heating MERCEDES-BENZ SL500 2004 R230 Owner's Manual

ContentsSafety and Security........................... 57
Occupant safety................................... 58
Airbags ........................................... 59
Seat belts ....................................... 65
Roll bar ........................................... 69
Children in the vehicle.................... 70
Panic alarm .......................................... 74
Activating ....................................... 74
Deactivating ................................... 74
Driving safety systems ......................... 75
ABS ................................................ 76
BAS ................................................ 77
ESP................................................. 78
SBC brake system .......................... 81
Anti-theft systems................................ 84
Immobilizer..................................... 84
Anti-theft alarm system .................. 85
Tow-away alarm ............................. 86
Controls in detail............................... 89
Locking and unlocking ......................... 90
SmartKey ....................................... 90
SmartKey with KEYLESS-GO* ........ 93
Opening the doors from the
inside ............................................. 99
Opening the trunk .......................... 99
Closing the trunk lid ..................... 102
Trunk lid emergency release ........ 102
Separately locking the trunk ........ 103
Automatic central locking ............ 105
Locking and unlocking from
the inside ..................................... 105
Seats ................................................. 107
Easy-entry / exit feature ............... 107
Moving the seats forward and
backward ..................................... 108
Lumbar support............................ 108
Multicontour backrest*
(standard on SL 600 and
SL 55 AMG) .................................. 109Seat heating................................. 110
Seat ventilation*
(standard on SL 600) ................... 112
Memory function ............................... 114
Storing positions into memory ..... 115
Recalling positions from memory. 115
Storing exterior rear view mirror
parking position ........................... 115
Lighting ............................................. 117
Exterior lamp switch .................... 117
Combination switch ..................... 120
Hazard warning flasher ................ 121
Interior lighting ............................ 122
Courtesy lighting .......................... 123
Instrument cluster ............................. 124
Instrument cluster illumination .... 124
Coolant temperature gauge ......... 124
Trip odometer .............................. 125
Tachometer.................................. 125
Outside temperature indicator ..... 126

28 At a glanceDoor control panel
Door control panel
Item
Page
1
Door handle
99
2
Switches for open-
ing/closing front and rear
side windows
181
3
Memory function (for stor-
ing seat, mirror and steer-
ing wheel settings)
114
4
Seat heating switch
110
Seat ventilation* switch
112
5
Seat adjustment switch
34,
107
6
Remote trunk lid release
switch
102
7
Door pocket
215

83 Safety and Security
Driving safety systems
The SBC brake servo assistance switches
off automatically

approximately two minutes after you
turned the SmartKey in the starter
switch to position0 or removed the
SmartKey


approximately two minutes after you
pressed the KEYLESS-GO* start/stop
button to turn off the engine or power
supply and opened the driver’s door
(with driver’s door open, the starter
switch is set to position 0, same as
SmartKey removed from starter
switch)


approximately 20 seconds after you
locked the vehicle from outside Note on driving with SBC


Following extended periods of only mi-
nor loads to your brake system, you
should occasionally apply the brakes
when traveling at high speeds. This im-
proves the grip of the brake pads.
After driving on wet or snow-covered
roads, you should apply your brakes
firmly before parking your vehicle. This
produces heat which serves to dry the
brake disks and help prevent corro-
sion.


On long and steep grades, shift to a
lower gear (gear range1, 2, or 3) to
prevent the brakes from overheating
and to reduce brake wear.


After hard braking, it is advisable to
drive on for some time so that the air
stream will cool down the brakes fast-
er.


Only Mercedes-Benz approved compo-
nents (e.g. brake pads) should be in-
stalled on your vehicle. Brake pads not
approved by Mercedes-Benz may im-
pair the safety of your vehicle.
Warning!
G
Be very careful not to endanger other road
users when you apply the brakes.

