Page 394 of 473

393 Practical hints
Replacing bulbs
Replacing bulbs
Bulbs
Safe vehicle operation depends on proper
exterior lighting and signaling. It is there-
fore essential that all bulbs and lamp
assemblies 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. Contact an
authorized Mercedes-Benz Center for
headlamp adjustment.
Warning!G
Bulbs and bulb sockets can be very hot. Al-
low the lamp to cool down before changing
a bulb.
Keep bulbs out of reach of children.
Halogen lamps contain pressurized gas.
A bulb can explode if you:
touch or move it when hot
drop the bulb
scratch the bulb
Wear eye and hand protection.
Because of high voltage in Xenon lamps, it is
dangerous to replace the bulb or repair the
lamp and its components. We recommend
that you have such work done by a qualified
technician.
iIf the headlamps are fogged up on the inside
as a result of high humidity, driving the vehicle a
short distance with the lights on should clear up
the fogging.
iBackup bulbs will be brought into use
when lamps malfunction. Read and observe
the messages in the multifunction
display (
page 375).
Page 396 of 473

395 Practical hints
Replacing bulbs
Rear lamps Notes on bulb replacement
Only use 12-volt bulbs of the same type
and with the specified watt rating.
Switch the lights off before replacing a
bulb to prevent short circuits.
Always use a clean lint-free cloth when
handling bulbs.
Your hands should be dry and free of oil
and grease.
If the newly installed bulb does not
come on, contact an authorized
Mercedes-Benz Center.Have the LEDs and bulbs for the following
lamps replaced by an authorized
Mercedes-Benz Center:
Additional turn signal lamps in the
exterior rear view mirrors
Bi-Xenon* lamps
Front fog lamps
High mounted brake lamp
Brake lamps
Front and rear side marker lamps
Parking/standing lamps in the tail
lamp assemblies
LampType
8Rear fog lamp (driver’s
side only)P21W
9High mounted brake
lampLED
aTail, parking, standing,
side marker lamp and
brake lampLED
bLicense plate lampsC5W
cBackup lampP21W
dTurn signal lampPY 21 W
!Do not replace the LEDs yourself. You could
otherwise damage the LEDs or parts of the
vehicle. Only have the LEDs replaced by an
authorized Mercedes-Benz Center.
Page 397 of 473
396 Practical hints
Replacing bulbs
Replacing bulbs for front lamps
Before you start to replace a bulb for a
front lamp, do the following first:
Turn the exterior lamp switch to
positionM (
page 109).
Open the hood (page 294).
1Housing cover for low beam (halogen
headlamps only)
Housing cover for Bi-Xenon* head-
lamps. Do not remove.
2Bulb socket for turn signal lamp
3Bulb socket for high beam/high beam
flasher lamp
4Bulb socket for parking and standing
light lamp
5Bulb socket for low beam bulb
(Halogen headlamps only)
Warning!G
Do not remove the cover1 for the
Bi-Xenon* headlamp. Because of high volt-
age in Bi-Xenon lamps, it is dangerous to
replace the bulb or repair the lamp and its
components. We recommend that you have
such work done by a qualified technician.
Page 405 of 473

404 Practical hints
Flat tire
Version 1
aVent screw
bPressure gauge
Close vent screwa on pressure
gaugeb (version 1 only).
Screw filler hose8 onto tire valve9
(
page 403).
Insert electrical plug4 (page 403)
into the cigarette lighter (
page 256).
Turn the SmartKey in the starter switch
to position1 (
page 37).
PressI on electric air pump switch3
(
page 403).
The electric air pump is switched on
and inflates the tire.
Let the electric air pump inflate the tire
for approximately 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 the tire inflation pressure of at least
26 psi (1.8 bar) is not attained, turn off
the electric air pump by pressing0 on
electric air pump switch3
(
page 403).
Detach filler hose8 f r o m t i r e v a l v e9
(
page 403).
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 TIREFIT container1
(
page 403).
Screw air hose5onto tire valve9.
Inflate the tire again.
iFirst, the sealing is pumped into the tire. The
pressure may briefly rise to up to 73 psi (5 bar).
This is normal and not an indication of a malfunc-
tion. Do not switch off the electric air pump.
!Do not operate the electric air pump longer
than 6 minutes without interruption. Otherwise it
may overheat.
You may operate the air pump again after it has
cooled off.
Page 410 of 473

