Page 304 of 409

303 Practical hints
What to do if ...
Problem
Possible cause/consequence
Suggested solutions
<
The red Airbrake warning
lamp comes on while driving
and you hear a warning
sound.
The Airbrake or the central locking system
is malfunctioning.
Notify an authorized Mercedes-Benz Center
immediately.
>
The red gearshift indicator
lamp comes on while you are
driving.
You are driving with the manual shift pro-
gram. The engine is in the overrevving
range.
Shift to the next higher gear. Otherwise the
fuel supply will be interrupted to prevent the
engine from overrevving.
A
The yellow reserve fuel warn-
ing lamp lights up while you
are driving.
The fuel level has fallen into the reserve
range.
Refuel at the nearest gas station
(page 241).
=
The engine oil temperature
indicator comes on in the
tachometer while you are
driving.
The engine oil has not yet reached its
operating temperature.
Warm up the engine and do not drive at full
power until the operating temperature has
been reached.
The symbol will go out as soon as the engine
oil has reached its operating temperature.
Page 306 of 409

305 Practical hints
What to do if ...
Problem
Possible cause/consequence
Suggested solution
H
The yellow warning lamp for the
tire pressure monitoring system
comes on.
The tire pressure monitoring system detects
a loss of pressure in at least one tire.
Bring the vehicle to a halt, avoiding
abrupt steering and braking maneu-
vers. Observe the traffic situation
around you.
Read and observe messages in the
multifunction display.
The warning lamp goes out once the tire
inflation pressure monitor has been reac-
tivated after the tire inflation pressure
has been corrected.
Warning!
G
When the tire pressure monitoring system
warning light is lit, one or more of your tires
is significantly under-inflated. You should
stop in a safe location and check your tires
as soon as possible, and inflate them to the
proper pressure as indicated on the vehi-
cle’s tire information placard. Driving on a
significantly under-inflated tire causes the
tire to overheat and can lead to tire failure.
Under-inflation also reduces fuel efficiency
and tire tread life, and may affect the vehi-
cle’s handling and stopping ability. Each tire,
including the spare, should be checked
monthly when cold and set to the recom-
mended inflation pressure as specified in
the vehicle placard and owner’s manual.
iThe recommended tire inflation pres-
sures for your vehicle can be found on
the tire placard on the driver’s door
B-pillar, not in the owner’s manual.
Page 332 of 409

331 Practical hints
What to do if ...
Left display
Right display
Possible cause/
consequence
Possible solution
.
High beam
Left
The left high beam lamp is mal-
functioning.
Visit an authorized Mercedes-Benz Center as soon as
possible.
High beam
Right
The right high beam lamp is
malfunctioning.
Visit an authorized Mercedes-Benz Center as soon as
possible.
Left turn signal
Mirror
The left turn signal in the side
mirror is malfunctioning. This
message will only appear if all
light emitting diodes have
stopped working.
Have the LEDs replaced as soon as possible.
License plate
lamp, L
The left license plate lamp is
malfunctioning.
Visit an authorized Mercedes-Benz Center as soon as
possible.
License plate
lamp, R
The right license plate lamp is
malfunctioning.
Visit an authorized Mercedes-Benz Center as soon as
possible.
Light sensor
Drive to
workshop
The light sensor is malfunction-
ing. The headlamps switch on
automatically.
In the control system, set lamp operation to manual
(page 132).
Switch on headlamps using the exterior lamp switch.
Visit an authorized Mercedes-Benz Center immediately.
Low beam
Left
The left low beam lamp is mal-
functioning.
Visit an authorized Mercedes-Benz Center as soon as
possible.
Page 334 of 409

