Hyundai Sonata: General Information / Troubleshooting
| Troubleshooting |
| Ignition System |
| Symptom | Suspect Area | Remedy |
| Engine will not start or is hard to start (Cranks OK) | Ignition lock switch | Inspect ignition lock switch, or replace as required |
| Ignition coil | Inspect ignition coil, or replace as required | |
| Spark plugs | Inspect spark plugs, or replace as required | |
| Ignition wiring disconnected or broken | Repair wiring, or replace as required | |
| Rough idle or stalls | Ignition wiring | Repair wiring, or replace as required |
| Ignition coil | Inspect ignition coil, or replace as required | |
| Engine hesitates/poor acceleration | Spark plugs and spark plug cables | Inspect spark plugs / cable, or replace as required |
| Ignition wiring | Repair wiring, or replace as required | |
| Poor mileage | Spark plugs and spark plug cables | Inspect spark plugs / cable, or replace as required |
| Charging System |
| Symptom | Suspect Area | Remedy |
| Charging warning indicator does not light with ignition switch "ON" and engine off. | Fuse blown | Check fuses |
| Light burned out | Replace light | |
| Wiring connection loose | Tighten loose connection | |
| Electronic voltage regulator | If light turns off, replace voltage regulator. | |
| Charging warning indicator does not go out with engine running. (Battery requires frequent recharging) | Drive belt loose or worn | Adjust belt tension or replace belt |
| Battery cable loose, corroded or worn | Inspect cable connection, repair or replace cable | |
| Electronic voltage regulator or alternator | If light turns off, replace voltage regulator or alternator | |
| Wiring | Repair or replace wiring | |
| Overcharge | Electronic voltage regulator | If light turns off, replace voltage regulator. |
| Voltage sensing wire | Repair or replace wiring | |
| Discharge | Drive belt loose or worn | Adjust belt tension or replace belt |
| Wiring connection loose or short circuit | Inspect wiring connection, repair or replace wiring | |
| Electronic voltage regulator or alternator | If light turns off, replace voltage regulator or alternator | |
| Poor grounding | Inspect ground or repair | |
| Worn battery | Replace battery |
| Starting System |
| Symptom | Suspect Area | Remedy |
| Engine will not crank | Battery charge low | Charge or replace battery |
| Battery cables loose, corroded or worn out | Repair or replace cables | |
| Transaxle range switch (Vehicle with automatic transaxle only) | Refer to AT group-automatic transaxle | |
| Fuse blown | Replace fuse | |
| Starter motor faulty | Replace | |
| Ignition switch faulty | Replace | |
| Engine cranks slowly | Battery charge low | Charge or replace battery |
| Battery cables loose, corroded or worn out | Repair or replace cables | |
| Starter motor faulty | Replace | |
| Starter keeps running | Starter motor faulty | Replace |
| Ignition switch | Replace | |
| Starter spins but engine will not crank | Short in wiring | Repair or replace wiring |
| Pinion gear teeth broken or starter motor | Replace | |
| Ring gear teeth broken | Replace fly wheel or torque converter |
Special Service Tools
Special Service Tools
Tool (Number and name)IllustrationUse09373-27000Alternator pulley remover wrenchRemoval and installation of alternator pulley 09964-C1100SCC reflectorReflector to a ...
Ignition System
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Other information:
Hyundai Sonata LF 2014-2019 Owners Manual: Recommended Lubricants and Capacities
To help achieve proper engine and powertrain performance and durability, use
only lubricants of the proper quality. The correct lubricants also help promote
engine efficiency that results in improved fuel economy.
Recommended SAE viscosity number
CAUTION
Always be sure to clean the area around a ...
Hyundai Sonata LF 2014-2019 Service Manual: Components and Components Location
Components
[Manual Seat Type]
1. Front seat headrest2. Front seat headrest guide3. Front seat back board4. Front seat back frame assembly5. Front seat back pad6. Front seat back heater7. Front seat cushion frame assembly8. Front seat shield cushion pad9. Front seat cushion heater mat10. Heig ...