409 Practical hints
Flat tire
Jack up the vehicle until the wheel is a
maximum of 1.2 in (3 cm) from the
ground.Removing the wheel
4Alignment bolt
Unscrew the upper-most wheel bolt
and remove.
Replace this wheel bolt with alignment
bolt4 supplied in the vehicle tool
kit (
page 382).
Remove the remaining bolts.
Remove the wheel.Mounting the spare wheel
1Wheel bolt for light alloy rims
2Wheel bolt for spare wheel with
collapsible tire (located under plastic
cover on the outside of spare wheel
rim)
Warning!G
The jack is intended only for lifting the
vehicle briefly for wheel changes. It is not
suited for performing maintenance work
under the vehicle.
Never start the engine when the vehicle
is raised.
Never lie down under the raised vehicle.
!Do not place wheel bolts in sand or dirt. This
could result in damage to the bolt and wheel hub
threads.
Warning!G
Inflate collapsible tire only after the wheel is
properly mounted.
Inflate the collapsible tire using the electric
pump (
page 411) before lowering the
vehicle.
Page 411 of 473
410 Practical hints
Flat tire
Clean contact surfaces of wheel and
wheel hub.
Guide the spare wheel onto the align-
ment bolt and push it on.
Insert the wheel bolts and tighten them
slightly.
!Wheel bolts2 must be used when mount-
ing the spare wheel with collapsible tire. The use
of any wheel bolts other than wheel bolts2 for
the spare wheel with collapsible tire will physi-
cally damage the vehicle’s brakes.
!To avoid paint damage, place wheel flat
against hub and hold it there while installing first
wheel bolt.
Warning!G
Always replace wheel bolts that are
damaged or rusted.
Never apply oil or grease to wheel bolts.
Damaged wheel hub threads should be
repaired immediately. Do not continue to
drive under these circumstances! Contact
an authorized Mercedes-Benz Center or call
Roadside Assistance.
Incorrect wheel bolts or improperly tight-
ened wheel bolts can cause the wheel to
come off. This could cause an accident. Be
sure to use the correct wheel bolts.
Page 412 of 473

411 Practical hints
Flat tire
Unscrew the alignment bolt, install last
wheel bolt and tighten slightly.
Inflate the collapsible tire
(
page 411).Inflating the collapsible tire
1Flap
2Air pump switch
3Electrical plug
4Air hose with pressure gauge and vent
screw
5Union nut
Take the electric air pump out of the
trunk (
page 383).
Open flap1 on air pump.
Pull out electrical plug3 and air hose
with pressure gauge4.
Close vent screw on air hose4.
Remove the valve cap from the tire
valve.
Screw union nut5 onto the tire valve.
Make sure electric air pump switch2
is set to0.
Insert electrical plug3 into the power
outlet in the passenger footwell
(
page 257).
Turn the SmartKey in the starter switch
to position1.
Warning!G
Use only genuine Mercedes-Benz wheel
bolts. Other wheel bolts may come loose.
Do not tighten the wheel bolts when the
vehicle is raised. Otherwise the vehicle
could fall off the jack.Warning!G
Observe instructions on air pump label.
!Do not lower the vehicle before inflating the
collapsible tire. Otherwise the rim may be
damaged.
!The cigarette lighter (page 256) is not de-
signed for use with the electric air pump. Use the
power outlet in the passenger footwell
(
page 257) for electric air pump operation.
Page 436 of 473
435 Technical data
Rims and tires
Same size tires
ModelSLK 280SLK 280
SLK 280 (Appearance Package*)
SLK 350
SLK 350 (Appearance Package*)
Rims (light alloy)7Jx16H27.5 J x 17 H2
Wheel offset1.34 in (34 mm)1.42 in (36 mm)
Winter tires1,2
1Radial-ply tires2Not available as factory equipment.
205/55 R16 91H M+S.225/45 R17 91H M+S.
Rims (light alloy) –7.5 J x 17 H2
Wheel offset –1.42 in (36 mm)
Winter tires*1,2,3
3Must be used in conjunction with Run Flat Indicator* only.
–225/45 R17 91H M+S.MOExtended