2011-2018 Audi A6 Repair Manual

2011-2018 Audi A6 (C74G) OEM Workshop Service & Repair Manual – Instant PDF Download

Get dealership-level service and repair information with this official OEM workshop manual for the 2011-2018 Audi A6 (C74G). Whether you’re performing routine maintenance or tackling advanced repairs, this comprehensive PDF guide provides step-by-step instructions, wiring diagrams, and manufacturer-authorized procedures for precise diagnostics and repairs.

Key Features:

✅ Complete OEM Repair Manual – Covers all systems, service procedures, and repairs.

✅ Wiring Diagrams Included – Essential for electrical troubleshooting and accurate repairs.

✅ Dealer-Authorized Instructions – The same procedures trusted by Audi technicians.

✅ Step-by-Step Guidance – From basic servicing to extensive repairs.

✅ Easy-to-Use PDF Format – Instant access on any device, print only what you need.

🛠 Why Choose This Manual?

Whether you’re a DIY enthusiast or a professional technician, this factory-approved Audi A6 manual ensures you have the most precise and detailed service instructions available.

Table of Contents : 2011-2018 Audi A6 Repair Manual

A- Workshop Repair Manual

• Maintenance (Edition 06.2015).
• Maintenance (Edition 12.2018).
• Technical data for engines.
• Technical data for diesel engines.
• 4-cyl. direct injection engine (1.8, 2.0 ltr. 4-valve turbo TFSI – generation II).
• 4-cyl. direct injection engine (1.8, 2.0 ltr. 4-valve TFSI – generation III).
• 4-cyl. TDI engine (2.0 ltr. 4-valve common rail – generation II).
• 6-cyl. direct injection engine (2.5 ltr., 2.8 ltr. 4-valve).
• 6-cyl. direct-injection engine with a supercharger (3.0 ltr. 4-valve TFSI).
• 6-cyl. TDI engine (3.0 ltr. 4-valve common rail – generation II).
• 6-cyl. TDI engine, 3.0 ltr. 4-valve common rail (EA897 Gen. I).
• 6-cyl. direct-injection engine with a supercharger (3.0l. 4-valve TFSI, EA837evo).
• 8-cyl. direct injection engine (4.0 ltr. 4-valve TFSI).
• Servicing 4-cyl. engine, 1.8 ltr., 2.0 ltr. 4-valve TFSI (EA 888, Gen. II).
• Servicing 4-cyl. engine, 2.0 ltr. 4-valve TFSI (EA 888, Gen. III).
• Servicing 6-cyl. TDI engine, common rail (EA 897 Gen. I).
• TDI injection and glow plug system (6-cyl. 3.0 ltr. 4-valve common rail).
• TDI injection and glow plug system (4-cyl. 2.0 ltr. 4-valve common rail, generation II).
• Direct petrol injection and ignition system (4-cyl. 2.0 ltr. 4-valve turbo with timing chain).
• Direct injection and ignition system (8-cyl. 4.0 ltr. 4-valve TFSI).
• Simos direct petrol injection and ignition system (6-cyl. 2.5 ltr. 4-valve).
• Simos direct petrol injection and ignition system (6-cyl. 3.0 ltr. TFSI 4-valve).
• Simos direct petrol injection and ignition system (6-cyl. 2.8 ltr. 4-valve).
• Fuel supply system, diesel engines.
• Fuel supply system, petrol engines.
• 6-speed manual gearbox 0CS, 0DJ.
• 6-speed manual gearbox 0B1, front-wheel drive.
• 7-speed dual-clutch gearbox 0B5 (S Tronic).
• 7-speed dual-clutch gearbox 0CK.
• 8-speed automatic gearbox 0BW hybrid, front-wheel drive.
• 8-speed automatic gearbox 0BK, four-wheel drive.
• Multitronic 0AW, front-wheel drive.
• Servicing 6-speed manual gearbox 0B1, front-wheel drive.
• Servicing 6-speed manual gearbox 0CS, 0DJ, 0CX.
• Servicing 7-speed dual clutch gearbox 0B5 (S tronic).
• Servicing 7-speed dual clutch gearbox 0CJ, 0CL, 0CK, 0DN, 0DP, 0HL.
• Servicing 8-speed automatic gearbox.
• Servicing Multitroni 0AW.
• Rear final drive 0BC, 0BD, 0BE, 0BF.
• Rear final drive 0BF and 0BE – sport differential.
• Running gear, front-wheel drive and four-wheel drive.
• WheelTyre Guide (Edition 10.2019).
• WheelTyre Guide  (Edition 01.2019).
• Wheels and tyres.
• Brake system.
• Heating, air conditioning.
• Auxiliarysupplementary heater.
• Air conditioner with refrigerant R134a.
• Air conditioners with refrigerant R1234yf – General information.
• Basic information on high-voltage vehicles.
• Communication.
• Trailer Operation Guide.
• Specifications for testing the braking force.
• Fitting instructions radio communication systems.
• Electrical system_ General information.
• Electrical system.
• Electrical system, hybrid (Engine ID CHJA).
• General Body Repairs.
• Body Repairs.
• General body repairs, exterior.
• General body repairs, interior.

