2021 Hyundai Ioniq Service and Repair Manual
Hyundai sold the 2021 Ioniq in three distinct powertrains — full hybrid, plug-in hybrid, and battery electric — which makes precise fitment matter more here than on most cars. This factory service and repair manual is keyed to this exact year, engine and trim, so every specification and sequence it quotes is the one Hyundai published for your Ioniq rather than a figure borrowed from a different variant wearing the same badge.
Engines covered
- 1.6L inline-four full hybrid (96 cu in) — DOHC, naturally aspirated, gasoline
- 1.6L inline-four plug-in hybrid (96 cu in) — DOHC, naturally aspirated, gasoline
- Battery-electric drive (EV)
Body styles covered
- 4-door hatchback
Trims covered
- Electric Limited
- Electric Preferred
- Electric SE
- Electric Ultimate
- GLS Premium
- Hybrid Blue
- Hybrid Essential
- Hybrid Limited
- Hybrid Preferred
- Hybrid SE
- Hybrid SEL
- Hybrid Ultimate
- Limited
- Plug-In Hybrid Essential
- Plug-In Hybrid Limited
- Plug-In Hybrid Preferred
- Plug-In Hybrid SE
- Plug-In Hybrid SEL
- Plug-In Hybrid Ultimate
Known issues on the 2021 Ioniq. No recalls are on federal record for the 2021 Ioniq. No complaints and no technical service bulletins are logged for the year either — a clean federal sheet across the hybrid, plug-in hybrid, and battery electric lines. A clean record does not make high-voltage work forgiving, though, and the factory diagnostic and repair procedures for each of those powertrains are here.
From a high-voltage battery inspection on an Electric Ultimate to a routine service interval on a Hybrid Blue's 1.6L, it keeps you on Hyundai's own procedure and the correct specification for your specific 2021 Ioniq.
