Target Audience:
Professional automotive technicians and experienced car owners seeking detailed repair information.
Advantage:
Provides complete, factory-level information comparable to professional workshop manuals.
Visual Aids:
Detailed illustrations, drawings, and photos with enlarged insets for clarity.
Usability:
Numbered table of contents for quick information retrieval.
Engine Mechanical:
Complete engine repair, overhaul, timing belt, cylinder head, pistons, crankshaft, lubrication system.
Engine Management:
Fuel system, ignition system, emissions control, engine control unit (ECU) diagnostics.
Drivetrain:
Manual and Automatic Transmissions, Clutch, Driveline components (CV joints, driveshafts), Differential.
Suspension:
Front and Rear Suspension, Shock Absorbers, Springs, Control Arms, Bushings, Wheel Alignment.
Brakes:
Front and Rear Brake Systems (Discs/Drums), ABS (Anti-lock Braking System), Hydraulic lines, Master Cylinder, Calipers.
Steering:
Power Steering System, Steering Rack, Tie Rods, Steering Column.
Body And Frame:
Body structure, Frame, Mounting points, Exterior panels, Doors, Hood, Tailgate.
Electrical System:
Wiring diagrams, Fuses, Relays, Lighting system, Battery and Charging system, Starter, Alternator.
Climate Control:
HVAC system, Air Conditioning, Heater Core, Blower Motor, Controls.
Instrumentation And Warnings:
Dashboard instruments, Warning lights, Trip computer, Diagnostic trouble codes (DTCs).
Audio System:
Factory radio, Speakers, Antenna.
Maintenance:
Scheduled maintenance, Oil changes, Filter replacements, Fluid checks and changes, Tune-ups.
Repair:
Step-by-step repair procedures for all major mechanical and electrical components.
Troubleshooting:
Systematic diagnostic procedures and troubleshooting guides for common problems.
Electrical Diagnostics:
Detailed wiring diagrams, component testing, and troubleshooting for electrical faults.
Depth:
Comprehensive, suitable for professional technicians and advanced DIYers.
Detail Level:
Detailed substeps, numbered instructions, critical notes, cautions, and warnings.
Common Engines B5 A4 Avant:
1.6L (ADP, AHL), 1.8L (AJP, APU, ARK, AWL, ARM), 1.8L Turbo (AEB, APU, ARK, AWT, AVC, AVJ, AMB), 2.4L V6 (AGA, ALF, AML, APS, ARJ), 2.6L V6 (ABC), 2.8L V6 (AAH, ACK, APR, AMX, ATX, BBG), 1.9L TDI Diesel (AHH, AJM, AHF, ASV, AVG).
Horsepower Range:
Approx. 100 hp (1.6L) to 265 hp (2.7T Quattro Sport).
Torque Range:
Approx. 140 Nm (1.6L) to 370 Nm (2.7T Quattro Sport).
Injection Type:
Multi-point fuel injection (MPI) or Electronic Fuel Injection (EFI) for gasoline engines; Direct Injection for TDI.
Recommended Fuel:
Unleaded gasoline (RON 95/98 depending on engine) for gasoline engines; Diesel fuel for TDI engines.
Length:
Approx. 4517 mm (177.8 in)
Width:
Approx. 1733 mm (68.2 in)
Height:
Approx. 1420 mm (55.9 in)
Cargo Volume Rear Seats Up:
Approx. 450 liters (15.9 cu ft)
Cargo Volume Rear Seats Down:
Approx. 1400 liters (49.4 cu ft)
Curb Weight:
Approx. 1380 kg (3042 lbs) to 1650 kg (3638 lbs) depending on engine and drivetrain.
NHTSA Ratings:
Mixed ratings due to era; generally performed well for its time, but specific ratings vary by test year and configuration.
ABS:
Standard Anti-lock Braking System.
Traction Control:
Optional Electronic Stability Program (ESP) or Traction Control (ASR) on some models.
Airbags:
Front airbags standard; optional side airbags available.
Seatbelts:
3-point inertia-reel seatbelts with front belt tensioners.
Oil Change Interval:
Typically 15,000 km (9,375 miles) or 12 months, whichever comes first, using synthetic oil. Always consult manual for specific engine.
Timing Belt Replacement:
Crucial for non-interference engines like many 1.8L and 2.4/2.8 V6. Interval typically 90,000 - 120,000 km (56,000 - 75,000 miles). Consult manual for specific engine. Interference engines require immediate replacement if broken.
Engine Oil:
API SJ/SL or ACEA A3/B3/B4 certified. Viscosity typically 5W-40 or 10W-40 (check manual for climate and engine specific recommendations).
Coolant:
G12 or G12+ (Purple/Pink) ethylene glycol coolant mixed with distilled water (50/50).
Transmission Fluid Manual:
API GL-4 or GL-5. Specific SAE viscosity depends on temperature and transmission (e.g., G 052 171 A2 or similar).
Transmission Fluid Automatic:
Audi's proprietary ATF fluid (e.g., G 052 162 A2 or similar). Non-serviceable in some older transmissions, but often recommended for flush/replacement to prolong life.
Common Problems:
Coil pack failure (especially older 1.8T), ABS sensor failure, CV joint wear, coolant flange leaks, vacuum hose degradation, window regulator failure, mass airflow sensor issues, oil sludge buildup (especially on early 1.8T if maintenance is neglected).
Audi Legacy:
Audi has a long history of engineering excellence, particularly known for its Quattro all-wheel-drive system and sophisticated engineering.
A4 B5 Introduction:
The A4 B5 replaced the Audi 80/90 and was a significant redesign, marking a new design language for Audi, influenced by the successful A8 D2.
B5 Facelift:
A significant facelift occurred for the 2001 model year (often referred to as 'facelift' or B5.5), with updated front and rear styling, including clear headlights and revised interior trim.
Manufacturing Location:
Primarily Ingolstadt, Germany.
