🏷️ Basic Information

Make:

Audi

Model:

A6

Year:

2005

👋 Introduction

Market Position:

The Audi A6 (C6 platform) in 2005 was positioned as a premium mid-size luxury sedan, competing directly with vehicles like the BMW 5 Series, Mercedes-Benz E-Class, and Lexus GS. It offered advanced technology, refined driving dynamics, and high-quality interior appointments.

Competitive Analysis:

The 2005 A6 was lauded for its elegant styling, Quattro all-wheel-drive system, and a range of powerful engines. This repair manual provides the necessary technical documentation to maintain and repair these sophisticated systems, ensuring the vehicle's performance and longevity against its premium competitors.

Key Features:

Comprehensive coverage, instant download for immediate access, printable pages, detailed procedures, and specific technical data for the 2005 Audi A6.

📋 Manual Details

Coverage Areas:

Comprehensive service, repair, and maintenance for the 2005 Audi A6, covering all major systems and components.

Page Count:

Not specified in provided information. Typically, such comprehensive manuals range from 1500-3000+ pages.

Manual Type:

Service and Repair Manual

Language:

Spanish

Format:

Digital Download (PDF)

📖 Manual Coverage

Systems Covered:

Engine Mechanical, Engine Control System, Fuel System, Emission Control, Cooling System, Lubrication System, Ignition, Starting & Charging, Automatic Transmission, Manual Transmission, Drivetrain (Transfer Case, Driveshafts, Differentials, Axles), Suspension, Steering System, Brake System (including Parking Brake), Climate Control (Air Conditioning), Supplemental Restraint System (SRS), Seatbelts, Engine Immobilizer, Cruise Control, Wiper & Washer System, Door Locks, Audio/Visual Systems, Horn, Glass & Mirrors, Instrument Panel, Seats, Body & Interior, Exterior Trim, Electrical Systems, Multiplex/CAN Communication.

Engine Mechanical Coverage:

Detailed procedures for cylinder head removal and installation, piston and connecting rod service, crankshaft removal and installation, valve timing, oil pump and pan service, engine block machining specifications.

Engine Control Coverage:

Engine control module (ECM) diagnostics, sensor testing (e.g., crankshaft position, camshaft position, MAF, O2 sensors), actuator testing (e.g., throttle body, fuel injectors), troubleshooting FSI system specific issues.

Fuel Service Specifications Coverage:

Fuel pump pressure testing, fuel injector testing and cleaning, fuel filter replacement procedures, fuel tank removal and installation, specifications for fuel pressure and flow rates.

Emission Control Coverage:

Catalytic converter diagnosis, exhaust gas recirculation (EGR) system operation and testing, secondary air injection system service, evaporative emission control (EVAP) system testing and component replacement.

Cooling System Coverage:

Radiator and cooling fan service, thermostat replacement, water pump diagnosis and replacement, coolant leak testing, flushing and refilling procedures, system pressure testing.

Lube Coverage:

Oil filter replacement, oil pan removal and gasket replacement, lubrication points and schedules, oil pressure testing.

Ignition Starting Charging Coverage:

Ignition coil and spark plug replacement, ignition timing adjustment (if applicable), starter motor testing and replacement, alternator testing and replacement, battery testing and replacement, charging system circuit diagnostics.

Auto Transmission Clutch Coverage:

Tiptronic and Multitronic transmission fluid and filter changes, torque converter service, transmission control module (TCM) diagnostics, shift solenoid testing, valve body inspection and repair, mechatronics unit service.

Manual Transmission Coverage:

Clutch disc, pressure plate, and release bearing replacement, manual gearbox fluid changes, shift linkage adjustment, transmission removal and installation.

Transfer Propeller Shaft Coverage:

Driveshaft U-joint inspection and replacement, CV joint boot inspection and replacement, driveshaft balancing and repair procedures.

Drive Shaft Coverage:

Inspection of CV joints, seals, and boots. Replacement of damaged or worn driveshafts and axles.

Differential Coverage:

Differential fluid level checks and changes, inspection of seals and bearings, potential differential assembly service (if applicable).

Axle Suspension Coverage:

Wheel bearing replacement, control arm bushing service, ball joint inspection and replacement, shock absorber and strut replacement, spring replacement, wheel alignment procedures and specifications.

Tire Wheel Coverage:

Tire pressure monitoring system (TPMS) service and calibration, wheel balancing, tire rotation, lug nut torque specifications, wheel bolt pattern (e.g., 5x112).

