Hyundai Sonata LF: Tire Pressure Monitoring System / TPMS Receiver Description and Operation

Hyundai Sonata LF 2014-2019 Service Manual / Suspension System / Tire Pressure Monitoring System / TPMS Receiver Description and Operation

Description

Mode

(1)

Virgin State

A.	The receiver as a sole part is shipped in this state. Replacement parts should therefore arrive in this state.

B.	In this state, there is no Auto-Location, no sensor wake-up, no sensor monitoring and no DTC monitoring..

C.	The state indicates that platform specific parameters must be written to the receiver and that sensors are un-learned.

(2)

Normal State

A.	In order for tire inflation state and DTC monitoring to occur, the receiver must be in this state.

B.	In this state, automatic sensor location / learning is enabled.

Overview

A.	Learn TPMS sensor for under inflation monitoring automatically.

B.	Uses sensor information, distance travelled, background noise levels, Auto-learn status, short / open circuit output status, vehicle battery level, internal receiver states to determine if there is a system or a vehicle fault.

Operation

General Function

A.	Auto-learn takes place only once per Ignition cycle.

B.	On successful completion, 4 road wheel sensor ID's are latched into memory for monitoring.

C.	Until Auto-learn completes, previously learned sensors are monitored for under inflation / leak warnings.

General Conditions to Learn New Sensors:

A.	Receiver must determine that it is confident that sensor is not temporary: a. Uses vehicle speed. b. Uses confidence reduction of previously learned sensors.

B.	Typical time at driving continuously over 15.5 mph(25 kph) to learn a new sensor is up to 20 minutes.

General Conditions to Un-Learn a sensor that is removed :

A.	It takes less than 20 minutes at 15.5 mph(20~30 kph).

B.	Confidence reduction is dependent on time which vehicle is driven at speed greater than or equal to 12.4 mph(20~30 kph).

TPMS Sensor Repair procedures

Replacement 1. Remove the tire. (Refer to Tires/Wheels - "Tire") 2. 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...

TPMS Receiver Schematic Diagrams

C..

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Rear Cross Member Repair procedures

Replacement 1. Raise the vehicle, and make sure it is securely supported. 2. Remove the wheel cap (A). Be careful not to damage to the wheel cap (A) when removing the it. 3. Remove the front wheel and tire (A) from front hub...

Hyundai Sonata LF 2014-2019 Service Manual: Basic Service Symbols