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

Hyundai Elantra AD (2016-2020) Service Manual / Suspension System / Tire Pressure Monitoring System / TPMS Receiver Description and Operation

Description

TPMS Receiver : BCM(body control module) integrated management

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

Removal 1. Remove the valve core and deflate the tire. 2. Remove the side of the tire bead area from the wheel using tire changing machine . • The tire bead should ...

TPMS Receiver Repair procedures

Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the glove box. (Refer to Body - "Glove Box Upper Cover Assembly") 3. Remove the smart key unit. (Refer to Body - "Smart ...

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