Kia Optima: Tire Pressure Monitoring System / TPMS Sensor

Function

Structure and features

Wheel angular velocity of wheels are different from each other in the following cases:

Slip for each axis occurs differently.

Rotation radius (the radius of curve) for each wheel is different.

Tire wear, internal pressure, tire specifications, etc. for each tire are different.

TPMS sensor is transmitted to RF signal at only specific phase (the angle of the tire) in the learning mode.

TPMS receiver checks each tire phase (tire angle) information on receiving RF signals from the sensor.

Every time RF signals from sensor IDs 1, 2, 3, and 4 are received, the ID with the highest correlation among the phase of each collected wheel is transmitted. (In other words, each time RF signal is received, the phase of the tire is transmitted to the most constant wheel.)

TPMS sensor transmits the RF signal at intervals of 16 seconds in the learning mode.

After stopping or parking for more than 19 minutes, automatic learning function in every driving position is performed.

The sensor is converted to Parking Mode when stopped or parked for more than 15 minutes. When acceleration of over 4g (15-20km/h) is detected in Parking Mode, it is converted to First Block Mode.

Remove the wheel and tire.

(Refer to Suspension System - "Wheel")

Remove the screw with torx driver (A).

• When installing the bead brake, make sure that it does not come in contact with the TPMS sensor. • Be careful not to damage the TPMS sensor when installing the bead brake near the TPMS sensor.

Remove the sensor housing (A) from the valve in the direction of the arrow.

Use the valve mounting tool to pull out the valve until it is entirely out of the lower hole.

Cut the rubber(A) at the bottom of valve with a knife.

Apply lubricant to the surface of the new valve, and then mount it through the valve hole of the wheel.

• After applying the lubricant, it should not be longer than 5 minutes until the valve is mounted. • "(If the lubricant is applied for more than 5 minutesApply lubricant again)"

Apply soapy water or lubricant to the upper/lower bead section of the tire.

To fit the bottom bead, position the sensor at the 5 o’clock position relative to the head on the tire changing machine

Rotate the rim clockwise, and push down on the tire at the 3 o’clock position to fit bottom bead.

Place the tire on the rim so the bottom bead touches the edge of the rim after the sensor (6 o’clock).

After bottom bead is on tire, rotate the rim until the sensor is at the 5 o’clock position relative to the head on the tire changing machine. Push down on the tire at the 3 o’clock position and rotate the rim clockwise to fit the top bead.

Inflate the tire until both beads seat.

Adjust the tire pressure according to the recommended tire pressure for the vehicle.

If the TPMS sensor malfunctions, you must perform TPMS sensor learning. Replace any faulty sensors and perform TPMS sensor learning.

Connect self-diagnosis connector(16pins) located in the lower of driver side crash pad to self-diagnosis device, and then turn the self-diagnosis device after key is ON.

Select the "vehicle model" and "TPMS" on KDS vehicle selection screen, then select OK.

[TPMS Variant Coding]

[TPMS TEST]

• Each entry must be checked for normal operation of each sensor. • After replacing the tires or sensors, check for proper operation of sensor after variant coding.