2006 MERCEDES-BENZ SLK280 Owner's Manual

416 Practical hintsFlat 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
mounting the spare wheel with
collapsible tire. The use of any wheel
bolts other than wheel bolts2 for the
spare wheel with collapsible tire will
physically damage the vehicle’s
brakes. !To avoid paint damage, place wheel flat
against hub and hold it there while in-
stalling first wheel bolt.
Warning!
G
Always replace wheel bolts that are dam-
aged or rusted.
Never apply oil or grease to wheel bolts.
Damaged wheel hub threads should be re-
paired immediately. Do not continue to drive
under these circumstances! Contact an au-
thorized 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.

417 Practical hints
Flat tire

Unscrew the alignment bolt, install last
wheel bolt and tighten slightly.

Inflate the collapsible tire
(page 417).Inflating the collapsible tire
1Flap
2Air pump switch
3Electrical plug
4Air hose with pressure gauge and vent
screw
5Union nut
Warning!
G
Use only genuine equipment
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
Inflate collapsible tire only after the wheel is
properly mounted.
Inflate the collapsible tire using the electric
pump (
page 388) before
lowering the ve-
hicle.
Warning!
G
Observe instructions on air pump label.!Do not lower the vehicle before inflat-
ing the collapsible tire. Otherwise the
rim may be damaged.

418 Practical hintsFlat tire
Take the electric air pump out of the
trunk (
page 388).

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 air hose4 with union nut5
onto the collapsible tire valve.

Make sure electric air pump switch2
is set to0.

Insert electrical plug3 into the power
outlet in the passenger footwell
(page 271).

Turn the SmartKey in the starter switch
to position1.

PressI on electric air pump switch2.
The electric air pump switches on and
inflates the collapsible tire.

Inflate the collapsible tire to approxi-
mately 51 psi (3.5 bar).
This takes about 5 minutes for the col-
lapsible tire. Air hose4 and union
nut5 can become hot during infla-
tion. Exercise proper caution to avoid
burning yourself when using the equip-
ment.

Press0 on electric air pump switch2.

Turn the SmartKey in the starter switch
to position0.
The electric air pump should now be
switched off.

If the tire inflation pressure is above
51 psi (3.5 bar), release excess tire in-
flation pressure using the vent screw
on air hose4.
!The cigarette lighter (
page 270) is
not designed for use with the electric
air pump. Use the power outlet in the
passenger footwell (
page 271) for
electric air pump operation.
!Do not operate the electric air pump
longer than 6 minutes without interrup-
tion. Otherwise it may overheat.
You may operate the electric air pump
again after it has cooled off.

419 Practical hints
Flat tire

Detach the electric air pump.

Reinstall collapsible tire valve cap.

Store electrical plug3 and air
hose4 behind flap 1 and place the
electric air pump back in the trunk.

Lower the vehicle (
page 419).Lowering the vehicle

Lower vehicle by turning the crank
counterclockwise until vehicle is rest-
ing fully on its own weight.

Remove the jack.
1-5 Wheel bolts

Tighten the five wheel bolts evenly in
the direction of the arrow, following the
diagonal sequence illustrated
(1to5), until all bolts are tight.
Observe a tightening torque of
80 lb-ft (110 Nm).
Warning!
G
Follow recommended tire inflation
pressures.
Do not underinflate tires. Underinflated tires
wear excessively and / or unevenly,
adversely affect handling and fuel economy,
and are more likely to fail from being over-
heated.
Do not overinflate tires. Overinflated tires
can adversely affect handling and ride
comfort, wear unevenly, increase stopping
distance, and result in sudden deflation
(blowout) because they are more likely to
become punctured or damaged by road
debris, potholes etc.
Warning!
G
Inflate the collapsible tire using the electric
pump (
page 417) before
lowering the ve-
hicle.


420 Practical hintsFlat tire

Fully collapse the jack.

Place the vehicle tool kit, electric air
pump, and the jack back in the storage
compartment underneath the trunk
floor.