110 Controls in detailSeatsMassage function (PULSE)
You can reduce muscle tension during long
trips by periodically using the massage
function. 
Press button3.
The indicator lamp on button3 comes
on. The air cushions in the lumbar re-
gion inflate and deflate rhythmically.
Seat heating
Vehicles without seat ventilation*
The switch is located on the door.
1Normal heating
2Rapid heating
Make sure the ignition is switched on.
All the lamps in the instrument cluster
come on.Switching on seat heating

Press lower switch position1.
A red indicator lamp on the switch
comes on.
Switching off seat heating

Press lower switch position1 again.
Switching on rapid seat heating

Press upper switch position2.
Both red indicator lamps on the switch
come on.
iThe massage function switches off au-
tomatically after approximately eight
minutes. The indicator lamp goes out.
iThe seat heating will be automatically
switched off after approximately
30 minutes. iThe system switches to normal heating
mode after approximately five minutes.
Only the right-hand indicator lamp re-
mains lit.

111 Controls in detailSeats
Switching off rapid seat heating
Press upper switch position2 again. Vehicles with seat ventilation*
The switch is located on the door. The red
indicator lamps on the switch indicate the
selected heating level:
1Seat heating switch

Make sure the ignition is switched on.
All the lamps in the instrument cluster
come on.Switching on seat heating

Press upper switch position1 twice.
A red indicator lamp on the switch
comes on.
Switching off seat heating

Press upper switch position1 again.
Switching on rapid seat heating

Press upper switch position1 once.
Both indicator lamps on the switch
come on.
!If one or both of the lamps on the seat
heating switch are flashing, there is in-
sufficient voltage available since too
many electrical consumers are turned
on. The seat heating switches off auto-
matically.
The seat heating will switch back on
again automatically as soon as suffi-
cient voltage is available.
Leveloff
No indicator lamp on
1
One indicator lamp on
2
Two indicator lamps on
iThe seat heating will be automatically
switched off after approximately
30 minutes. iThe system switches to normal heating
mode after approximately five minutes.
Only the right-hand indicator lamp re-
mains lit.

112 Controls in detailSeatsSwitching off rapid seat heating
Press upper switch position1 twice.
Seat ventilation* (standard on SL 600)
The switch is located on the door. The blue
indicator lamps on the switch indicate the
selected ventilation level:
1Seat ventilation switch

Make sure the ignition is switched on.
All the lamps in the instrument cluster
come on.
!If one or both of the lamps on the seat
heating switch are flashing, there is in-
sufficient voltage available since too
many electrical consumers are turned
on. The seat heating switches off auto-
matically.
The seat heating will switch back on
again automatically as soon as suffi-
cient voltage is available.
Level3
Three indicator lamps on
2
Two indicator lamps on
1
One indicator lamp on
off
No indicator lamp on

220 Controls in detailUseful features
Heated steering wheel* (SL 500, SL 600)
The steering wheel heating warms up the
leather area of the steering wheel.
The lever is on the lower left-hand side of
the steering wheel.
1Switching on
2Indicator lamp
3Switching offSwitching on

Switch on ignition.
All lamps in the instrument cluster
come on.

Turn switch at tip of stalk in the direc-
tion of arrow1.
The steering wheel is heated. Indicator
lamp2 comes on.
Switching off

Turn switch at tip of stalk in the direc-
tion of arrow3.
The steering wheel heating is turned
off. Indicator lamp2 goes out.
Warning!
G
Never touch the heating element or sides of
the lighter; they are extremely hot. Hold the
knob only.
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 serious personal
injury.
iThe steering wheel heating does not
turn off automatically.


