Segment:
Compact Executive Sports Sedan/Avant/Cabriolet
Target Audience:
Enthusiasts, DIY mechanics, and professional workshops servicing Audi S4 vehicles.
Competitors:
BMW M3 (E46), Mercedes-Benz C32 AMG (W203), Subaru Impreza WRX STI, Mitsubishi Lancer Evolution.
Vehicle Appeal:
Performance-oriented variant of the Audi A4, known for its potent V6 twin-turbo engine, quattro all-wheel drive, and sophisticated chassis.
Manual Value Proposition:
Empowers owners to perform complex repairs and routine maintenance, saving significant costs associated with dealership servicing.
Accessibility:
Digital format allows for instant access on various devices (PC, Mac, tablet, smartphone).
Engine:
2.7L Bi-Turbo V6 (250hp/258lb-ft), including cooling, lubrication, fuel delivery, ignition, emission control, timing, and diagnosis.
Transmission:
6-speed manual and Tiptronic automatic transmissions, including clutch, drivetrain, driveshafts, differentials, and related systems.
Suspension And Steering:
Front and rear suspension (multi-link), shock absorbers, springs, anti-roll bars, power steering system, steering rack, and alignment.
Brakes:
Front and rear disc brakes, ABS (Anti-lock Braking System), EBD (Electronic Brake-force Distribution), brake calipers, rotors, pads, hydraulic lines, and parking brake.
Electrical System:
12V battery, alternator, starter motor, lighting (headlights, taillights, interior), fuses, relays, wiring diagrams, and diagnostic connectors (OBD-II).
Body And Chassis:
Body panel removal/installation, doors, hood, trunk, bumpers, interior trim, sound deadening, and chassis components.
Climate Control:
HVAC system, A/C compressor, refrigerant, heater core, blower motor, and climate control unit.
Safety Systems:
Airbag system, seat belts, and related safety components.
Scheduled Maintenance:
Oil changes, filter replacements, fluid checks and changes, spark plug replacement, brake fluid flush, coolant flush, and belt inspections/replacements.
Troubleshooting Diagnostics:
Step-by-step diagnostic procedures for common and uncommon issues, symptom-based troubleshooting, reading diagnostic trouble codes (DTCs).
Repair Procedures:
Detailed instructions for component removal, repair, and reinstallation across all covered systems.
Engine Repair:
Engine rebuilds, head gasket replacement, turbocharger service, fuel injector replacement, and more.
Transmission Service:
Clutch replacement, transmission fluid and filter changes, torque converter replacement, and internal transmission component repairs.
Brake System Repair:
Brake pad and rotor replacement, caliper rebuilding, ABS sensor replacement, and brake line bleeding.
Electrical Troubleshooting:
Component testing, circuit diagnosis using wiring diagrams, and common electrical fault rectification.
Suspension And Steering Repair:
Ball joint replacement, control arm replacement, tie rod end replacement, and steering column repair.
Depth:
Comprehensive, covering everything from basic maintenance to complete engine and transmission overhauls.
Diagrams And Illustrations:
Includes detailed diagrams, exploded views, and step-by-step illustrations for clarity.
Torque Specifications:
Detailed torque values for critical fasteners across all systems.
Wiring Diagrams:
Full electrical system wiring diagrams for accurate troubleshooting.
Oil And Filter Change:
Every 10,000 miles or 12 months, whichever comes first (under normal driving conditions; severe conditions require more frequent changes).
Spark Plugs:
Typically around 60,000 miles (refer to manual for exact specification based on plug type).
Timing Belt Or Chain:
This engine uses a timing chain, which is designed to last the life of the engine but may require inspection and potential replacement if noise or issues arise. The manual will detail inspection procedures.
Brake Fluid Flush:
Every 2 years, regardless of mileage.
Coolant Flush:
Every 30,000-60,000 miles or as specified in the manual, using G 12 or G 12+ coolant.
Coolant:
G 12 or G 12+ (Audi Pink/Red Antifreeze)
Brake Fluid:
DOT 4 (meeting VW 501 14 specification)
Coil Packs:
Intermittent misfires can be caused by failing ignition coil packs.
Pcv System:
Positive Crankcase Ventilation (PCV) system can clog, leading to vacuum leaks and rough running.
Oil Leaks:
Common oil leak points include valve cover gaskets and oil cooler seals.
Front Control Arms:
Wear in front upper and lower control arms can lead to steering looseness and uneven tire wear.
Cv Boots:
Torn CV joint boots can lead to grease loss and eventual CV joint failure.
