2026 Genesis G90 Service Manual – Expert Repairs & Maintenance

2026 Genesis G90 (RS4) Service & Repair Manual – The Ultimate Guide for Maintenance & Troubleshooting

The 2026 Genesis G90 (RS4) is a luxury flagship sedan that blends cutting-edge technology, refined performance, and innovative safety features. Whether you’re a car enthusiast, DIY mechanic, or professional technician, this factory-certified service manual provides detailed repair procedures, diagnostics, and maintenance guidelines to keep your Genesis G90 in peak condition.

Engine & Powertrain – Optimize Performance & Longevity

The 2026 Genesis G90 is equipped with an advanced twin-turbo V6 engine and an optional hybrid powertrain, delivering smooth acceleration, fuel efficiency, and high performance. Keeping the engine, turbochargers, and cooling system in top shape is essential for long-term reliability.

• Turbocharger & Fuel System Maintenance – Optimize fuel efficiency and boost engine power.

• Engine Diagnostics & Performance Tuning – Maximize output with proper ECU calibration and spark plug inspections.

• Hybrid Powertrain Servicing – Maintain the battery system, inverter, and electric drive components.

Transmission & Drivetrain – Ensure a Smooth Ride

The 8-speed automatic transmission in the Genesis G90 (RS4) is engineered for seamless shifting and precision handling. Regular maintenance ensures optimal performance and driving comfort.

• Transmission Fluid & Filter Replacement – Improve longevity and prevent gear slipping.

• AWD & RWD System Care – Enhance traction control and handling stability.

• Differential & Driveshaft Maintenance – Reduce vibration and extend drivetrain lifespan.

Braking & Suspension – Enhance Safety & Driving Comfort

A well-maintained braking system and adaptive suspension are crucial for driver confidence and passenger comfort. The Genesis G90 offers an electronically controlled suspension for a luxurious ride.

• Regenerative Braking System Diagnostics – Ensure maximum energy recovery and braking efficiency.

• Brake Pad & Rotor Inspections – Prevent wear and ensure optimal stopping power.

• Electronic Suspension & Adaptive Dampers – Fine-tune ride quality for comfort and handling.

Electrical & Infotainment – Keep Your Tech Running Smoothly

The Genesis G90 is packed with next-gen infotainment, advanced driver assistance systems (ADAS), and intelligent connectivity features. Regular software updates and electrical system diagnostics ensure everything functions seamlessly.

• OBD-II Diagnostics & ECU Software Updates – Improve performance and fuel efficiency.

• Navigation System Calibration – Ensure accurate GPS tracking and real-time traffic updates.

• Wireless Charging & Connectivity Troubleshooting – Optimize Bluetooth, Wi-Fi, and wireless smartphone integration.

Interior & Exterior Maintenance – Preserve Luxury & Functionality

A pristine interior and exterior keep your 2026 Genesis G90 looking and feeling like new. This section of the manual includes essential detailing techniques, climate control servicing, and interior technology upkeep.

• Premium Leather & Upholstery Care – Maintain luxurious comfort and interior elegance.

• Exterior Paint Protection & Body Panel Alignments – Prevent scratches, dents, and fading.

• Sunroof, Power Seats & Smart Key System Troubleshooting – Ensure all features function flawlessly.

Why This 2026 Genesis G90 (RS4) Service Manual is Essential

This comprehensive factory service manual offers:

✅ Factory-certified repair procedures for the engine, transmission, and electrical system.
✅ Step-by-step troubleshooting for brakes, infotainment, and hybrid components.
✅ Detailed maintenance schedules to prevent costly repairs.
✅ Full wiring diagrams for electrical system repairs and modifications.
✅ Available in PDF & USB formats for instant access anytime, anywhere.

Download the 2026 Genesis G90 service manual today and maintain your luxury sedan like new!