Hyundai Sonata: Charging System / Battery Sensor Description and Operation

Description
Vehicles have many control units that use more electricity. These units control their own system based on information from diverse sensors. It is important to have a stable power supply as there diverse sensors giving a variety of information. Battery sensor is mounted on battery (-) terminal. It transmits battery voltage, current, temperature information to ECM. ECM controls generating voltage by duty cycle based on these signals.

Battery Troubleshooting
Troubleshooting ...

Battery Sensor Repair procedures
Removal 1. Disconnect the battery negative (-) cable. 2. Disconnect the battery sensor connector (A). 3. Remove the battery negative (-) cable after removing the bolts (B). Installation ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Idler Repair procedures
Removal and Installation 1. Remove the drive belt. (Refer to Timing System - "Dreve Belt") 2. Remove the idler (A). Tightening torque : 42.2 ~ 53.9 N.m (4.3 ~ 5.5 kgf.m, 31.1 ~ 39.8 lb-ft) 3. Install in the reverse order of removal. ...

Hyundai Sonata LF 2014-2019 Owners Manual: Start-up
You can start the engine without inserting the key. NOTICE To prevent damaging the smart key: Keep the smart key away from water or any liquid and fire. If the inside of the smart key gets damp (due to drinks or moisture), or is heated, internal circuit may malfunction, excluding the car from ...

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