Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSHYUNDAI2003SONATA LX, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCEAPPLICATIONINTRODUCTIONMODEL COVERAGENOTES

2003 Hyundai Sonata LX, Standard

Model Coverage: Notes

2003 Hyundai Sonata LX, StandardSECTION Notes

2003 MODEL COVERAGE

MODEL

ENGINE

⁽¹⁾ ENGINE ID

FUEL SYSTEM

IGNITION SYSTEM

Accent

1.6L 4-Cyl. DOHC

MFI

DIS

Elantra

2.0L 4-Cyl. DOHC

MFI

DIS

Santa Fe

2.4L 4-Cyl. DOHC

MFI

DIS

.....

2.7L V6 DOHC

MFI

DIS

.....

3.5L V6 DOHC

MFI

DIS

Sonata

2.4L 4-Cyl. DOHC

MFI

DIS

.....

2.7L V6 SOHC

MFI

DIS

Tiburon

2.0L 4-Cyl. DOHC

MFI

DIS

.....

2.7L V6 DOHC

MFI

DIS

XG350

3.5L V6 DOHC

MFI

DIS

⁽¹⁾	Engine is identified by 8th character of VIN.

Fig 1: Identifying Vehicle Identification Number Definition (Accent)

Courtesy of HYUNDAI MOTOR CO.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.