2021 Genesis G90 Service and Repair Manual

This factory service and repair manual for the 2021 Genesis G90 puts three trims — Premium, Prestige and Ultimate — on one four-door sedan, with either a turbocharged 3.3L DOHC V6 or a naturally aspirated 5.0L DOHC V8 under the hood. Both are gasoline engines, and the manual treats them separately where it must: intake and boost hardware, oil supply, clearances and torque values differ between them, and so do the sensor readings a diagnostic routine expects to find on each.

Engines covered

• 3.3L V6 — DOHC, turbocharged, gasoline
• 5.0L V8 — DOHC, naturally aspirated, gasoline

Body styles covered

• 4-door sedan

Trims covered

• Premium
• Prestige
• Ultimate

Known issues on the 2021 G90. A single recall is recorded for this year, and it concerns the left turbocharger oil feed pipe, which can deteriorate and leak oil where the surrounding parts are hot enough to ignite it. Owners have logged five complaints, one each on the electrical system, steering and tires among them. The manual covers the turbocharger's oil routing and sealing with torque specifications, the steering system with its adjustment values and fault-tracing steps, and the low-voltage circuits with wiring diagrams and connector locations.