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Introduction
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Market Position
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Vehicle Segment:
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Compact Executive Car (Premium)
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Target Audience:
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Audi A4 owners seeking self-maintenance, independent repair shops, automotive enthusiasts
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Competitive Analysis
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Competitors:
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BMW 3 Series, Mercedes-Benz C-Class, Lexus IS, Acura TL
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Key Features
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Manual Advantage:
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Official licensing ensures accuracy and completeness, digital format offers quick access and searchability over traditional print.
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Software Benefits:
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Interactive diagrams, detailed troubleshooting trees, often includes diagnostic trouble code (DTC) explanations.
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Manual Coverage
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Systems Covered
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Powertrain:
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Engine mechanical, fuel system, ignition system, emissions control, cooling system, exhaust system
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Drivetrain:
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Manual Transmission (01X/02X series), Automatic Transmission (09G/09L/09G/0BW), Quattro All-Wheel Drive System
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Chassis:
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Suspension (front/rear), steering system, brake system (hydraulic, ABS, ESP)
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Electrical:
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12V electrical system, battery, charging system, starting system, lighting, instrument cluster, infotainment, comfort modules, CAN bus network, diagnostic codes (OBD-II)
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Body:
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Body structure, exterior panels, interior trim, climate control (HVAC), safety systems (airbags, seatbelts), doors, windows, locks
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Procedures Included
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Maintenance:
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Scheduled maintenance, oil changes, filter replacements, fluid checks and top-offs, brake inspections
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Repair:
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Component removal and installation, diagnostics, troubleshooting, component testing, wiring diagrams, technical service bulletins (TSBs)
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Diagnostics:
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Fault code reading and interpretation, sensor testing, circuit diagnostics, system performance testing
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Technical Depth
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Depth:
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Expert level, suitable for professional technicians and advanced DIY enthusiasts
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Information Detail:
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Detailed step-by-step instructions, torque specifications, special tool requirements, diagnostic strategies, schematics
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Engine Specifications
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Primary Engine
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Engine Code:
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Multiple, common include BGB (2.0 TFSI), BPJ (2.0 TFSI), ALT (1.8T - early B7), AXX (2.0 TFSI), BUL (3.0 V6), BMX (3.2 V6)
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Displacement Popular:
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2.0 Liters (TFSI - Turbocharged Fuel Stratified Injection)
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Performance
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Horsepower 2.0 Tfsi:
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200 hp @ 5100-6000 rpm
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Torque 2.0 Tfsi:
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207 lb-ft @ 1800-4000 rpm
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Horsepower 3.2 V6:
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252 hp @ 6500 rpm
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Torque 3.2 V6:
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243 lb-ft @ 3250 rpm
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Fuel System
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Fuel Delivery:
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Electronic Fuel Injection (EFI), Direct Injection (TFSI models)
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Fuel Type:
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Premium Unleaded Gasoline (91 octane or higher recommended)
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Engine Management
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ECM Type:
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Bosch Motronic (various versions depending on engine)
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Timing Belt Chain:
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Timing Chain (for 2.0 TFSI and 3.0/3.2 V6)
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Transmission
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Standard
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Transmission Type Base:
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6-Speed Manual (01X/02X)
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Optional
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Transmission Type Optional:
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6-Speed Tiptronic Automatic (09G/09L) or Multitronic CVT (early models)
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Features
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Drivetrain Options:
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Front-Wheel Drive (FWD), quattro All-Wheel Drive (AWD)
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Fluid Specifications
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Automatic Transmission Fluid:
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G 052 162 A2 (or equivalent per VIN)
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Manual Transmission Fluid:
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G 052 171 A2 (or equivalent per VIN)
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Quattro Differential Fluid:
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G 052 145 A1 (or equivalent per VIN)
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Dimensions
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Exterior
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Length:
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Sedan: 178.5 in (4535 mm), Avant: 179.1 in (4550 mm), Cabriolet: 178.9 in (4545 mm)
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Width:
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707.0 in (1796 mm)
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Height:
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Sedan/Avant: 55.7 in (1415 mm), Cabriolet: 54.5 in (1384 mm)
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Weights
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Curb Weight Base:
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Approx. 3300-3600 lbs (1500-1630 kg) depending on configuration
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Gross Vehicle Weight Rating:
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Varies by model and configuration, consult VIN specific data
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Cargo
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Trunk Volume Sedan:
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12.4 cu ft (351 L)
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Cargo Volume Avant:
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18.4 cu ft (520 L) behind rear seats, expandable
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Safety Features
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Ratings
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NHTSA Front Impact:
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5-Star (2006 model year ratings)
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IIHS Side Impact:
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Good (2006 model year ratings)
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IIHS Rear Impact:
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Good (2006 model year ratings)
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Active Features
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Stability Control:
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Electronic Stability Program (ESP) standard
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Braking System:
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Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD), Brake Assist (BA)
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Passive Features
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Airbags:
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Front airbags, front side airbags, optional side curtain airbags (Sedan/Avant), rollover protection (Cabriolet)
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Seatbelts:
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3-point inertia-reel seatbelts with pre-tensioners and force limiters
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Maintenance
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Service Intervals
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Oil Change Interval:
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Every 5,000-10,000 miles (8,000-16,000 km) or 1 year, depending on driving conditions and oil used. Check Owner's Manual.
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Air Filter Replacement:
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Every 20,000-30,000 miles (32,000-48,000 km)
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Cabin Filter Replacement:
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Every 15,000-20,000 miles (24,000-32,000 km) or annually
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Spark Plug Replacement 2.0 Tfsi:
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Every 30,000-60,000 miles (48,000-96,000 km), depending on plug type and driving.
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Timing Chain Inspection:
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Inspect at 60,000 miles (96,000 km), replace as needed based on inspection. Known for potential wear/tensioner issues.
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Fluid Specifications
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Engine Oil Spec:
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SAE 5W-40 or 5W-30, meeting VW 502 00 / 505 00 or VW 504 00 / 507 00 specifications.
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Coolant Spec:
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G 12 Plus or G 12 EV (Pink Antifreeze/Coolant)
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Brake Fluid Spec:
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DOT 4 (or higher specification as per manual)
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Known Issues
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Ignition Coils:
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Prevalent failure on 2.0 TFSI engines, leading to misfires.
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Pcv Valve:
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Failure can lead to oil leaks, rough idle, and increased oil consumption.
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Oil Consumption:
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Some 2.0 TFSI engines can consume oil, especially if not maintained properly or due to piston ring issues on certain production runs.
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Timing Chain Tensioner:
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Wear and failure can cause rattling noises and potential timing jumps, particularly on early 2.0 TFSI engines.
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Water Pump:
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Failure can lead to coolant leaks and overheating. Often replaced with timing chain service.
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HVAC Blower Motor Resistor:
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Can fail, causing the blower fan to only work on certain speed settings.
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Vehicle History
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Brand Heritage
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Audi Legacy:
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Founded in 1910, Audi is known for its engineering prowess, 'Vorsprung durch Technik' slogan, and quattro all-wheel-drive technology.
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Model Evolution
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A4 Lineage:
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The A4 replaced the Audi 80/90 in 1994. The 2006 model is part of the B7 generation, a significant refresh of the B6 platform, introduced in late 2004/early 2005.
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B7 Introduction:
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The B7 platform brought revised styling (singleframe grille), updated suspension tuning, and new powertrain options.
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Production
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Manufacturing Location:
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Ingolstadt, Germany; Brussels, Belgium
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Production Years B7:
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2004/2005 - 2008
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