🏷️ Basic Information

Make:

Citroën

Model:

C4

Year:

2004

Engine Variant:

1.6i 16V

Engine Code:

TU5JP4

👋 Introduction

Market Position:

The Citroën C4 (first generation) was positioned as a stylish and comfortable compact family car, aiming to blend practicality with a distinctive French flair. It competed in a crowded segment against vehicles like the Volkswagen Golf, Ford Focus, and Opel Astra.

Competitive Analysis:

The C4 offered a comfortable ride, innovative features (like the fixed-hub steering wheel in some versions), and a spacious interior, differentiating it from some more performance-oriented rivals. The 1.6i 16V engine provided a balance of fuel efficiency and adequate performance for everyday driving.

Key Features:

Unique design, comfortable ride quality, spacious interior, good safety features for its time, availability of various engine options including the 1.6i 16V.

📋 Manual Details

Coverage Areas:

Complete Service and Repair

Page Count:

Estimated 1000+ pages (typical for comprehensive factory manuals)

Manual Type:

Factory Service Repair Manual

Language:

English

Format:

PDF

📖 Manual Coverage

Systems Covered:

Engine Mechanical, Engine Management (ECU), Fuel System, Ignition System, Cooling System, Exhaust System, Lubrication System, Clutch, Manual Transmission, Automatic Transmission (if applicable to specific build), Drive Axles, Suspension (Front & Rear), Steering System, Braking System (Hydraulic, ABS, ESP), Electrical System (Body Control Module, Lighting, Power Accessories), HVAC System, Body & Chassis, Interior Components, Safety Systems (Airbags, Seatbelts), Diagnostic Procedures, Troubleshooting Guides.

Procedures Included:

Routine Maintenance, Scheduled Servicing, Diagnosis of Faults, Step-by-Step Repair Procedures for all major components, Engine Overhaul, Transmission Overhaul, Brake System Servicing, Suspension Component Replacement, Steering System Alignment, Electrical Troubleshooting and Repair, HVAC System Servicing, Body Panel Repair and Alignment, Body Electrical Component Replacement, Diagnostic Scan Tool Procedures, Wiring Harness Repair.

Technical Depth:

Comprehensive; covers everything from basic fluid changes to complete engine and transmission rebuilds, including detailed diagnostic procedures and electrical schematics.

📊 Manual Specifications

File Format:

PDF

Print Quality:

High resolution, printable for individual pages or sections.

Binding Type:

Digital Download (PDF)

Paper Type:

N/A (Digital)

⚙️ Engine Specifications

Engine Displacement:

1.6 Liters (1587 cc)

Engine Configuration:

Inline-4 Cylinder

Valve Train:

DOHC (Double Overhead Camshaft), 16 Valves

Aspiration:

Naturally Aspirated

Horsepower:

Approximately 109-110 PS (108-109 bhp / 80-81 kW) at 6000 rpm

Torque:

Approximately 147-150 Nm (108-111 lb-ft) at 4000 rpm

Fuel System:

Multi-point Fuel Injection (MPI)

Fuel Type:

Unleaded Gasoline (Petrol)

Cooling System:

Liquid-Cooled

Emission Control:

Catalytic Converter, Lambda Sensors (Oxygen Sensors)

🔧 Transmission

Standard Transmission:

5-Speed Manual Transmission

Optional Transmission:

4-Speed Automatic Transmission (AL4/DP0)

Transmission Features:

The AL4 automatic transmission, common in PSA vehicles of this era, featured a sequential 'Tiptronic' style manual override.

📐 Dimensions

Body Styles:

Hatchback (3-door and 5-door)

Wheelbase:

Approximately 2605 mm (102.6 inches)

Length:

Approximately 4276 mm (168.3 inches)

Width:

Approximately 1749 mm (68.9 inches)

Height:

Approximately 1465 mm (57.7 inches)

Curb Weight:

Approximately 1230-1300 kg (2712-2866 lbs), depending on configuration

🛡️ Safety Features

Euro Ncap Rating:

5 Stars (for models tested)

Active Safety Features:

Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD), Emergency Brake Assist (EBA), Traction Control System (TCS), Electronic Stability Program (ESP) - availability varies by trim level and market.

Passive Safety Features:

Multiple Airbags (Driver, Passenger, Side, Curtain), Front and Rear Seatbelt Pretensioners, ISOFIX Child Seat Anchorage Points, Energy-Absorbing Body Structure.

💡 Technology Features

Infotainment System:

Standard radio/CD player with steering wheel controls. Higher trims may feature a more advanced system with a central display. The manual would cover basic operation and potential troubleshooting.

Driver Assistance:

Cruise Control and Speed Limiter were common options. Parking sensors were also available. Advanced driver-assistance systems (ADAS) were not prevalent in this model year.

Connectivity Options:

Basic connectivity through AUX input or CD changer for audio. Bluetooth hands-free kits were sometimes factory or dealer fitted.

🔧 Maintenance

Service Intervals:

Typically 20,000 km (12,500 miles) or 12 months for oil changes and major services, whichever comes first. Specific intervals for other components (e.g., timing belt, brake fluid) are detailed in the manual.

Engine Oil Type:

Typically PSA B71 2312 specification (e.g., Total Quartz 9000 0W-30 or equivalent low-viscosity synthetic oil). The manual will specify the exact grade and capacity.

Coolant Type:

Antifreeze/Coolant conforming to PSA standard (e.g., GFL 41-D-01).

Brake Fluid Type:

DOT 4 Brake Fluid.

Transmission Fluid Manual:

GL-4 Gear Oil, typically 75W-80 or 75W-90 viscosity. Capacity approximately 2.0 liters.

Transmission Fluid Automatic:

ESSO LT 71141 or equivalent ATF (Automatic Transmission Fluid). Capacity approximately 4.0-4.5 liters for a drain and fill.

Known Issues:

Common issues for the 1.6i 16V engine can include ignition coil failure, occasional starter motor issues, and potential issues with the electronic throttle body. The AL4 automatic transmission is known for its occasional tendency to judder or engage harshly if not properly maintained. Certain electrical components, such as sensors or the BSI (Body Systems Interface), can also be prone to failure over time, leading to various warning lights.

Timing Belt Replacement Interval:

Typically 120,000 km (75,000 miles) or 5 years, whichever comes first. The manual will provide the precise interval and procedure.

📚 Vehicle History

Brand Heritage:

Citroën, a French manufacturer, has a long history of innovation in automotive design and engineering, known for its comfortable and often avant-garde vehicles. The C4 continues this legacy with its distinctive styling and focus on passenger comfort.

Model Evolution:

The Citroën C4 was introduced in 2004 as a replacement for the Citroën Xsara. It was designed as a more modern and premium offering in the compact car segment, featuring a distinctive exterior and interior design. The 2004 model represents the first generation of the C4, which received a facelift in 2008.

Production Period:

2004 - 2010 (First Generation)

Manufacturing Locations:

Primary manufacturing was at PSA Peugeot Citroën's plant in Mulhouse, France. Other assembly sites may have existed depending on market.

🏆 Awards & Recognition

Recognitions:

The Citroën C4 achieved a 5-star Euro NCAP safety rating, highlighting its strong performance in crash tests for its segment at the time of its release.