240 OperationDriving instructionsPower assistance
Brakes
Warning!
G
The brake system requires electrical energy
for operation.
A malfunction in the vehicle’s power supply
or electrical system may impair brake sys-
tem operation and switch it into its emer-
gency operation mode. In such a case, the
red brake warning lamp (
page 284) and
warning messages (
page 291) in the in-
strument cluster come on while driving. To
brake, the driver must then apply signifi-
cantly greater brake pedal pressure and de-
press the pedal much further to obtain the
expected braking effect. If necessary, apply
full pressure to the brake pedal. Brakes are
only applied to the front wheels. Stopping
distance is increased! If there is a malfunc-
tion in the SBC brake system, we recom-
mend that the vehicle be transported with
all wheels off the ground using flatbed or ap-
propriate wheel lift/dolly equipment.
A tow bar must be used if circumstances do
not permit the use of the recommended
towing methods and the vehicle requires
towing with all four wheels on the ground.
Towing the vehicle with all four wheels on
the ground is only permissible for distances
up to 30 miles (50 km) and at a speed not to
exceed 30 mph (50 km/h). For more infor-
mation, see “Towing the vehicle”
(page 365).
With the engine not running, there is no
power assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the ve-
hicle.
Warning!
G
After driving in heavy rain for some time
without applying the brakes or through wa-
ter deep enough to wet brake components,
the first braking action may be somewhat
reduced and increased pedal pressure may
be necessary to obtain expected braking ef-
fect. Maintain a safe distance from vehicles
in front.
Resting your foot on the brake pedal will
cause excessive and premature wear of the
brake pads.
It can also result in the brakes overheating
thereby significantly reducing their effec-
tiveness. It may not be possible to stop the
vehicle in sufficient time to avoid an acci-
dent.

241 Operation
Driving instructions
To help prevent brake disk corrosion after
driving on wet road surfaces (particularly
salted roads), it is advisable to brake the
vehicle with considerable force prior to
parking. The heat generated serves to dry
the brakes.
If your brake system is normally only sub-
jected to moderate loads, you should occa-
sionally test the effectiveness of the
brakes by applying above-normal braking
pressure at higher speeds. This will also
enhance the grip of the brake pads.
If the parking brake is released and the
brake warning lamp in the instrument clus-
ter stays on, there is a malfunction in the
SBC brake system (
page 81) or the
brake fluid level in the reservoir is too low.Brake pad wear or a leak in the system may
be the reason for low brake fluid in the res-
ervoir.
Have the brake system inspected immedi-
ately.
All checks and service work on the brake
system should be carried out by qualified
technicians only. Contact an authorized
Mercedes-Benz Center.
Only install brake pads and brake fluid rec-
ommended by Mercedes-Benz.After hard braking, it is advisable to drive
on for some time, rather than immediately
parking, so the air stream will cool down
the brakes faster.
!Be very careful not to endanger other
road users when you apply the brakes.
Refer to the description of the Brake
Assist System (BAS) (
page 77).
Warning!
G
If other than recommended brake pads are
installed, or other than recommended brake
fluid is used, the braking properties of the
vehicle can be degraded to an extent that
safe braking is substantially impaired. This
could result in an accident.
Be certain to read and observe the warning
notices on brake pad replacement
(page 82).
!When driving down long and steep
grades, relieve the load on the brakes
by shifting into a lower gear to use the
engine’s braking power. This helps pre-
vent overheating of the brakes and re-
duces brake pad wear.

286 Practical hintsWhat to do if …Problem
Possible cause
Suggested solution
D
The red coolant warning lamp
comes on when the engine is
running.
There is insufficient coolant in the reservoir.
If this warning lamp comes on frequently,
there is a leak in the cooling system.
If the coolant level is correct, the electric ra-
diator fan may be broken.

Immediately add coolant to prevent
engine from overheating
(page 258).

Have the cooling system checked.

If the coolant temperature is below
248 °F (120 °C), you can continue
driving to the nearest authorized
Mercedes-Benz Center.

Avoid high engine loads (e.g. driving
uphill) and stop-and-go driving.
D
The red coolant warning lamp
comes on while driving and you
hear a warning sound.
The coolant temperature has exceeded
248 °F (120 °C).

Stop as soon as possible and allow
the engine and coolant to cool down.
Warning!
G
Driving when your engine is badly overheat-
ed can cause some fluids which may have
leaked into the engine compartment to
catch fire. You could be seriously burned.
Steam from an overheated engine can cause
serious burns and can occur just by opening
the engine hood. Stay away from the engine
if you see or hear steam coming from it.
Turn off the engine, get out of the vehicle
and do not stand near the vehicle until the
engine has cooled down.