2018 Hyundai Ioniq Service and Repair Manual

Hyundai sold the 2018 Ioniq in three distinct powertrains — full hybrid, plug-in hybrid, and battery electric — and each one carries its own specifications and service sequences. This factory service and repair manual is keyed to the exact year, engine and trim of your car, so every figure in it is the one Hyundai published for that configuration, not an approximation borrowed from an adjacent year or a different Ioniq variant.

Engines covered

• 1.6L inline-four full hybrid (96 cu in) — DOHC, naturally aspirated, gasoline
• Battery-electric drive (EV)
• 1.6L inline-four plug-in hybrid (96 cu in) — DOHC, naturally aspirated, gasoline

Body styles covered

• 4-door hatchback

Trims covered

• Electric
• Electric Limited
• Electric Plus Limited
• Electric Plus Preferred
• Electric Plus SE
• Electric Plus Ultimate
• Electric SE
• GLS Premium
• Hybrid Blue
• Hybrid Limited
• Hybrid SE
• Hybrid SEL
• Limited
• Plug-In Hybrid
• Plug-In Hybrid Limited

Whether you are isolating a fault in a high-voltage system or keeping the 1.6L four-cylinder on its scheduled maintenance, this manual holds you to the procedure and specification Hyundai wrote for your specific 2018 Ioniq.