Hyundai Santa Fe (TM): Body Electrical System / Rear Occupant Alert

Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual / Body Electrical System / Rear Occupant Alert

Description and operation

Description

The system detects the passenger in the vehicle and prevents the driver from getting off the vehicle with the passenger in the back.

- 1st warning: If you open the driver's door after you open and then close the rear passenger and turn the engine off, the system provides warning by showing message on the cluster and giving voice instruction.

- 2nd warning

1)	The system detects the indoor movement using the rear occupant alert sensor installed on the head lining when the driver gets off the vehicle and locks all the doors.

2)	If any movement inside the vehicle is detected, horn and Hazard Warning Flasher are activated for 25 seconds and the mobile text message is sent.

Components and components location

Components

1. Rear Occupant Alert Sensor
2. Integrated body control unit

3. Cluster (Message pop-up and Voice)

Repair procedures

Removal

1.	Disconnect the negative (-) battery terminal.

2.	Remove the cover (A) by using a flat-tip screwdriver.

3.	Disconnect the connector (A) and then remove the occupant alert sensor.

Installation

1.	Install the occupant alert sensor.

2.	Connect the negative (-) battery terminal.

❮Head Up Display System

Description and operation Description 1. System operation HUD system displays various information on the windshield glass which minimizes the driver’s eye movement to enhance safety and convenience.

Immobilizer System❯

Description and operation Description The immobilizer system will disable the vehicle unless the proper ignition key is used, in addition to the currently available anti-theft systems such as car alarms, the immobilizer system aims to drastically reduce the rate of auto theft.

Other information:

Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual: A/C Pressure Transducer. Description and operation

Description The A/C Pressure Transducer (APT) converts the pressure value of high pressure line into voltage value after measuring it. By converted voltage value, engine ECU controls the cooling fan by operating it high speed or low speed.

Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual: Rear Corner Radar System

Description and operation Description Rear Corner Radar is a system that measures the relative speed and distance from the following vehicles by using two electromagnetic wave radar sensors attached to the rear bumper, and detects any vehicle within the blind spot zone and gives off alarm.