Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 2108

2. Insert sensor (1) through wheel (2) as shown keep-

ing pressure against rear of metal valve stem (See
Arrow). Potted side of sensor is to be positioned
toward wheel. Do not attempt to mount sensor oth-
erwise, damage may occur.

3. Install sensor nut (with pressed-in washer) (3) by

hand.

NOTE: Before tightening sensor nut, push down-
ward on sensor housing (2) in an attempt to make
it flush with interior contour of wheel (1).

4. While holding sensor in position, tighten sensor nut

to 6.5 N·m (58 in. lbs.) torque.

CAUTION: Over-torquing the sensor nut by as little
as 12 N·m (106 in. lbs.) may result in sensor sep-
aration from the valve stem. Under this condition,
the sensor may still function. However, the condi-
tion should be corrected immediately.

5. Mount tire on wheel following tire changer manufacturers instructions, paying special attention to the following to

avoid damaging tire pressure sensor:

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TIRES/WHEELS

LX

a.

Rotating Wheel Tire Changers - Once the
wheel is mounted to the changer, position the
sensor valve stem (2) approximately 210° from
the head of the changer (located at 1) in a
clockwise direction before rotating the wheel
(also in a clockwise direction) to mount the tire.
Use this procedure on both the upper and
lower tire beads.

b. Rotating Tool Tire Changers - Position the

wheel on the changer so that the sensor valve
stem (1) is located approximately 210° clock-
wise from the installation end of the mounting/
dismounting tool (2) once the tool is mounted
for tire installation. Make sure the sensor is
clear of the lower bead breaker area (3) to
avoid damaging the sensor when the breaker
rises. Rotate the tool (2) in a counterclockwise
direction to mount the tire. Use this procedure
on both the upper and lower tire beads.

LX

TIRES/WHEELS

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6. Adjust air pressure to that listed on Tire Inflation

Pressure Label (Placard) provided with vehicle
(usually applied to driver’s side B-pillar). Make sure
original style valve stem cap is securely installed
to keep moisture out of sensor.

7. Install tire and wheel assembly (1) on vehicle

(Refer to 22 - TIRES/WHEELS - INSTALLATION).
Tighten wheel mounting nuts (3) to 150 N·m (110
ft. lbs.) torque.

8. Lower vehicle.

9. Drive vehicle for a minimum of 10 minutes while

maintaining a continuous speed above 15 mph (24
km/h). During this time the system will learn the
new sensor ID code and will clear any DTC’s auto-
matically.

NOTE: If a sensor cannot be trained, refer to
appropriate diagnostic information.

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TIRES/WHEELS

LX

TRANSPONDER - TPM

DESCRIPTION

Vehicles equipped with the premium TPM system use transponders, sometimes referred to as trigger modules, to
provide the Wireless Control Module (WCM), commonly referred to as the Sentry Key Remote Entry Module
(SKREEM), with the location of the tire pressure sensors on the vehicle. A transponder is located in three of the four
wheel wells on the vehicle The transponders are located in the left front, right front and right rear wheel wells behind
the wheelhouse splash shields. Only three transponders are necessary to locate the four rotating sensors because
the WCM can determine the location of the fourth by using the process-of-elimination theory. Once the system
knows the location of the first three sensors, it assumes the location of the fourth tire pressure sensor is in the left
rear tire.

OPERATION

On vehicles equipped with the premium TPM system, the Wireless Control Module (WCM), commonly referred to as
the Sentry Key Remote Entry Module (SKREEM), uses transponders (trigger modules) located in three of the four
wheel wells on the vehicle to provide it with the location of the tire pressure sensors on the vehicle. Like the base
system, the WCM receives RF signals from all four rotating wheel speed sensors. When the WCM needs to know
which sensor is located at a particular location on the vehicle, it directs the transponder at that location to send out
a low frequency signal to excite the nearby sensor. The WCM then receives that excited signal and knows where
that sensor is located. This auto-locating process only happens in the first 10 minutes of any WCM cycle while
traveling at speeds above 20 mph (32 km/h) (Each WCM cycle ends when the vehicle has been shut off for a time
period of approximately 15 minutes or longer). Once the WCM has performed this to the three locations that have
transponders (left front, right front and right rear wheel wells), it uses the process-of-elimination theory to know that
the fourth sensor ID signal is coming from the left rear tire sensor.

REMOVAL

FRONT

1. Remove wheelhouse splash shield at transponder requiring service. (Refer to 23 - BODY/EXTERIOR/F WHEEL-

HOUSE SPLASH SHIELD - REMOVAL)

2. Disconnect wiring harness connector (1) at tran-

sponder (2).

3. Remove mounting screws (3), then remove tran-

sponder (2) from front fascia (4).

REAR

1. Remove wheelhouse splash shield at transponder requiring service. (Refer to 23 - BODY/EXTERIOR/REAR

WHEELHOUSE SPLASH SHIELD - REMOVAL)

LX

TIRES/WHEELS

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