Introduction
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Market Position
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Vehicle Positioning:
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The Audi TT Mk1 was positioned as a stylish, compact, front-wheel-drive or all-wheel-drive sports coupe/roadster, blending performance with unique design.
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Competitive Analysis
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Key Competitors 1999:
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Porsche Boxster, BMW Z3, Mercedes-Benz SLK, Toyota MR2, Nissan 300ZX.
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Key Features Vehicle
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Design Philosophy:
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The TT's design was heavily influenced by Bauhaus principles, emphasizing simplicity, form, and function, characterized by its rounded, 'bubble' silhouette and distinctive spherical lines.
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Key Features Manual
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Value Proposition:
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Provides essential, detailed electrical repair and diagnostic information for owners and technicians, enabling self-sufficiency in maintaining and repairing the vehicle's complex electrical systems.
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Accessibility:
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Instant digital download format ensures immediate access without shipping delays or physical storage concerns.
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Manual Coverage
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Systems Covered
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Battery Starter Generator Cruise Control:
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Detailed diagnostics and repair procedures for the charging system, starting system, and cruise control operation.
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Windshield Wiper Washer System:
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Coverage of wiper motors, linkages, washer pumps, fluid reservoirs, and controls.
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Exterior Lights Switches:
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Includes headlights, taillights, turn signals, brake lights, fog lights, and associated switches (e.g., headlight switch, turn signal stalk).
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Interior Lights Switches:
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Covers dome lights, vanity lights, door courtesy lights, glove compartment light, and related switches.
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Wiring Harnesses:
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Extensive coverage of wiring diagrams, troubleshooting faulty circuits, wire routing, connector identification, and repair techniques.
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Lighting Control Modules:
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Information on any specific modules controlling lighting functions.
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Instrument Cluster And Gauges:
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Diagnostics and repair for speedometer, tachometer, fuel gauge, coolant temperature gauge, warning lights, and illumination.
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Audio System Wiring:
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Wiring schematics for factory and optional audio systems, including speaker connections and head unit integration.
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Climate Control Electrical Components:
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Wiring for HVAC blower motors, control modules, sensors, and actuators.
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Power Windows Locks Mirrors:
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Electrical troubleshooting for window regulators, door lock actuators, central locking systems, and power mirror adjustments.
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Airbag System Wiring:
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Wiring for SRS components, including airbags, seatbelt pretensioners, impact sensors, and control modules.
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ECU And Sensor Wiring:
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Diagrams and troubleshooting for Engine Control Unit (ECU) and various sensor connections.
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Procedures Included
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Troubleshooting Methodology:
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Systematic diagnostic procedures for identifying and resolving electrical faults.
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Wiring Diagram Interpretation:
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Guidance on reading and understanding complex electrical schematics.
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Component Testing:
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Instructions for testing the functionality of electrical components using multimeters and other diagnostic tools.
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Wiring Repair Techniques:
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Methods for repairing damaged wires, crimping connectors, and soldering.
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Fuse And Relay Identification:
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Location and function of all fuses and relays within the vehicle's electrical system.
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Module Replacement And Coding:
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While primarily electrical, may touch on procedures for replacing certain control modules.
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Technical Depth
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Depth Of Coverage:
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Comprehensive, focusing on diagnosis and repair of electrical systems.
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Diagnostic Tools Required:
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Requires a multimeter, test light, and potentially specialized scan tools for advanced diagnostics (though manual may not explicitly list scan tool procedures).
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Maintenance
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Service Intervals
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Oil Change Interval:
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Typically every 15,000 km (9,300 miles) or 1 year, whichever comes first, with synthetic oil. However, Audi's 'Longlife' servicing could extend this based on driving conditions, often requiring specific oil specifications.
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Timing Belt Replacement:
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For the 1.8T engine, the timing belt should be replaced every 90,000 - 120,000 km (56,000 - 75,000 miles) or 5 years, as it is a critical maintenance item. The manual would detail the exact procedure and associated components (tensioners, idlers, water pump).
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Fluid Specifications
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Engine Oil Type:
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Full Synthetic SAE 5W-40 or 0W-40, meeting VW 502 00 specification. Consult manual for exact spec.
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Coolant Type:
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G12 or G12+ (VW TL 774 C or F), a pink/red OAT-based coolant.
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Brake Fluid Type:
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DOT 4.
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Known Issues
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Coil Pack Failure:
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The 1.8T engine is known for occasional ignition coil pack failures, leading to misfires and rough running. The manual will detail testing procedures.
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ABS Sensor Issues:
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ABS wheel speed sensors can fail, causing ABS and ESP/ASR warning lights to illuminate. The manual covers diagnosis.
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Oil Consumption:
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Some 1.8T engines may exhibit moderate oil consumption, especially at higher mileage. Regular checks are advised.
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