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            Manual Coverage
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            Systems Covered
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            Engine Mechanical:
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            Engine assembly, disassembly, lubrication, cooling, fuel, ignition, exhaust, timing, and component diagnostics.
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            Engine Electrical:
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            Engine control unit (ECU), sensors, actuators, wiring harnesses, starting and charging systems.
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            Emission Control:
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            Catalytic converter system, evaporative emission control (EVAP), secondary air injection, and emissions testing procedures.
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            Fuel System:
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            Fuel injection system (Bosch Motronic), fuel pump, injectors, fuel pressure regulator, and fuel tank/lines.
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            Clutch System:
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            Clutch operation, hydraulic system, clutch disc, pressure plate, and release bearing.
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            Manual Transaxle:
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            Gearbox overhaul, shift mechanisms, differential, and lubrication.
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            Automatic Transaxle:
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            Note: The RS2 Avant was exclusively offered with a manual transmission. This section likely covers related drivetrain components or general automatic transmission principles if present in the underlying documentation.
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            Driveshaft Axle:
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            Front and rear driveshafts, constant velocity (CV) joints, wheel bearings, and differential components.
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            Suspension System:
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            Front and rear suspension geometry, shock absorbers, springs, control arms, bushings, and alignment procedures.
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            Steering System:
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            Power steering system, steering rack, tie rods, steering column, and wheel alignment.
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            Restraint System:
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            Seatbelts, airbag system (SRS) diagnostics and replacement, and structural safety components.
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            Brake System:
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            Brake fluid, master cylinder, brake boosters, ABS system, front and rear brake calipers, rotors, pads, and parking brake.
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            Body Interior Exterior:
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            Body panel repair, door mechanisms, glass, interior trim, seating, roof rack mounting, and exterior components.
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            Body Electrical System:
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            Lighting systems (headlights, taillights, interior), wipers, horn, central locking, power windows, mirrors, and instrumentation.
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            HVAC System:
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            Heating, ventilation, air conditioning (HVAC) system components, refrigerant, compressor, blower motor, and climate control operation.
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            Procedures Included
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            Maintenance Procedures:
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            Routine maintenance tasks such as oil changes, filter replacements, spark plug changes, fluid checks and top-offs, brake inspections.
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            Diagnostic Procedures:
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            Step-by-step troubleshooting guides for common and complex issues, diagnostic trouble codes (DTCs) interpretation, electrical system diagnostics.
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            Repair Procedures:
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            Detailed instructions for component removal, installation, overhaul, and adjustment for all major vehicle systems.
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            Wiring Schematics:
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            Complete and detailed wiring diagrams for all electrical systems, including component location and circuit tracing.
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            Technical Specifications:
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            Precise technical data, torque specifications, clearances, tolerances, and diagnostic values.
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            Technical Depth
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            Depth:
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            Full workshop level, suitable for both professional mechanics and advanced DIY enthusiasts. Covers everything from basic maintenance to complete engine and transmission rebuilds.
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            Maintenance
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            Service Intervals
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            Oil Change Interval:
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            Typically 7,500 to 10,000 miles (12,000 to 15,000 km) or 12 months, whichever comes first. Consult manual for exact Audi recommendations.
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            Timing Belt Interval:
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            Crucial interval, typically 40,000 to 60,000 miles (60,000 to 90,000 km). Failure can cause catastrophic engine damage. Manual will specify exact interval and procedure.
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            Fluid Specifications
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            Engine Oil Type:
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            Fully Synthetic 5W-40 or 10W-40 (API SG/SH or ACEA A2/A3). Manual will list precise specification.
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            Coolant Type:
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            G12 or equivalent ethylene glycol-based coolant with corrosion inhibitors. Manual specifies concentration.
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            Brake Fluid Type:
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            DOT 4 or DOT 5.1. Manual specifies precise type and change interval.
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            Manual Transmission Fluid Type:
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            GL-4 or GL-5 gear oil. Manual will specify viscosity and specification.
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            Known Issues
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            Common Wear Items:
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            Suspension bushings, CV boots, aging electrical connectors, turbocharger seals, ignition components (coils, spark plug wires).
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            Specific Concerns:
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            Vacuum leaks can affect performance. Turbocharger maintenance and oil feed lines are critical. Early models may have had specific ECU tuning quirks addressed by Audi.
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