🏷️ Basic Information

Make:

Citroën

Model:

C6

Year:

2005

Market Focus:

European Models

Generation Code:

First Generation (X6)

Chassis Code:

X6

👋 Introduction

Segment:

Executive / Luxury Sedan

Target Audience:

Citroën authorized service technicians, professional mechanics, and advanced DIY enthusiasts.

Competitors:

Peugeot 607, Renault Vel Satis, BMW 5 Series, Mercedes-Benz E-Class, Audi A6, Volkswagen Passat.

Unique Selling Points:

The C6 is known for its distinctive design, advanced technology (e.g., hydropneumatic suspension on some variants), and comfort-focused interior, positioning it as a unique offering in the executive segment.

Manual Value Proposition:

Provides authorized dealer-level technical information to ensure correct and efficient servicing, maintenance, and repair, leading to optimal vehicle performance and longevity.

📋 Manual Details

Regions:

Europe

Estimated Page Count:

Extensive (Specific count not provided, but described as comprehensive)

Type:

Technical Service Repair Manual / Workshop Manual / Technical Handbook

Language:

English

Format:

Not a scanned version (Implies high quality digital or printed format)

📖 Manual Coverage

General:

Comprehensive coverage of all major vehicle systems.

Engine Mechanical:

Detailed information on engine assembly, disassembly, diagnostics, and repair for all specified engine variants.

Engine Management:

Covers fuel injection systems (likely indirect and direct) and ignition systems, including component testing and ECU functions.

Transmission:

In-depth coverage of gearbox operation, maintenance, and repair. Likely includes automatic and manual transmissions if offered.

Drivetrain:

Detailed information on the transaxle, driveshafts, and axles, including maintenance and repair procedures.

Suspension:

Covers front and rear suspension systems, alignment procedures, component replacement, and diagnostics.

Steering:

Detailed information on steering system components, operation, maintenance, and repair, including hydraulic or electric power steering.

Brakes:

Comprehensive coverage of the braking system, including hydraulic components, ABS, and any electronic stability control systems.

Hydraulics:

Specific section dedicated to hydraulic systems, potentially covering hydropneumatic suspension, power steering, or brake hydraulics.

Climate Control:

Detailed information on the air conditioning system, including refrigerant handling, component testing, and repair.

Restraints:

Covers safety restraint systems, primarily airbags and seatbelts, including diagnostic procedures and replacement guidelines.

Maintenance:

Routine maintenance procedures, fluid changes, filter replacements, and inspections.

Troubleshooting:

Diagnostic flowcharts and symptom-based troubleshooting guides for common issues.

Repair:

Step-by-step instructions for component removal, installation, and repair for all covered systems.

Diagnostics:

Information on diagnostic tools, sensor testing, actuator testing, and interpreting diagnostic trouble codes (DTCs).

Electrical System:

Wiring diagrams, component locations, and troubleshooting for the vehicle's electrical systems (though not explicitly listed in contents, expected in a comprehensive manual).

Depth:

Expert Level. Designed for authorized dealer service technicians, indicating a high level of detail suitable for complex diagnostics and repairs.

Scope:

Comprehensive. Covers all aspects from routine maintenance to major component overhauls and advanced diagnostics.

📊 Manual Specifications

Format Type:

Digital (likely PDF, or equivalent) or high-quality print.

Quality:

High quality (stated as 'not scanned version').

Binding:

Not Applicable (if digital) or Professional (if printed).

Paper:

Not Applicable (if digital) or High-Quality, Durable Paper (if printed).

⚙️ Engine Specifications

Engine Options:

3.0L V6 Petrol (likely ES9 V6 PSA engine) and 2.7L HDi V6 Diesel (common rail direct injection).

3.0L V6 Petrol Horsepower:

Approximately 211 PS (155 kW / 208 hp) at 6000 rpm (typical for this engine).

3.0L V6 Petrol Torque:

Approximately 290 Nm (214 lb-ft) at 3750 rpm (typical for this engine).

2.7L Hdi V6 Diesel Horsepower:

Approximately 204 PS (150 kW / 201 hp) at 4000 rpm (typical for this engine).

2.7L Hdi V6 Diesel Torque:

Approximately 440 Nm (325 lb-ft) at 1900 rpm (typical for this engine).

