Engine:
Mechanical Engine (detailed diagnostics, repair, overhaul)
Driveline:
Driveline Axle (front and rear differential, driveshafts, CV joints)
Transmission:
Transmission (manual and automatic gearboxes, clutch systems)
Suspension:
Suspension (front and rear suspension components, shock absorbers, springs, bushings)
Steering:
Steering (power steering system, steering rack, tie rods)
Brakes:
Brakes (disc and drum brakes, ABS, ESP, brake hydraulics, parking brake)
Electrical:
Electrical System (battery, alternator, starter, lighting, ignition, sensors)
Lighting:
Lights (headlights, taillights, interior lighting, fog lights, auxiliary lighting)
Restraints:
Restraints (airbag system, seat belts, pre-tensioners)
HVAC:
HVAC (heating, ventilation, air conditioning, climate control)
Body Interior:
Body & Frame - Interior (seats, dashboard, trim panels, carpets)
Body Exterior:
Body & Frame - Exterior (body panels, doors, hood, trunk, convertible top mechanism)
Audio Visual:
Audio, Visual & Telematics (infotainment systems, navigation, audio components)
Accessories:
Accessories & Equipment (factory-installed accessories, optional equipment)
Tires Wheels:
Tire & Wheels (wheel and tire specifications, mounting, balancing)
Wiring Diagrams:
Wiring Diagrams (comprehensive electrical schematics)
Maintenance:
Scheduled maintenance procedures, oil changes, filter replacements, fluid checks
Diagnostics:
Troubleshooting guides, diagnostic fault codes (DTCs), symptom-based diagnostics
Repair:
Step-by-step repair instructions for all major components and systems
Overhaul:
Complete engine and transmission overhaul procedures
Replacement:
Component replacement procedures (e.g., brakes, suspension, sensors)
Calibration:
Calibration procedures for electronic systems (e.g., steering angle sensor)
Convertible Top:
Specific procedures for the convertible top mechanism and operation
Depth:
Comprehensive from basic adjustments to complete unit overhauls
Special Tools:
Identifies and describes necessary special tools for specific repairs
Torque Specifications:
Provides exact torque specifications for all fasteners
Clearances:
Includes critical mechanical clearances and tolerances
Engine Options:
Likely includes 2.0L FSI (Turbocharged Direct Injection), 3.0L V6, and 4.2L V8 FSI (Naturally Aspirated) engines.
Horsepower Range:
Approximately 170 hp (2.0 TFSI) to 350 hp (4.2 FSI)
Torque Range:
Varies by engine, e.g., 200 lb-ft (2.0 TFSI) to 325 lb-ft (4.2 FSI)
Injection Type:
Fuel Stratified Injection (FSI) and Multi-Point Fuel Injection (MPI)
Fuel Type:
Premium Unleaded Gasoline (91 AKI or higher recommended)
ECU System:
Proprietary Audi Engine Control Unit (ECU) with extensive sensor network
Transmission Type Standard:
Likely a 6-speed Manual Transmission (e.g., 01X) for base models.
Transmission Type Optional:
Optional 6-speed Tiptronic Automatic Transmission (e.g., 09L) with paddle shifters.
Drivetrain:
Front-wheel drive (FWD) or Audi's legendary quattro all-wheel drive (AWD)
Clutch:
Hydraulically actuated single-plate dry clutch for manual transmission.
Automatic Transmission Fluid:
G 055 025 (or equivalent specified by Audi)
Manual Transmission Fluid:
G 052 171 A2 (or equivalent specified by Audi)
Length:
Approx. 4574 mm (180.1 in)
Width:
Approx. 1769 mm (69.6 in) without mirrors
Height:
Approx. 1390 mm (54.7 in)
Curb Weight:
Approx. 1700 kg - 1900 kg (3748 lbs - 4189 lbs) depending on engine and drivetrain.
Gross Vehicle Weight Rating:
Varies by model configuration, refer to vehicle VIN plate.
Trunk Volume:
Approx. 310 liters (10.9 cu ft) with the top up.
NHTSA Front Impact:
Likely achieved 4 or 5 stars (specific data may vary).
IIHS Side Impact:
Likely achieved 'Good' ratings (specific data may vary).
Esp:
Electronic Stability Program (ESP) standard on most models.
ABS:
Anti-lock Braking System (ABS) standard.
Traction Control:
Traction Control System (ASR) integrated with ESP.
Airbags:
Front airbags, side airbags, and often side curtain airbags (or head protection system) standard.
Seat Belts:
Three-point inertia-reel seat belts with pre-tensioners and load limiters.
Rollover Protection:
Automatic pop-up rollover protection bars integrated behind the rear seats.
Navigation System:
Optional MMI (Multi Media Interface) navigation system with integrated CD/DVD player.
Audio System:
Bose premium audio system often available, standard Audi concert or symphony radio.
Parking Sensors:
Optional front and rear parking sensors (Audi parking system).
Cruise Control:
Standard cruise control system.
Bluetooth:
Optional Bluetooth mobile phone preparation.
Keyless Entry:
Optional Advanced Key (keyless entry and start).
Oil Change Interval:
Typically every 10,000 miles or 12 months, whichever comes first, using synthetic oil. Consult manual for specific engine/oil type.
Major Service Interval:
Often around 60,000 to 100,000 miles for timing belt (if applicable, some engines used chains), coolant flush, spark plugs, and other critical components.
Engine Oil Specification:
API SN, ACEA C3 or C3/A3/B4, SAE 5W-40 or 0W-40 (e.g., Castrol EDGE Professional Longlife III 5W-30) – verify with manual for specific engine.
Coolant Specification:
G12 Plus (Pink) or G13 (Purple) coolant (Ethylene Glycol based concentrate).
Brake Fluid Specification:
DOT 4 Class 6 (VW 501 14) or equivalent.
Common Problems:
Leaking PCV (Positive Crankcase Ventilation) system, ignition coil failures, oil consumption in some engines, convertible top hydraulic system issues, water pump failures, control arm bushing wear.
Common Problems Electrical:
Window regulator failures, CAN bus communication errors, dashboard warning lights.
Audi History:
Audi AG, a German automobile manufacturer, is renowned for its luxury vehicles and motorsports heritage, founded in 1910.
A4 Cabriolet Context:
The A4 Cabriolet (8H platform) was introduced in 2002 as the convertible variant of the A4 sedan, building upon Audi's history of stylish convertibles like the A4 Cabriolet (8G) and the Audi TT Roadster.
Generation Transition:
The 2006 model year represents a transition from the B6 generation to the B7 generation for the A4 lineup, with the Cabriolet often retaining aspects of the earlier generation or receiving staggered updates.
Manufacturing Location:
Primarily manufactured in Ingolstadt, Germany.