Servotronic, Servotronic pro – BMW M3 Sedan 2009 User Manual

Page 83

Reduce your speed and carefully stop the
car. Avoid sudden braking and steering
maneuvers.

If all four wheels are shown in yellow, iden-
tify the damaged wheel on the vehicle.

Repair the flat tire with the M Mobility Sys-
tem, refer to page

206

Have the tire replaced by a BMW center or a
workshop that is informed in the handling of
TPM and that works according to BMW repair
procedures with correspondingly trained per-
sonnel.

Malfunction

The small warning lamp flashes in
yellow and then lights up continu-
ously; the larger warning lamp comes
on in yellow. On the Control Display,

the wheels are shown in gray and a message
appears. No punctures can be detected.
This type of message is shown in the following
situations:

If there is a malfunction
Have the system checked.

If a wheel without TPM electronics has
been mounted

If TPM is temporarily malfunctioning due to
other systems or devices using the same
radio frequency.

Message for unsuccessful system
reset

The warning lamp lights up yellow. A
message appears on the Control Dis-
play. The system is not reset after a

tire has been changed, for example.
Check the tire inflation pressure and reset the
system, refer to page

Declaration according to NHTSA/
FMVSS 138

Tire Pressure Monitoring Systems

Each tire should be checked monthly when cold
and inflated to the inflation pressure recom-
mended by the vehicle manufacturer on the
vehicle placard or tire inflation pressure label. If

your vehicle has tires of a different size than the
size indicated on the vehicle placard or tire infla-
tion 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 monitoring sys-
tem, TPMS, that illuminates a low tire pressure
telltale when one or more of your tires are signif-
icantly under-inflated. Accordingly, when the
low tire pressure telltale illuminates, you should
stop and check your tires as soon as possible,
and inflate them to the proper pressure. Driving
on a significantly underinflated tire causes the
tire to overheat and can lead to tire failure.
Underinflation also reduces fuel efficiency and
tire tread life, and may affect the vehicle’s han-
dling and stopping ability. Please note that the
TPMS is not a substitute for proper tire mainte-
nance, and it is the driver’s responsibility to
maintain correct tire pressure, even if underin-
flation has not reached the level at which the
TPMS low tire pressure telltale illuminates.
The TPMS malfunction indicator is combined
with the low tire pressure telltale. When the sys-
tem detects a malfunction, the telltale will flash
for approximately one minute and then remain
continuously lit. This sequence will continue
upon subsequent vehicle startups 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.

Servotronic

The concept

"Servotronic" varies the steering force required
to turn the wheels as a function of the speed at
which you are driving.

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