Brake Control Coverage:

ABS hydraulic unit testing and bleeding, brake light switch testing, brake pedal travel and free play adjustment.

Brake Coverage:

Brake pad and rotor replacement, brake caliper service and replacement, brake fluid bleeding procedures, brake line inspection and repair, rear drum brake adjustment (if applicable).

Parking Brake Coverage:

Parking brake cable adjustment, parking brake shoe replacement (if applicable), electronic parking brake (EPB) system diagnostics and service.

Steering Column Coverage:

Steering wheel removal and installation, airbag module service and safety precautions, steering column lock mechanism diagnosis, tilt and telescoping steering column adjustment.

Power Steering Coverage:

Power steering fluid checks and changes, power steering pump replacement, steering rack diagnosis and repair, power steering hose inspection and replacement.

Air Condition Coverage:

Refrigerant system servicing (charging and evacuation), AC compressor replacement, evaporator and condenser service, blower motor diagnosis, climate control module troubleshooting, HVAC system leak detection.

Suppl Restraint System Coverage:

Airbag module diagnostics, crash sensor replacement, airbag control module (SRS control unit) service and calibration, seatbelt pre-tensioner replacement after deployment.

Seat Belt Coverage:

Seatbelt inspection, replacement of damaged or malfunctioning seatbelts, retractor mechanism service.

Engine Immobilizer Coverage:

Immobilizer system diagnosis, key programming procedures, transponder key identification, troubleshooting anti-theft system faults.

Cruise Control Coverage:

Cruise control system diagnostics, actuator testing, switch and stalk replacement, radar sensor calibration (for ACC).

Wiper Washer Coverage:

Wiper motor testing and replacement, wiper arm replacement, washer fluid pump and nozzle service, wiper switch and relay diagnosis.

Door Lock Coverage:

Central locking system diagnosis, door lock actuator replacement, remote key fob battery replacement and programming, door handle and latch service.

Meter Audio Visual Coverage:

Instrument cluster diagnostics and repair, speedometer, tachometer, and gauge servicing, audio system troubleshooting, speaker replacement, antenna system service.

Horn Coverage:

Horn operation diagnosis, horn button and relay testing, horn replacement.

Windshield Glass Mirror Coverage:

Windshield replacement procedures, sealant application, power mirror adjustment and heating element service, mirror glass replacement.

Instrument Panel Coverage:

Instrument cluster removal and installation, dashboard illumination and warning light troubleshooting, gauge cluster diagnostics.

Seat Coverage:

Seat adjustment mechanism repair, power seat motor replacement, seat heating element service, seat upholstery repair or replacement.

Engine Hood Door Coverage:

Hood and door hinge adjustment and lubrication, latch and lock mechanism service, door alignment procedures, trunk lid and sunroof service.

Exterior Interior Coverage:

Body panel alignment, trim piece replacement, bumper repair and replacement, interior trim panel removal and installation, carpet and headliner service.

Electrical Coverage:

Detailed wiring diagrams for all electrical systems, fuse box location and identification, relay testing, power distribution diagnostics, component testing using multimeters and oscilloscopes.

Multiplex Can Communication Coverage:

CAN bus network diagnostics, gateway module troubleshooting, data stream analysis for various control modules (e.g., ABS, ECU, comfort systems), troubleshooting communication error codes.

Procedures Included:

Routine maintenance, troubleshooting diagnostics, component removal and installation, repair procedures, assembly instructions, technical specifications, wiring diagrams, exploded views, fluid capacities and types, torque specifications, diagnostic trouble codes (DTCs) and their solutions.

Troubleshooting Diagnostics:

Systematic approach to diagnosing faults, including symptom identification, cause analysis, and step-by-step troubleshooting trees based on diagnostic trouble codes (DTCs) and live data from the vehicle's onboard diagnostics (OBD-II).

Repair Procedures:

Detailed, illustrated instructions for the repair or replacement of virtually every component, from minor adjustments to major overhauls.

Technical Specifications:

Provides all necessary torque values, electrical specifications, fluid capacities, tolerances, and diagnostic parameters required for accurate repair and maintenance.

Wiring Diagrams:

Comprehensive electrical schematics for all vehicle systems, including power distribution, component connections, and wire colors, vital for electrical troubleshooting.

Technical Depth:

High. Designed for professional technicians and advanced DIY enthusiasts, covering in-depth mechanical, electrical, and diagnostic procedures.