333 Practical hints
What to do if ...
Left display
Right display
Possible cause/
consequence
Possible solution
.
Right turn signal
Mirror
The right turn signal in the side
mirror is malfunctioning. This
message will only appear if all
light emitting diodes have
stopped working.
Have the LEDs replaced as soon as possible.
Tail lamp
Left
Substitute
bulb on
The left tail lamp is malfunc-
tioning. This message will only
appear if a critical number of
LEDs have blown.
Visit an authorized Mercedes-Benz Center as soon as
possible.
Tail lamp
Right
Substitute
bulb on
The right tail lamp is malfunc-
tioning. This message will only
appear if a critical number of
LEDs have blown.
Visit an authorized Mercedes-Benz Center as soon as
possible.
Turn off
lamps
You have removed the Smart-
Key from the starter switch and
opened the driver’s door.
Turn the exterior lamp switch toM.
Turn signal
Front left
T h e l e f t f r o n t t u r n s i g n a l l a m p i s
malfunctioning.
Visit an authorized Mercedes-Benz Center as soon as
possible.
Turn signal
Front right
The right front turn signal lamp
is malfunctioning.
Visit an authorized Mercedes-Benz Center as soon as
possible.
Page 335 of 409
334 Practical hintsWhat to do if ...Left display
Right display
Possible cause/
consequence
Possible solution
.
Turn signal
Rear left
Substitute
bulb on
The left rear turn signal lamp is
malfunctioning. A backup bulb
has been brought into use.
Visit an authorized Mercedes-Benz Center as soon as
possible.
Turn signal
Rear right
Substitute
bulb on
The right rear turn signal lamp
is malfunctioning. A backup
bulb has been brought into use.
Visit an authorized Mercedes-Benz Center as soon as
possible.
Visit
workshop
The display for the lights is mal-
functioning.
Visit an authorized Mercedes-Benz Center as soon as
possible.
<
Seat belt system
Drive to
workshop
The seat belt system is mal-
functioning.
Visit an authorized Mercedes-Benz Center immediately.
L
Tele Aid
Drive to
workshop
One or more main functions of
the Tele Aid system are mal-
functioning.
Have the Tele Aid system checked by an authorized
Mercedes-Benz Center immediately.
Page 349 of 409

348 Practical hintsReplacing bulbsSafe vehicle operation depends on proper
exterior lighting and signaling. It is there-
fore essential that all bulbs and lamp as-
semblies are in good working order at all
times.
Correct headlamp adjustment is extremely
important. Have headlamps checked and
readjusted at regular intervals and when a
bulb has been replaced. See an authorized
Mercedes-Benz Center for headlamp ad-
justment.
!You must not change the bulbs or LEDs
yourself, as you could damage the vehi-
cle lighting systems.
Have blown bulbs or LEDs replaced by
an authorized Mercedes-Benz Center.iIf the headlamps are fogged up on the
inside as a result of high humidity, driv-
ing the vehicle a distance should clear
up the fogging.
iSubstitute bulbs will be brought into
use when lamps malfunction. Observe
the messages in the multifunction dis-
play (
page 330).
iIf one of the following bulbs blows, an-
other bulb will adopt its function:
Rear turn signals
Brake lamps
Side lamps
Tail lamps
Page 354 of 409

353 Practical hints
Flat tire
7Tire valve
8Electric air pump switch
9Air hose with pressure gauge and vent
screw
aFiller hose
Unscrew the valve cap from tire
valve7.
Screw filler hosea onto tire valve7.
Insert electrical plug4 into vehicle
cigarette lighter socket.
Turn the SmartKey in the starter switch
to position1 (
page 40).
PressI on electric air pump switch8.
The electric air pump should now
switch on and inflate the tire.After 5 minutes, the pressure gauge must
display at least 26 psi (1.8 bar). The air
hose can become hot during inflation.
Please exercise appropriate caution.
If this tire inflation pressure is not at-
tained, turn off the electric air pump,
detach the filler hose from the tire
valve, and drive vehicle back and forth
very slowly approximately 30 ft (10 m).
This serves to better distribute the
TIREFIT sealant material inside the tire.
Unscrew the air pump’s air hose5
from flange6 of the TIREFIT
container.
Screw air hose5onto tire valve7.
Inflate the tire again.
Warning!
G
Observe safety instructions on air pump
label.
!Do not operate the electric air pump
longer than 8 minutes without interrup-
tion. Otherwise it may overheat.
You may operate the air pump again af-
ter it has cooled off.
Page 373 of 409
372 Technical dataRims and tiresMixed size tires
Turbine-style
10-spoke-style*
5-spoke-style*
Front axle:Rims (light alloy)
9J x 19
9J x 18
9J x 18
Wheel offset
1.83 in (46.5 mm)
1.77 in (45 mm)
1.77 in (45 mm)
Summer tires (radial-ply tires)
255/35 ZR19 (96Y) XL
1
245/40 ZR18 (93Y)
245/40 ZR18 (93Y)
Rear axle:Rims (light alloy)
11
1/2 J x 19
11
1/2 J x 18
11
1/2 J x 18
Wheel offset
1.77 in (45 mm)
1.73 in (44 mm)
1.73 in (44 mm)
Summer tires (radial-ply tires)
295/30 ZR19 (100Y) XL
1
295/35 ZR18 (99Y)
1
1Must not be used with snow chains.
295/35 ZR18 (99Y)
1
!Only use Michelin tires of the sizes and
types noted above. They are the only
tires approved for use on the SLR. Use
of tires not specially approved for the
SLR could result in unanticipated per-
formance characteristics. For more in-
formation, contact an authorized
Mercedes-Benz Center.