Hyundai Sonata LF: Charging System / Battery Troubleshooting

Battery Repair procedures

Removal 1. Remove the air duct. (Refer to Engine Mechanical System - "Air Cleaner") 2. Disconnect the battery (-)terminal (A) and then (+)terminal (B)...

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...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Side Impact Sensor (SIS) Description and Operation

Description Side Impact Sensor (SIS) system consists of two P-SIS which are installed at each center of the front door module (LH and RH) and two SIS which are installed at each center pillar nearby (LH and RH). Side Pressure Sensor is also called P-SIS because it detects pressure due to collision at its mounting location...

Hyundai Sonata LF 2014-2019 Service Manual: Relay Box (Engine Compartment) Repair procedures

Inspection 1. Disconnect the negative (-) battery terminal. 2. Pull out the relay from the engine compartment relay block. Power Relay (Type A) Check for continuity between the terminals. 1) Start relay 2) Deicer relay 3) Head lamp (high) relay 4) Blower relay 5) Power outlet relay 6) E-CVVT relay 1...