Hyundai Sonata LF: Engine Electrical System / Ignition System

Troubleshooting

Troubleshooting Ignition System SymptomSuspect AreaRemedyEngine will not start or is hard to start (Cranks OK)Ignition lock switchInspect ignition lock switch, or replace as requiredIgnition coilInspect ignition coil, or replace as requiredSpark plugsInspect spark plugs, or replace as requiredIgnition wiring disconnected or brokenRepair wiring, or replace as requiredRough idle or stallsIgnition wiringRepair wiring, or replace as requiredIgnition coilInspect ignition coil, or replace as requiredEngine hesitates/poor accelerationSpark plugs and spark plug cablesInspect spark plugs / cable, or replace as requiredIgnition wiringRepair wiring, or replace as requiredPoor mileageSpark plugs and spark plug cablesInspect spark plugs / cable, or replace as required Charging System SymptomSuspect AreaRemedyCharging warning indicator does not light with ignition switch "ON" and engine off...

Description and Operation

Description Ignition timing is controlled by the electronic control ignition timing system. The standard reference ignition timing data for the engine operating conditions are pre-pro grammed in the memory of the ECM (Engine Control Module)...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: High Mounted Stop Lamp Repair procedures

Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the rear package tray trim. (Refer to Body - "Rear Package Tray Trim") 3. Remove the high mounted stop lamp after disengaging the mounting clip. Installation 1. Install the rear high mounted stop lamp...

Hyundai Sonata LF 2014-2019 Service Manual: Water pump Repair procedures

Removal 1. Loosen the drain plug (A), and drain the engine coolant. Remove the radiator cap to drain with speed.     System is under high pressure when the engine is hot.To avoid danger of releasing scalding engine coolant, remove the cap only when the engine is cool...