Hyundai Sonata LF: Engine Control / Fuel System

Hyundai Sonata LF 2014-2019 Service Manual / Engine Control / Fuel System

Exhaust Emission Control System

Description and Operation Description Exhaust emissions (CO, HC, NOx) are controlled by a combination of engine modifications and the addition of special control components...

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Hyundai Sonata LF 2014-2019 Service Manual: Knock Sensor (KS) Repair procedures


Removal 1. Turn the ignition switch OFF and disconnect the battery negative (-) cable. 2. Remove the intake manifold (Refer to “Intake And Exhaust System” in EM group). 3. Disconnect the injector connector (A). 4. Remove the installation bolt (B), and then remove the sensor from the cylinder block...

Hyundai Sonata LF 2014-2019 Service Manual: Immobilizer Control Unit Repair procedures


Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the driver crash pad lower panel. (Refer to Body - "Crash Pad Lower Panel") 3. Remove the knee airbag module. (Refer to Restraint - "Knee Airbag (KAB) Module") 4. Disconnect the connector of the immobilizer unit and then remove the immobilizer unit (A) after loosening a nut...

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