B- Electrical Wiring Diagrams

• Electrical Wiring Diagrams From January 2011.

Sample Pages

🚘 2011–2018 Audi A6 (C7/4G) – Specs, Common Problems, Maintenance, Recalls & DTC Codes

⚙️ Technical Specs & Performance

• 🧬 Platform/Generation: A6 C7 (Typ 4G), model years 2011–2018
• 🛠️ Common Engines (varies by market/trim):
  • ⛽ 2.0T TFSI I4 (approx. 180–211 PS variants listed for C7)
  • ⛽ 2.8 FSI V6 (approx. 204 PS variants listed for C7)
  • ⛽ 3.0T (supercharged) V6 quattro (approx. 300–310 PS variants listed for C7)
  • 🧪 Hybrid variants exist in some markets/years
• ⚙️ Transmissions: Automatic options vary by drivetrain/engine (market-dependent; commonly 7-speed S tronic / 8-speed Tiptronic configurations)
• 🛞 Drivetrain: FWD or quattro AWD (market/engine dependent)
• 🏁 Typical 0–60 mph: ~5.5–8.0 sec (varies widely by engine/drivetrain)

🔧 Top 10 Common Mechanical Issues (Owner-Reported Patterns)

1. ⚙️ Oil consumption / leaks (PCV/valve cover/timing cover seepage)
2. 🧯 Water pump/thermostat leaks (coolant smell, low coolant warnings)
3. 🧊 Coolant system faults (after-run pump/aux pump issues on some engines)
4. 🌀 Turbo underboost (2.0T) (wastegate/boost leak/diverter valve)
5. ⛓️ Timing chain tensioner noise (rattle on cold start on some variants)
6. 🧰 PCV system failure (rough idle, lean codes, oil leaks)
7. 🛑 Brake rotor warping / vibration (steering shake under braking)
8. 🦾 Control arm bushings wear (front-end clunks over bumps)
9. 🛞 Wheel bearing humming (speed-dependent drone)
10. 🧭 Steering/EPS noises (creaks/assist inconsistencies)

🧩 Quick Fix Guide (Compact)

• 🛢️ Oil leaks/consumption: inspect PCV + seals; verify correct oil spec and service intervals
• 🧯 Coolant leaks: pressure test system; inspect water pump/thermostat housing and hoses
• 🌀 Underboost: smoke test intake; check diverter valve and charge pipes
• 🦾 Clunks: inspect front control arms/links; align after replacement

💡 Top 10 Common Electrical Issues (Owner-Reported Patterns)

1. 📺 MMI/infotainment freezing (reboots, no audio, black screen)
2. 🛰️ Navigation/phone pairing glitches (Bluetooth drops)
3. 🔋 Battery drain (comfort module wake-ups, accessories not sleeping)
4. 🚨 Parking sensor false alerts (water intrusion / sensor failure)
5. 💡 LED/DRL failures (headlight module issues on some units)
6. 🔑 Keyless entry/intermittent start authorization
7. 🪟 Window regulator / switch faults
8. 🌧️ Rain/light sensor quirks (auto wipers/headlights inconsistent)
9. 🧠 CAN communication faults (multiple modules throwing U-codes)
10. 🎈 Airbag/SRS warning light (seat occupancy/connector issues)

🥊 Top Competitors

• 🇩🇪 BMW 5 Series (F10) ↗
• 🇩🇪 Mercedes-Benz E-Class (W212) ↗
• 🇯🇵 Lexus GS (4th gen) ↗
• 🇬🇧 Jaguar XF (X250) ↗
• 🇯🇵 Infiniti M (M35/M37/M45/M56) ↗
  

📊 Pros & Cons

🛠️ Maintenance Schedule (Smart Baseline)

📢 Recalls, Advisories & Safety Alerts

• 🧯 Coolant after-run pump recall (example campaign): Audi issued a safety recall covering certain 2012–2017 Audi vehicles with 2.0L TFSI engines due to an electric after-run coolant pump defect (risk conditions described by Audi/NHTSA documentation).
• 🧾 Check open recalls by VIN:
  • 🇺🇸 Audi USA Recall/Service Campaign Lookup (VIN tool)
  • 🛡️ NHTSA Recall Lookup (VIN / make-model)
• ⚠️ Reminder: Recall volume varies by year/engine. Always verify by VIN before purchase or long trips.

🧾 DTC Trouble Code List (10 Codes Each)

🚗 Engine Control Module (ECM)

⚙️ Transmission Control Module (TCM)

🛑 ABS / ESC (Brake System)

🎈 SRS Airbag System

🧠 Body Control / CAN Communication