Wrap the damaged wheel in the protec-
tive sheet provided with the spare
wheel and put the wheel in the trunk.
Warning!
G
Have the tightening torque checked after
changing a wheel. The wheels could come
loose if they are not tightened to a torque of
80 lb-ft (110 Nm).
iThe flat tire may be transported in the
trunk when the retractable hardtop is
closed.


421 Practical hints
Battery
Battery
The battery is located in the engine com-
partment on the right-hand side below the
windshield washer fluid reservoir.
1Battery
2Positive terminal
3Negative terminal
Warning!
G
Failure to follow these instructions can re-
sult in severe injury or death.
Observe all safety instructions and precau-
tions when handling automotive batteries,
see “Battery” (
page 314).
Never lean over batteries while connecting
them, as you could otherwise be injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come into contact with
eyes, skin or clothing. In case it does, imme-
diately flush affected area with water and
seek medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking, etc.
Warning!
G
Do not place metal objects on the battery as
this could result in a short circuit.
Use leak-proof batteries only to avoid the
risk of acid burns in the event of an acci-
dent.!Never loosen or detach battery termi-
nal clamps while the engine is running
or the SmartKey is in the starter switch.
Otherwise the alternator and other
electronic components could be se-
verely damaged.
Have the battery checked regularly by
an authorized Mercedes-Benz Center.
Refer to Maintenance Booklet for main-
tenance intervals or contact an autho-
rized Mercedes-Benz Center for further
information.

422 Practical hintsBatteryDisconnecting the battery
1Water tray
2Lock

Pull up parking brake lever firmly and
m o v e g e a r s e l e c t o r l e v e r * t o p o s i t i o nP
(manual transmission to Neutral).

Switch off all electrical consumers.

Remove SmartKey from starter switch.

Open the hood (
page 307).

Turn locks2 one quarter turn.

Remove water tray1.

Read and observe safety instructions
and precautions (
page 421).

Use a 10 mm open-end wrench to dis-
connect the negative lead from battery
negative terminal3 (
page 421).

Remove the cover from the positive
terminal.

Use a 10 mm open-end wrench to dis-
connect the positive lead from battery
positive terminal2 (
page 421).
Removing the battery
Remove the screw on the swivel bar.

Remove the swivel bar.

Pull out the battery ventilation tube
from the battery (depending on battery
arrangement in your vehicle model, the
ventilation tube is located either on the
left or right side of the battery).

Take out the battery.
Warning!
G
With a disconnected battery

you will no longer be able to turn the
SmartKey in the starter switch


automatic transmission*: the gear se-
lector lever will remain locked in
positionP

423 Practical hints
Battery
Charging and reinstalling battery

Charge battery in accordance with the
instructions of the battery charger
manufacturer.

Reinstall the charged battery. Follow
the previously described steps in re-
verse order.
Reconnecting the battery
Turn off all electrical consumers.

Connect the positive lead and fasten its
cover.

Connect the negative lead.

Reinstall the water tray.Batteries contain materials that can harm
the environment if disposed of improperly.
Large 12-volt storage batteries contain
lead. Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.
Warning!
G
Never charge a battery while still installed in
the vehicle unless the accessory battery
charge unit approved by Mercedes-Benz is
being used. Gases may escape during charg-
ing and cause explosions that may result in
paint damage, corrosion or personal injury.
An accessory battery charge unit specially
adapted for Mercedes-Benz vehicles and
tested and approved by Mercedes-Benz is
available, permitting the charging of the bat-
tery in its installed position. Contact an
authorized Mercedes-Benz Center for infor-
mation and availability. Charge battery in
accordance with the separate instructions
for the accessory battery charger.
!The battery, its filler caps and the vent
tube must always be securely installed
when the vehicle is in operation.!Never invert the terminal connections!
iThe following procedures must be car-
ried out following any interruption of
battery power (e.g. due to reconnec-
tion):

Set the clock (
page 139).


Synchronize the power windows
(page 251).