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 MANUALSAUDI2004A8REPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE MECHANICALFUEL SYSTEM4.2L - ENGINE MECHANICAL, ENGINE CODE(S): BFM26 - EXHAUST SYSTEM, EMISSION CONTROLSEXHAUST SYSTEM COMPONENTS, REMOVING AND INSTALLINGLEFT FRONT MUFFLER, REMOVING AND INSTALLING

2004 Audi A8

Left front muffler, removing and installing

2004 Audi A8SECTION Left front muffler, removing and installing

NOTE:

Before raising the vehicle on a hoist (wheels off the ground), first activate the vehicle jack mode → 43 - Self Leveling Suspension .

Special tools, testers and auxiliary items required

Fig 1: Chain Pipe Cutter VAS 6254

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Chain pipe cutter VAS 6254

For vehicles with parking/auxiliary heater:

Fig 2: Removing Bolts For Exhaust Pipe Of Parking Heater/Auxiliary Heater On Noise Insulation

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove bolts - arrows - for exhaust pipe of parking heater/auxiliary heater on noise insulation.

All

Fig 3: Removing Noise Insulation

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove noise insulation - 2 through 4 -.

Fig 4: Separating Left Exhaust Pipe Using Chain Pipe Cutter VAS 6254

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Separate left exhaust pipe using chain pipe cutter VAS 6254.

Dimension - a - 110 mm

NOTE:

Flex joint in front exhaust pipe must not be bent more than 10° , otherwise it may be damaged.

RENDER: 1.0x

NO RELATED

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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.