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Practical hints
Flat tire
̈ Turn the SmartKey in the starter switch
to position 1.
or
̈ Press the KEYLESS-GO* start/stop
button on the gear selector lever once
without depressing the brake pedal.
̈ Press I on the electric air pump
switch 2.
The electric air pump should now
switch on and inflate the tire.
̈ Inflate the spare tire:
ț SL 550 to 36 psi (2.5 bar)
ț SL 600, SL 55 AMG, SL 55 AMG
(Performance Package*), and
SL 65 AMG to 51 psi (3.5 bar)
This takes about 5 minutes.
Air hose 4 and union nut 5 can be-
come hot during inflation. Exercise
proper caution to avoid burning your-
self when using the equipment.
̈ Press 0 on the electric air pump
switch 2.
̈ Turn the SmartKey in the starter switch
to position 0.
or
̈ Press KEYLESS-GO* start/stop button
on the gear selector lever twice without
depressing the brake pedal.
The electric air pump should now be
switched off.
̈ If the spare tire inflation pressure is
above the recommended tire inflation
pressure for the respective collapsible
tire (
୴ page 440), release excess spare
tire inflation pressure using the vent
screw.
̈ Detach the electric air pump.
̈ Stow the electrical plug and the air
hose behind the flap and place the air
pump back in the trunk.
!
Compare the recommended tire inflation
pressure for your vehicle with the tire inflation
pressure on the yellow label located on the spare
wheel rim.
If the tire inflation pressure on the yellow label
on the spare wheel rim differs from the values
given in this Operator’s Manual, inflate the tire to
the recommended tire inflation pressure given
on the yellow label on the spare wheel rim.
!
Do not operate the electric air pump longer
than 8 minutes without interruption. Otherwise it
may overheat.
You may operate the air pump again after it has
cooled off.
Warning! G
Follow recommend inflation pressures.
Do not overinflate tires. Overinflating tires
can result in sudden deflation (blowout) be-
cause they are more likely to become punc-
tured or damaged by road debris, potholes,
etc.
Do not underinflate tires. Underinflated tires
wear unevenly, adversely affect handling
and fuel economy, and are more likely to fail
from being overheated.
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