Manual Coverage
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Systems Covered
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Engine Systems:
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Engine mechanical (cylinder head, block, pistons, crankshaft), lubrication, cooling, fuel injection, ignition, emissions control, turbocharging (where applicable).
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Transmission Systems:
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Manual transmission (gearbox, clutch, linkage), Automatic transmission (torque converter, valve body, internal components, control systems).
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Drivetrain Systems:
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Front-wheel drive, all-wheel drive (4MOTION), CV joints, driveshafts, differential.
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Suspension Steering Systems:
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Front and rear suspension components (struts, shocks, control arms, bushings, springs), steering rack, power steering system, alignment specifications.
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Brake Systems:
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Front and rear disc brakes, ABS system (modulator, sensors, control module), brake fluid, parking brake.
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Electrical Systems:
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Battery, charging system, starting system, lighting (headlights, taillights, interior), fuses, relays, wiring diagrams, body control module (BCM), comfort electronics.
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HVAC Systems:
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Heating, ventilation, and air conditioning (AC compressor, refrigerant, evaporator, condenser, blower motor, controls).
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Body Interior Exterior:
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Body panel removal and installation, interior trim, seats, airbags, glass, doors, locks, bumpers, exterior trim, paint codes.
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Procedures Included
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Maintenance Procedures:
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Oil changes, filter replacements (oil, air, fuel, cabin), spark plug replacement, coolant flush, brake fluid flush, belt inspection/replacement, tune-ups.
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Repair Procedures:
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Engine rebuilds, transmission overhaul, suspension component replacement, brake caliper/rotor replacement, electrical component diagnosis and replacement, AC system service.
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Troubleshooting Diagnostics:
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Diagnostic trouble codes (DTCs), symptom-based troubleshooting guides, component testing procedures, electrical schematics for fault finding.
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Special Procedures:
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Timing belt replacement, fuel system bleeding, airbag system service, ECU/module coding and adaptation, diagnostic tool usage.
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Technical Depth
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Depth Of Coverage:
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Complete disassembly and reassembly, detailed torque specifications, special tool requirements, component tolerances, diagnostic flowcharts.
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Engine Specifications
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Primary Engine Options
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Gasoline Engines:
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1.4L (AEX, APQ), 1.6L (AEH, AKL, APF, AUR), 1.8L (AGN, AGU, ARZ, AUM, AUQ, APY, AQC), 2.0L (AZJ, AWX, AVU, BCB), 2.3L V5 (AGZ, AQN), 2.8L VR6 (AAA, AQP, AQQ, BDE).
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Diesel Engines:
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1.9L TDI (AGR, ALH, AHF, ASV, AJM, AUY, BXE, BKC, BJB, BLS), 1.9L SDI (AQM, AGD).
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Performance
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Horsepower Range:
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Approximately 60 hp (1.4L) to 204 hp (2.8L VR6).
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Torque Range:
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Approximately 115 Nm (1.4L) to 270 Nm (2.8L VR6).
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Fuel System
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Fuel Delivery:
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Electronic Multi-Point Fuel Injection (MPI) or Direct Injection (TDI, FSI on later models not specified here).
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Fuel Type:
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Unleaded gasoline (RON 91-98 depending on engine), Diesel (Euro 3/4 standards).
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Engine Codes Explained
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Engine Code Examples:
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AGU (1.8T 150hp), ALH (1.9 TDI 90hp), AGZ (2.3 V5 150hp).
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Maintenance
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Service Intervals
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Oil Change Interval:
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Typically 15,000 km or 1 year (whichever comes first), or 30,000 km / 2 years with LongLife service intervals, depending on oil specification and driving conditions.
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Timing Belt Interval:
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Varies significantly by engine. For most belt-driven engines (e.g., 1.6L, 1.8T, 1.9 TDI), typically every 90,000-120,000 km or 5-7 years. Chain-driven engines (V5, VR6) require less frequent major service but may need tensioner checks.
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Fluid Specifications
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Engine Oil:
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API SN/SP or ACEA C3/C4/C5, viscosity 5W-40 or 5W-30 (depending on engine and VW specification like VW 502 00, VW 504 00, VW 505 00, VW 507 00). Refer to manual for exact spec.
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Coolant:
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G12 or G12+ (Pink/Red) ethylene glycol based coolant, mixed 50/50 with distilled water.
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Brake Fluid:
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DOT 4 (DOT 5.1 may be specified for certain ABS systems).
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Transmission Fluid Manual:
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GL-4 or GL-4/5 gear oil, SAE 75W-90 or 75W-80.
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Transmission Fluid Automatic:
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VW G 052 162 (or equivalent ATF like Dexron III for older units). Critical to use correct fluid.
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Known Issues
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Common Problems:
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Coil pack failure (1.8T), Mass Air Flow (MAF) sensor issues (1.8T, TDI), ABS sensor failure, window regulator failure, door lock actuator issues, minor oil leaks from valve cover/oil pan, catalytic converter failure (especially on earlier models), catalytic converter failure on early models, glow plug issues (TDI).
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