2015 Audi A6 Quattro Service and Repair Manual

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Covers all 2015 A6 Quattro trims — Prestige Sedan 4-Door, TDI Progressiv Sedan 4-Door, Premium Sedan 4-Door +6 more ·
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2015 Audi A6 Quattro 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.

Built for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and use wiring diagrams and system sections to diagnose problems faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Electrical coverage with wiring diagrams
  • Coverage across key systems: engine, transmission, brakes, steering, suspension, HVAC, and more

Trims covered

  • Prestige Sedan 4-Door
  • TDI Progressiv Sedan 4-Door
  • Premium Sedan 4-Door
  • Progressiv Sedan 4-Door
  • Premium Plus Sedan 4-Door
  • TDI Technik Sedan 4-Door
  • TDI Premium Plus Sedan 4-Door
  • TDI Prestige Sedan 4-Door
  • Technik Sedan 4-Door

Engines covered

  • 3.0L 2995CC V6 GAS DOHC Supercharged
  • 3.0L 2967CC 181Cu. In. V6 DIESEL DOHC Turbocharged
  • 2.0L 1984CC 121Cu. 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 #18V86200005/12/2018Component: ELECTRICAL SYSTEM:WIRING

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2015-2016 Audi A6 Sedans and 2015 Audi A7 vehicles. The auxiliary heater electrical connector on these vehicles may have been incor

Consequence

The extra resistance can cause the connector to overheat, increasing the risk of a fire.

Remedy

Volkswagen will notify owners, and dealers will inspect the auxiliary heater connector, replacing th

NHTSA #17V00200003/01/2017Component: ENGINE AND ENGINE COOLING:COOLING SYSTEM

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2013-2017 Audi A5, A5 Cabriolet and Q5 vehicles, 2013-2016 Audi Allroad and Audi A4 vehicles and 2012-2015 Audi A6 vehicles. These

Consequence

If the coolant pump overheats, it can increase the risk of a fire.

Remedy

Audi will notify owners, and dealers will update the software so that the power supply to the coolan

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 #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.

TSB #11031053

This bulletin provides informaiton regarding the Universal Traffic Recorder.

Showing the 8 most recent of 714 technical service bulletins on file with NHTSA.

20180113Component: UNKNOWN OR OTHERCrash reported

ON THE HIGHWAY, MY A6 TURNED PERPENDICULAR AND WAS HIT BY A SEMI TRUCK. SPEAKING WITH THE AUDI REPRESENTATIVES THEY DID NOT UNDERSTAND HOW THIS COULD HAPPEN. IS THERE A DEFECT THAT WOULD ALLOW THE CA

20260117Component: WHEELS

I am writing to report a serious and life-threatening safety incident involving my Audi vehicle following recent service performed by an authorized Audi dealer. Vehicle information: Model: Audi (201

20241016Component: ENGINE AND ENGINE COOLING

The contact owns a 2015 Audi A6. The contact stated that while driving on neighborhood roads at approximately 25 MPH, the coolant warning light was illuminated. The contact proceeded to park on the si

20231231Component: FUEL/PROPULSION SYSTEM

P2067 engine check code which shows faulty fuel sensor. Audi has recalled other year Audi a6 sedan vehicles with the same issue and this seems to be a safety issue as it can show incorrect fuel gauge

20231117Component: ENGINE

Coolant sprayed on engine components due to leaking Coolant /Water pump. Coolant level is falling below minimum level - Problem confirmed by the dealer 1. Water pump 2. Coolant sprayed onto engine com

Showing the 5 most serious of 28 complaints filed with NHTSA.

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