The Kia Opirus, a full-size luxury sedan produced from 2003 to 2011, represents a significant step in Kia's evolution towards more premium vehicles. Built on a shared platform with the Hyundai Grandeur and influenced by European design, the Opirus offers a spacious interior, a focus on ride comfort, and quiet operation. Its V6 engine, typically around 3.5 liters, provided ample power for its intended role as a comfortable cruiser. This generation of the Opirus was designed to compete in a segment that valued refinement and amenities, aiming to provide a compelling alternative to established luxury brands.
This comprehensive workshop repair service manual for the 2004 Kia Opirus covers all models, engines, trims, and transmission types. It is an invaluable resource for owners and technicians, providing detailed guidance on general maintenance, troubleshooting, diagnostic procedures, and repair processes. The manual includes extensive information on engine service and repair, transmission service, brake systems, electrical systems with wiring diagrams, suspension, steering, cooling systems, fuel injection, emissions, HVAC, engine control systems, chassis and body, restraint systems, and interior components. With step-by-step instructions, disassembly and assembly details, and cleaning procedures, this manual ensures proper upkeep and repair of the vehicle.
Market Segment:
Full-size Sedan
Generation Code:
First Generation (GH)
Segment:
Luxury Full-Size Sedan
Key Competitors:
Hyundai Grandeur (shared platform), Lexus ES, Toyota Avalon, Buick Park Avenue, Chrysler 300
Design Philosophy:
European styling influences, focus on comfort and quietness, premium interior appointments
Manual Advantage:
Empowers owners to perform maintenance and repairs, saving costs and ensuring proper upkeep
General Coverage:
All Models/Engines/Trim/Transmissions Types
Estimated Page Count:
Extensive (hundreds of pages)
Type:
Workshop Repair Service Manual
Engine Service And Repair:
Yes
Transmission Service And Repair:
Yes
Fuel Injection And Fuel System:
Yes
HVAC Heater And Air Conditioning:
Yes
Engine Control System:
Yes
Restraint System Airbags:
Yes
Differential And Drive Axles:
Yes
Periodic Lubrication Schedule:
Yes
Diagnostic Procedures:
Yes
Disassembly And Assembly:
Yes
Cleaning And Reinstallation:
Yes
Numbered Instructions:
Yes
Depth:
Comprehensive (professional technician level)
Printability:
Full Printable
Zoom Functionality:
Yes (Zoom IN/OUT)
Binding:
Digital Download (No physical binding)
Paper Type:
N/A (Digital)
Software Requirements:
Adobe PDF Reader & WinZip
Operating System Compatibility:
All Versions of Windows & Mac
Engine Type:
V6, Multi-Valve
Displacement:
Approximately 3.5 Liters (3497 cc)
Engine Code:
G6CU (common for this generation)
Horsepower Approx:
200 - 217 hp
Torque Approx:
220 - 235 lb-ft
Fuel Delivery:
Electronic Fuel Injection (EFI)
Transmission Type:
5-Speed Automatic
Optional Transmission:
N/A (Automatic was standard for most markets)
Transmission Features:
Electronically controlled, adaptive shift logic
Length:
Approximately 4950 mm (194.9 inches)
Width:
Approximately 1870 mm (73.6 inches)
Height:
Approximately 1485 mm (58.5 inches)
Wheelbase:
Approximately 2800 mm (110.2 inches)
Curb Weight Approx:
1650 - 1750 kg (3638 - 3858 lbs)
NHTSA Frontal Crash Rating:
Not specifically rated by NHTSA for this year/model in many markets, but generally considered safe for its class.
ABS:
Standard (Anti-lock Braking System)
Traction Control:
Often standard or optional (TCS)
Electronic Stability Control:
Optional or standard depending on trim and market
Airbags:
Front, side, and curtain airbags (depending on trim)
Seatbelts:
Three-point seatbelts with pretensioners
Audio System:
Standard AM/FM/CD player, optional premium audio system (e.g., Bose)
Navigation:
Optional factory navigation system
Parking Assistance:
Rear parking sensors (optional on some trims)
Oil Change Interval Approx:
Every 7,500 miles (12,000 km) or 6 months, whichever comes first (synthetic recommended)
Engine Air Filter Replacement:
Every 15,000 - 30,000 miles (24,000 - 48,000 km) or as needed based on driving conditions
Cabin Air Filter Replacement:
Every 15,000 - 20,000 miles (24,000 - 32,000 km)
Transmission Fluid Change:
Every 45,000 - 60,000 miles (72,000 - 96,000 km) or as per manual recommendation
Engine Oil Type:
API SN or ILSAC GF-5, SAE 5W-30 (refer to manual for exact specification)
Coolant Type:
Ethylene glycol-based, OAT (Organic Acid Technology) coolant, typically red or pink
Transmission Fluid Type:
ATF SP-III (or equivalent approved for Hyundai/Kia)
Brake Fluid Type:
DOT 3 or DOT 4
Common Wear Items:
Suspension bushings, control arms, front sway bar links, exhaust system components due to age
Engine Performance:
Occasional minor oil leaks from valve cover gaskets or oil pan; carbon buildup on intake valves in high-mileage vehicles
Electrical System:
Corrosion on ground points, potential issues with door lock actuators or window regulators
Brand Focus:
Kia's transition towards more upmarket and larger vehicles, leveraging global partnerships (Hyundai)
Development Basis:
Based on the Hyundai Grandeur platform, designed with significant European influence in styling and tuning.
Production Years:
2003-2011
Manufacturing Location:
South Korea
Initial Reception:
Praised for its comfortable ride, spacious interior, and attractive styling for its price point, though some critics noted its performance and handling weren't as sharp as some European rivals.
