Mercedes-Benz 2008 SL 55 AMG, Operator'S Manual

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303
Operation
Tires and wheels
왘
Install the valve cap.
왘
Repeat this procedure for each tire.
Run Flat Indicator (Canada only)
While the vehicle is being driven, the Run
Flat Indicator monitors the set tire inflation
pressures by evaluating each wheel’s rota-
tional speed. This allows the system to de-
tect a significant loss of pressure in a tire.
If a wheel’s rotational speed changes due
to falling tire inflation pressure, you will
see a corresponding warning message in
the multifunction display.
The Run Flat Indicator may function in a re-
stricted manner or with a delay
앫
if snow chains are mounted to the
vehicle
앫
in presence of ice and snow
앫
if you are driving on a loose surface
(e.g. sand or gravel)
앫
if you are driving in a very sporty man-
ner (involving rapid acceleration or high
speeds in curves)
i
If you have overfilled the tire, release tire in-
flation pressure by pushing the metal stem of the
valve with e.g. a tip of a pen. Then recheck the
tire inflation pressure with the tire gauge.
Warning!
G
When the multifunction display shows the
message Tire Pressure Check Tires ,
one or more of your tires is significantly un-
derinflated. You should stop and check your
tires as soon as possible, and inflate them to
the proper tire inflation pressure as indicat-
ed on the vehicle’s Tire and Loading
Information placard or, if available, on the
tire inflation pressure label. Driving on a sig-
nificantly under-inflated tire causes the tire
to overheat and can lead to tire failure. Un-
derinflation also reduces fuel efficiency and
tire tread life, and may affect the vehicle’s
handling and stopping ability. Each tire, in-
cluding the spare, should be checked
monthly when cold and set to the recom-
mended tire inflation pressure as specified
on the Tire and Loading Information placard
on the driver’s door B-pillar (
컄
page 295) or,
if available, on the tire inflation pressure la-
bel located on the inside of the fuel filler flap
(
컄
page 279).