Engine Mechanical:
Full engine overhaul, internal component specifications, timing belt/chain service, cooling system, lubrication system
Engine Electrical:
Ignition system, fuel injection system (ECU diagnostics, sensors, injectors), starting and charging system, emissions control systems
Transmission Manual:
Clutch system, gearbox disassembly/assembly, shift mechanism, lubrication
Transmission Automatic:
Transmission control module, torque converter, valve body, internal components, fluid service, electronic diagnostics
Drivetrain:
Front-wheel drive (FWD), Quattro all-wheel drive system (if applicable), drive shafts, CV joints, differentials
Suspension:
Front McPherson struts, rear torsion beam or multi-link (depending on market), springs, shock absorbers, control arms, wheel bearings
Steering:
Power steering system, steering rack, tie rods, steering column, alignment specifications
Brakes:
Front and rear disc brakes, ABS (Anti-lock Braking System), EBD (Electronic Brake-force Distribution), brake fluid specifications, service procedures
Electrical System:
Battery, alternator, starter, lighting systems, fuses, relays, wiring diagrams, body control module (BCM) functions
Climate Control:
HVAC system, A/C compressor, refrigerant service, heater core, blower motor, climate control module
Body And Interior:
Body panel removal/installation, door mechanisms, interior trim, seats, airbags, power windows/locks
Body And Paint:
Corrosion protection, paint codes, touch-up procedures, minor body repairs
Maintenance Schedule:
Detailed scheduled maintenance intervals for oil changes, filter replacements, fluid checks, inspections
Troubleshooting:
Diagnostic procedures for common issues, symptom-based troubleshooting guides, fault code interpretations
Repair Procedures:
Step-by-step instructions for all major component repairs and replacements
Disassembly Assembly:
Detailed instructions for removing and installing components with torque specifications
Diagnostics:
Procedures for using diagnostic tools, understanding sensor data, and interpreting fault codes
Technical Specifications:
Comprehensive list of all mechanical and electrical specifications, tolerances, and capacities
Depth:
Factory-level detail suitable for professional technicians and advanced DIY enthusiasts
Oil Change Interval Typical:
15,000 km (9,300 miles) or 12 months, whichever comes first (Variable Service Interval system introduced later)
Timing Belt Replacement 1.8 Engines:
Typically 90,000 - 120,000 km (56,000 - 75,000 miles)
Engine Oil Specification:
API SG/SH or ACEA A2/A3, viscosity typically 5W-40 or 5W-30 (check owner's manual for specific engine)
Coolant Specification:
G12 (purple) ethylene glycol-based coolant
Brake Fluid Specification:
DOT 4
Coil Pack Failure:
Common issue on 1.8T engines, leading to misfires and rough running.
ABS Sensor Failure:
Wheel speed sensors can fail, triggering ABS warning lights.
Window Regulator Failure:
Plastic components in window regulators can break.
Catalytic Converter Issues:
Can become clogged or fail, especially on higher mileage vehicles, affecting performance.
Suspension Components:
Worn control arm bushings and ball joints can lead to knocking noises and poor handling.
Audi Heritage Overview:
Audi, a German manufacturer founded in 1910, is known for its premium vehicles, quattro all-wheel drive technology, and sophisticated engineering.
A3 First Generation Launch:
The Audi A3 (Typ 8L) was launched in 1996 as Audi's entry into the compact premium hatchback segment, based on the Volkswagen Group A4 platform shared with the Golf IV.
Manufacturing Locations:
Ingolstadt, Germany; Brussels, Belgium
