Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI2009A6 BASEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 48 (4.2L V8 5V ENGINE MECHANICAL, ENGINE CODE(S): BAT, BNK)
2009 Audi A6 Base
Section 48 (4.2L V8 5V Engine Mechanical, Engine Code(S): Bat, BNK)
2009 Audi A6 BaseSECTION Section 48 (4.2L V8 5V Engine Mechanical, Engine Code(S): Bat, BNK)
WARNING: This page is about a different car, the 2006 Audi A6 and 2005 Audi A6. However, it is still accessible from the selected car via links, so may be relevant.
- 00 - General, Technical Data
- 10 - Engine - Assembly
- 13 - Engine - Crankshaft, Cylinder Block
- Engine, disassembling and assembling
- Drive plate, removing and installing
- Timing chain covers
- Camshaft drive
- Power take-off
- Crankshaft, removing and installing
- Piston and connecting rod, disassembling and assembling
- 15 - Engine - Cylinder head, Valvetrain
- Cylinder head, removing and installing
- Intake manifold, removing and installing
- Valvetrain, servicing
- 17 - Engine - Lubrication
- Lubrication system components, removing and installing
- Lubrication system components, removing and installing
- Oil pump, lower section of oil pan, component overview
- Oil pan (lower part), removing and installing
- Oil pump, removing and installing
- Upper section of oil pan, component overview
- Oil pan (upper part), removing and installing
- Oil check valves and spray nozzle valve, component overview
- Oil check valves and spray nozzle valve, removing and installing
- Oil filter housing, component overview
- Oil filter housing, removing and installing
- Oil cooler, removing and installing
- Oil pressure and oil pressure switch, checking
- Engine oil
- Oil level, checking
- Lubrication system components, removing and installing
- 19 - Engine - Cooling system
- Cooling system components, removing and installing
- Cooling system components, removing and installing
- Coolant hose connection diagram
- Cooling system, draining and filling
- Coolant pump and coolant regulator, component overview
- Coolant pump, removing and installing
- Coolant thermostat, removing and installing
- Thermostat, checking
- Coolant pipes, component overview
- Front coolant line, removing and installing
- Rear coolant line, removing and installing
- Left coolant pipe, removing and installing
- Radiator and coolant fan, component overview
- Radiator, removing and installing
- Fan shroud, removing and installing
- Cooling system, checking for leaks
- Coolant fan, removing and installing
- Cooling system components, removing and installing
- 26 - Exhaust system, Emission controls
- Exhaust system components, removing and installing
- Exhaust system components, removing and installing
- Exhaust system, assembly overview
- Center muffler and rear muffler, separating
- End pipe, replacing
- Left front exhaust pipe (with catalytic converter), removing and installing
- Right exhaust pipe (with catalytic converter), removing and installing
- Left exhaust manifold, removing and installing
- Right exhaust manifold, removing and installing
- Exhaust system, installing free of tension
- Tail pipes, aligning
- Exhaust system, checking for leaks
- Secondary Air Injection (AIR), servicing
- Secondary Air Injection (AIR), servicing
- Secondary air injection (AIR) system, overview
- Secondary Air Injection (AIR) Pump Motor V101, removing and installing
- Combination valve for Secondary Air Injection (AIR), checking for function and leaks
- Left combination valve for Secondary Air Injection (AIR), removing and installing
- Right combination valve for Secondary Air Injection (AIR), removing and installing
- Exhaust system components, removing and installing
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.