2023 Hyundai Sonata Hybrid Service Manual – OEM Guide for Battery, GDI, and EV Systems

2023 Hyundai Sonata Hybrid Workshop & Service Manual – Full OEM Maintenance Guide (PDF & USB)

Get unmatched control over your 2023 Hyundai Sonata Hybrid’s performance, reliability, and longevity with this official OEM service manual—the same reference used by Hyundai-certified repair shops and dealerships. Designed specifically for the 2023 hybrid model, this comprehensive manual covers mechanical, electrical, and high-voltage systems in exacting detail.

Whether you’re servicing the 2.0L GDI hybrid engine, diagnosing a high-voltage battery issue, or calibrating advanced driver-assistance systems (ADAS), this guide empowers professionals and DIYers alike.

Available as an instant PDF download or USB flash drive, so you can take it right into the garage.

🔧 Complete Hybrid System Support

The manual offers precise factory repair steps for the Sonata Hybrid’s electrified powertrain, including:

• Battery Management System (BMS) troubleshooting and thermal control testing

• Inverter and converter repair, wiring harness checks, and fluid loop bleeding

• Electric motor diagnostics, clutch integration guides, and hybrid power split system details

• Procedures for Hybrid Control Unit (HCU) resets and software calibration

• Safe servicing of high-voltage components, with PPE guidelines and disconnection protocols

All instructions follow OEM procedures for high-voltage safety compliance.

🛠️ Gasoline Engine & Hybrid Transmission Repairs

The 2.0L Atkinson-cycle GDI engine works hand-in-hand with the electric motor. This manual ensures both systems get proper care:

• Fuel rail diagnostics, GDI pump replacement, and combustion sensor testing

• Timing chain servicing, camshaft alignment, and variable valve timing (VVT) troubleshooting

• Step-by-step repairs for the hybrid automatic transmission (eCVT), solenoid valve checks, and fluid specifications

• Instructions for auxiliary cooling systems and hybrid-specific coolant loops

• Torque specs, gasket diagrams, and service interval references for every component

This section is vital for keeping fuel economy and hybrid power delivery optimal.

⚡ Advanced Electrical & Diagnostic Systems

Handle modern Sonata Hybrid tech with confidence using OEM electrical diagrams and test procedures:

• Full wiring schematics for hybrid, chassis, infotainment, and powertrain systems

• OBD-II fault code reference charts, signal testing, and sensor voltage tables

• Drive mode switch logic, EV/HEV module communication, and inverter control diagnostics

• TPMS, head-up display (HUD), and steering angle sensor calibration

• Full coverage of fuse boxes, junction connectors, and ground point layouts

Supports any scan tool compatible with Hyundai’s CAN and UDS protocol systems.

🛞 Suspension, Steering & Safety Systems

Keep your hybrid’s handling tight and safe with detailed mechanical guidance:

• Electronic Parking Brake (EPB) reset instructions and rear brake actuator checks

• Procedures for regenerative braking balance, ABS signal tests, and ESC troubleshooting

• Electric power steering (EPS) diagnostics and rack angle learning

• Suspension component torque specs, bushing and shock absorber service, and ride height charts

• ADAS calibration procedures for forward collision assist, lane follow assist, and blind spot detection

Essential for post-collision repair or after parts replacement.

✅ Why Choose This 2023 Sonata Hybrid Repair Manual?

• OEM-sourced service content with exact manufacturer specs

• Covers engine, hybrid battery, inverter, transmission, ADAS, and electrical systems

• Ideal for repair professionals, technical trainers, and hybrid enthusiasts

• Works with or without dealership software—just follow the documented procedures

• Delivered as a PDF file for tablets and PCs or as a USB stick for plug-and-play access