📊 Manual Specifications

File Format:

PDF

Print Quality:

Printable. High-resolution digital format allowing for clear printing of all pages.

Binding Type:

N/A (Digital Download)

Paper Type:

N/A (Digital Format)

⚙️ Engine Specifications

Engine Variants Covered:

Likely includes 3.2L FSI V6 (BKH engine code) and 4.2L FSI V8 (BNH engine code). Potential inclusion of 2.4L V6 (BDW) and 3.0L V6 (ASN) for certain markets.

3.2L Fsi V6 Power:

Approx. 255 hp @ 6500 rpm

3.2L Fsi V6 Torque:

Approx. 243 lb-ft @ 3250 rpm

4.2L Fsi V8 Power:

Approx. 335 hp @ 6800 rpm

4.2L Fsi V8 Torque:

Approx. 317 lb-ft @ 3500 rpm

Fuel System Type:

Fuel Stratified Injection (FSI) for V6 and V8 engines, Electronic Fuel Injection (EFI) for others.

🔧 Transmission

Standard Transmission:

Likely the 6-speed Tiptronic automatic transmission (09L) as standard on many models. Manual transmission (01E 6-speed) available on some variants.

Optional Transmission:

Multitronic CVT (01J) available on front-wheel-drive models. Continuously Variable Transmission with simulated gear shifts and Tiptronic function.

Transmission Features:

Quattro permanent all-wheel drive system, Tiptronic for manual shifting, Sport mode for more aggressive gear selection.

📐 Dimensions

Length:

Approx. 4916 mm (193.5 in)

Width:

Approx. 1855 mm (73.0 in)

Height:

Approx. 1459 mm (57.4 in)

Wheelbase:

Approx. 2843 mm (112.0 in)

Curb Weight Kg:

Varies by engine and drivetrain, typically 1600-1800 kg (3527-3968 lbs).

🛡️ Safety Features

NHTSA Front Impact:

5-star (driver and front passenger)

IIHS Side Impact:

Good

Active Features:

Anti-lock Braking System (ABS), Electronic Stability Control (ESC), Traction Control System (ASR), Electronic Brake-force Distribution (EBD), Brake Assist (BA).

Passive Features:

Front airbags, front side airbags, full-length side curtain airbags, active front head restraints, three-point seatbelts with pre-tensioners.

💡 Technology Features

Infotainment System:

MMI (Multi Media Interface) system with options for navigation, radio, CD changer, and telephone integration.

Driver Assistance Features:

Optional Adaptive Cruise Control (ACC), Parking sensors (front and rear), Rain-sensing wipers, Auto-dimming rearview mirror.

Connectivity Options:

Bluetooth mobile phone preparation, optional SiriusXM satellite radio.

🔧 Maintenance

Oil Change Interval:

Typically every 10,000 miles or 12 months, whichever comes first. May vary with 'long-life' synthetic oils and driving conditions.

Spark Plug Replacement:

For FSI engines, usually around 40,000-60,000 miles. For older ignition systems, potentially longer.

Timing Belt Replacement:

Audi A6 models from 2005 typically use timing chains for V6 and V8 engines, eliminating the need for periodic belt replacement. Certain engine variants might still utilize a belt.

Engine Oil Type:

Synthetic, e.g., SAE 5W-40 or 0W-40, meeting VW 502 00 / 505 00 specifications.

Transmission Fluid Type Atf:

For Tiptronic (09L): G 055 025. For Multitronic (01J): G 052 162.

Coolant Type:

G12 Plus (or G12++) ethylene glycol-based coolant, typically purple or pink.

Known Issues:

PCV valve failures leading to oil leaks and rough idle, ignition coil failures, alternator issues, oil consumption on some FSI engines, power steering pump leaks, door lock module failures (especially on rear doors), MMI system glitches, and potential water pump failures.

📚 Vehicle History

Brand Heritage:

Audi, a German automotive manufacturer with a rich history dating back to the early 20th century, is renowned for its engineering prowess, innovative technology, and design excellence, particularly in the luxury segment.

Model Evolution:

The 2005 Audi A6 marked the introduction of the third generation (C6 platform), replacing the C5. It featured a significant redesign, including the distinctive 'single-frame' grille that would become a hallmark of Audi design, and introduced advanced technologies like the MMI (Multi Media Interface).

Production Years:

The C6 generation A6 was produced from 2004 to 2011. The 2005 model year is part of this generation.

Manufacturing Locations:

Primary manufacturing for the C6 A6 was in Germany (Neckarsulm) and also in China for the local market.