Petrol Injection:

Likely Multi-point Fuel Injection (MPI) or direct injection depending on specific variant.

Diesel Injection:

Common Rail Direct Injection (HDi).

Petrol Engine Code:

Likely ES9A or similar PSA V6 designation.

Diesel Engine Code:

Likely DW12BTED4 or similar PSA V6 HDi designation (though this is a 4-cylinder, the 2.7 is related to Jaguar/Ford AJD-V6 / PSA DT17).

🔧 Transmission

Transmission Type:

Likely a 6-speed automatic transmission (e.g., ZF 6HP26).

Transmission Options:

Manual transmission unlikely for this executive model and engine configurations.

Automatic Features:

Tiptronic (manual selection), adaptive shifting programs, potentially Sport mode.

📐 Dimensions

Length:

Approx. 4,967 mm (195.6 in)

Width:

Approx. 1,891 mm (74.4 in)

Height:

Approx. 1,495 mm (58.9 in)

Curb Weight Petrol:

Approx. 1,750 - 1,800 kg (3,858 - 3,968 lbs)

Curb Weight Diesel:

Approx. 1,850 - 1,900 kg (4,079 - 4,189 lbs)

🛡️ Safety Features

Euroncap Rating:

4 Stars (Achieved in 2006 for adult occupant protection).

ABS:

Standard Anti-lock Braking System.

Esp:

Standard Electronic Stability Program (ESP).

Lane Departure Warning:

Optional feature available on some trims.

Airbags:

Multiple airbags: front, side, curtain, and driver's knee airbag.

Seatbelts:

Pre-tensioning seatbelts with force limiters.

💡 Technology Features

System:

Integrated infotainment system with navigation, radio, CD player, and potentially Bluetooth connectivity.

Features:

Keyless entry and start, parking sensors, cruise control, and optional Lane Departure Warning system.

Options:

Bluetooth hands-free calling and audio streaming capabilities may be present depending on trim level and optional equipment.

🔧 Maintenance

Oil Change Petrol:

Typically 20,000 km (12,500 miles) or 2 years, whichever comes first (check specific model variant for exact interval).

Oil Change Diesel:

Typically 20,000 km (12,500 miles) or 2 years, whichever comes first (check specific model variant for exact interval).

Timing Belt Petrol:

Typically 120,000 km (75,000 miles) or 10 years, whichever comes first (for the V6 engine, often a timing chain is used, but belt intervals are critical if applicable).

Timing Belt Diesel:

Typically 150,000 km (93,000 miles) or 10 years, whichever comes first (for HDi engines, although V6 diesels might have belts or chains).

Engine Oil Petrol Viscosity:

Likely 5W-30 or 5W-40 meeting PSA B71 2290/2294 standards.

Engine Oil Diesel Viscosity:

Likely 5W-30 meeting PSA B71 2290 standards (low SAPS).

Transmission Fluid Automatic:

Specific ATF for ZF 6HP26 transmission (e.g., Lifeguard 6).

Coolant:

Ethylene glycol-based coolant with anti-corrosion additives, typically PSA specification (e.g., GLACEOL RX Type D).

Suspension:

While the C6 often features advanced hydractive suspension, potential issues can include leaks, sensor failures, or pump issues, requiring specialized knowledge for repair.

Electronics:

As with many advanced vehicles of this era, electrical gremlins, sensor malfunctions, and issues with infotainment systems can occur, necessitating thorough diagnostic procedures.

Diesel Particulate Filter:

For the 2.7 HDi, DPF regeneration issues or clogging can be a concern, especially with predominantly urban driving cycles.

📚 Vehicle History

Citroen Philosophy:

Citroën has a long history of innovation and avant-garde design, particularly in suspension technology (e.g., DS) and comfort-oriented vehicles.

C6 Lineage:

The C6 succeeded the Citroën XM, aiming to re-establish Citroën's presence in the large luxury sedan segment. It drew inspiration from the C5 and concepts like the C6 Lignage concept car.

Production Period:

2005 - 2012

Manufacturing Location:

Rennes-la-Janais plant, France.

🏆 Awards & Recognition

Design Awards:

The Citroën C6 received positive acclaim for its bold and distinctive design, often highlighted in automotive press reviews.

Comfort Ratings:

Consistently praised for its exceptional ride comfort, largely attributed to its advanced suspension systems.