is
in motion, since the special seat belt retractor will
be deactivated.

69 Restraint systems
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Important!
The use of infant or child restraints is required by law in
all 50 states and all Canadian provinces.
Infants and small children should be seated in an
appropriate infant or child restraint system properly
secured by a lap-shoulder belt, and that complies with
U.S. Federal Motor Vehicle Safety Standard 213 and
Canadian Motor Vehicle Safety Standard 213.
A statement by the child restraint manufacturer of
compliance with this standard can be found on the
instruction label on the restraint and in the instruction
manual provided with the restraint.
When using any infant or child restraint system, be sure
to carefully read and follow all manufacturer’s
instructions for installation and use.
Please read and observe warning labels affixed to inside
of vehicle and to infant or child restraints.
U.S.A. Mod els only:
Since 1986 all U.S. child restraints comply with
U.S. regulations without the use of a tether strap.
Wa r n i n g !
Children 12 years old and under must never ride in
this vehicle, except in a Mercedes-Benz authorized
BabySmart
TM compatible child seat, which operates
with the BabySmart
TM system installed in the
vehicle to deactivate the passenger front airbag
when it is properly installed. Otherwise they will
be struck by the airbag when it inflates in a crash.
If this happens, serious or fatal injury can result.
Infants and small children must be seated in an
appropriate infant or child restraint system, which
is properly secured with the vehicle’s seat belt,
fully in accordance with the child seat
manufacturer’s instructions.Infants and small children should never share a
seat belt with another occupant. During an
accident, they could be crushed between the
occupant and seat belt.When the child restraint is not in use, remove it
from the vehicle or secure it with the seat belt to
prevent the child restraint from becoming a
projectile in the event of an accident.

85 Exterior lamp switch
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Standing lamps
When the vehicle is parked on the street the standing
lamps (right or left side parking lamps) can be turned
on, making the vehicle more visible to passing vehicles.
The standing lamps cannot be operated with the key in
steering lock position 2.
Daytime running lamp mode
When the engine is running and the selector lever is in
a driving position, the low beam headlamps (includes
parking lamps, side marker lamps, taillamps and
license plate lamps) are automatically switched on.
When shifting from a driving position to position “N”
or “P”, the low beam switches off (2 seconds delay).
For nighttime driving the exterior lamp switch should
be turned to position B to permit activation of the
high beam headlamps.Night security illumination
When exiting the vehicle after driving with the exterior
lamps on, they switch on again for added illumination
for approximately 30 seconds after closing the last door.
The lamp-on time period can be changed at your
Mercedes-Benz Center.