Tire Pressure Monitoring (Tpm) - Chrysler 300M Service Manual

22 - 10 TIRES/WHEELS
TIRES/WHEELS (Continued)
Fig. 16 Tightening Sequence
TIRE PRESSURE MONITORING
(TPM)
DESCRIPTION
Some versions of this vehicle are equipped with a
Tire Pressure Monitoring (TPM) system. It monitors
air pressure in all five tires (includes full-size
spare).
There is a sensor (transmitter) in each of the vehi-
cle's five wheels. The system alerts the driver when
tire pressure falls outside predetermined thresholds
(pressure too low or too high). A message is then dis-
played on the Electronic Vehicle Information Center
(EVIC) located in the overhead console. Tire air pres-
sures in the four road wheels are displayed on the
EVIC when chosen. Pressure in the spare tire,
although monitored, is not displayed on the EVIC.
For further information, refer to the Owners Man-
ual or the appropriate diagnostic information.
OPERATION
The Tire Pressure Monitoring (TPM) system uses
wireless technology to monitor tire air pressure lev-
els. Sensors, mounted to each road wheel as part of
the valve stem, transmit tire pressure readings to a
receiver located in the overhead console. These trans-
missions occur once every minute at speeds over 20
mph (32 km/h). The tire pressure status is shown on
the Electronic Vehicle Information Center (EVIC) dis-
play upon demand. The Tire Pressure Monitoring
system remains active even if it is not displayed in
the EVIC.
If any road tire pressure has exceeded the low or
high pressure threshold (refer to chart below), the
TPM system will display a message on the EVIC and
sound a chime. It will then go into the tire pressure
display screen and flash the pressure value of the
tire that is low or high. This will be displayed for the
rest of the ignition cycle, or until either the C/T,
MENU, STEP or RESET button is pressed.
If a road tire is replaced by the spare, the TPM
system will detect the swap automatically (after the
ignition has been cycled) and display SPARE SWAP
DETECTED along with a chime (This could take up
to 10 minutes with the vehicle speed above 20 mph
(32 km/h).
For further information, refer to the Owners Man-
ual or the Appropriate Diagnostic Information.
NOTE: TPM thresholds have been established for
the original tire size equipped on the vehicle.
TPM THRESHOLD PRESSURES
DESCRIPTION
High Pressure Threshold
Placard Pressure (Cold)
Low Pressure Threshold
WARNING
WARNING: DO NOT USE THE EVIC DISPLAY TO
MONITOR AIR PRESSURE
ADJUSTING AIR PRESSURE IN THE TIRES. THE
TPM SYSTEM CANNOT BE EXPECTED TO FUNC-
TION AS A REAL TIME TIRE PRESSURE GAUGE.
THERE CAN BE A DELAY BETWEEN THE INSTANT
THE AIR PRESSURE IS ADJUSTED IN A TIRE AND
WHEN THE SYSTEM UPDATES THE DISPLAY.
CAUTION
CAUTION: TPM thresholds have been established
for the original tire size equipped on the vehicle.
Use original size tires only to maintain system
accuracy.
CAUTION: The use of tire sealants is strictly prohib-
ited for vehicles equipped with the Tire Pressure
Monitoring system. Tire sealants can clog tire pres-
sure sensors.
LH
300M
300M
SPECIAL
45 PSI 45 PSI
(310 kPa) (310 kPa)
30 PSI 32 PSI
(207 kPa) (221 kPa)
24 PSI 26 PSI
(165 kPa) (179 kPa)
CHANGES WHILE