2018 Audi A6 Service and Repair Manual

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Covers all 2018 A6 trims — Premium Sedan 4-Door, S Line Sedan 4-Door, Premium Plus Sedan 4-Door +2 more ·
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2018 Audi A6 service and repair manual a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Designed for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and reference wiring diagrams and system sections quickly while you work.

What's included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Wiring diagrams and electrical sections
  • Powertrain, brakes, steering, suspension, HVAC and more

Trims covered

  • Premium Sedan 4-Door
  • S Line Sedan 4-Door
  • Premium Plus Sedan 4-Door
  • Sport Sedan 4-Door
  • Luxury Sedan 4-Door

Engines covered

  • 2.0L 1984CC 121Cu. In. l4 GAS DOHC Turbocharged
  • 1.8L 1798CC 110Cu. In. l4 GAS DOHC Turbocharged

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams
NHTSA #19V03500016/01/2019Component: FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL

Volkswagen Group of America, Inc. (Audi) is recalling certain 2016-2018 Q7, A6 and A7 vehicles, and 2015-2018 Audi A8 vehicles. The left and right fuel rails may leak fuel.

Consequence

A fuel leak in the presence of an ignition source can increase risk of a fire.

Remedy

Audi has notified owners, and dealers will replace the left and right fuel rail, free of charge. Th

NHTSA #18V37000004/06/2018Component: AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2013-2018 Audi S6 and S7, 2012-2018 A7 and A6 Sedan, and 2014-2018 RS7 vehicles equipped with basic seats (with or without heating).

Consequence

If the PODS module malfunctions, the front passenger air bag may not deploy properly in the event of

Remedy

Volkswagen will notify owners, and dealers will install a PODS system repair kit, free of charge. T

TSB #11033492

This bulletin provides informaiotn when the starter battery is discharged or defective.

TSB #11033475

The high-voltage batteries in electric vehicles are subject to various ageing effects which could lead to the energy content (energy density) being reduced. This reduction in the energy content, which is due to factors. Revised header. Adde

TSB #11033474

This bulletin provides information when there are noises after selecting a ear while idling and the vehicle is stationary, or while driving.

TSB #11033457

This is a notice for software changes with the ODIS diagnostic program to correct the communication during vehicle programming function: A software fix is needed to correct the issue: The ODIS Audi Brand update 2.41.1 is setting a ODS5003E

TSB #11032165

This bulletin provides informaiotn when the starter battery is discharged or defective.

TSB #11032137

This bulletin provides information about professional noise analysis with the VAS 611 015 PICO-NVH tool

TSB #11032131

This bulletin provides diagnostic information for the vehicle locking system.

TSB #11031064

This Reporting obligation requests that technicians contact the Technical Assistance Center (TAC) when the diagnostic tester refers to this reportin gobligation or to TPI 2033392.

Showing the 8 most recent of 531 technical service bulletins on file with NHTSA.

20260312Component: ELECTRICAL SYSTEMFire reported

February 27, at approximately 1:20am my vehicle caught fire while parked in the driveway after sitting for about 9 hours. The fire originated near the gas tank. The fire department was called, there i

20260312Component: FUEL/PROPULSION SYSTEMFire reported

February 27, at approximately 1:20am my vehicle caught fire while parked in the driveway after sitting for about 9 hours. The fire originated near the gas tank. The fire department was called, there i

20260312Component: UNKNOWN OR OTHERFire reported

February 27, at approximately 1:20am my vehicle caught fire while parked in the driveway after sitting for about 9 hours. The fire originated near the gas tank. The fire department was called, there i

20260312Component: AIR BAGS

Audi is unable to correct the recall repairs despite several attempts by us to schedule. Advised parts are no longer available and were not available during 2 previous attempts to repair.

20240327Component: ENGINE

2018 Audi A6 3.0T diagnosed a coolant leak due to water pump failure at less than 43k miles on March 27, 2024. In July 2023 (at less than 39k miles), the vehicle's thermostat was replaced due to a coo

Showing the 5 most serious of 16 complaints filed with NHTSA.

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