Mercedes-Benz S-Class 2008 COMAND Manual User Manual

Page 596

595

Operation

Tires and wheels

Warning!

Each tire, including the spare (if provided),

should be checked monthly when cold and

inflated to the inflation pressure recom-

mended by the vehicle manufacturer on the

vehicle Tire and Loading Information placard

or the tire inflation pressure label. If your ve-

hicle has tires of a different size than the

size indicated on the vehicle Tire and Load-

ing Information placard or the tire inflation

pressure label, you should determine the

proper tire inflation pressure for those tires.

As an added safety feature, your vehicle has

been equipped with a tire pressure monitor-

ing system (TPMS) that illuminates a low tire

pressure telltale when one or more of your

tires is significantly underinflated. Accord-

ingly, when the low tire pressure telltale illu-

minates, you should stop and check your

tires as soon as possible, and inflate then to

the proper pressure. Driving on a significant-

ly underinflated tire causes the tire to over-

heat and can lead to tire failure.

Under-inflation also reduces fuel efficiency

and tire tread life, and may effect the vehi-

cle’s handling and stopping ability. Please

note that the TPMS is not a substitute for

proper tire maintenance, and it is the driv-

er’s responsibility to maintain correct tire

pressure, even if under-inflation has not

reached the level to trigger illumination of

the TPMS low tire pressure telltale.

USA only:

Your vehicle has also been equipped with a

TPMS malfunction indicator to indicate

when the system is not operating properly.

The TPMS malfunction indicator is com-

bined with the low tire pressure telltale.

When the system detects a malfunction, the

telltale will flash for approximately

one minute and then remain continuously il-

luminated. This sequence will continue upon

subsequent vehicle start-ups as long as the

malfunction exists. When the malfunction

indicator is illuminated, the system may not

be able to detect or signal low tire pressure

as intended.

TPMS malfunctions may occur for a variety

of reasons, including the installation of

replacement or alternate tires or wheels on

the vehicle that prevent the TPMS from

functioning properly. Always check the

TPMS malfunction telltale after replacing

one or more tires or wheels on your vehicle

to ensure that the replacement or alternate

tires and wheels allow the TPMS to continue

to function properly.

If a condition causing the TPMS to malfunc-

tion develops, it may take up to 10 minutes for
the system to signal a malfunction using the
TPMS telltale flashing and illumination se-
quence.

The telltale extinguishes after a few minutes driv-
ing if the malfunction has been corrected.

Operating radio transmission equipment

(e.g. wireless headsets, two-way radios) in or
near the vehicle could cause the TPMS to mal-
function.