18 00 020 Removing and installing complete exhaust system (M62, M54)

WARNING: This page is about a different variant/trim than selected.

WARNING: Scalding hazard!
Only perform these tasks after exhaust system has cooled down.

Slacken screws (1) of rear muffler on intermediate muffler.

Fig 1: Removing Rear Muffler To Intermediate Muffler Screws

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Installation:

Tightening torque, refer to 18 00 6AZ in EXHAUST SYSTEM - TIGHTENING TORQUES - X5 (4.6L) .

Clip cover (1) out of retainers (2).

Fig 2: Removing Retainer Cover

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Carefully press cover (1) downwards.

Release screws (2) on rubber mount for rear muffler on left and right.

Fig 3: Releasing Rubber Mount Screws For Rear Muffler

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Release screws (1) on rubber mount for rear muffler on rear axle carrier on left and right.

Fig 4: Releasing Rubber Mount For Rear Muffler To Rear Axle Carrier Screws

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NOTE: Rubber mounts are colored differently.

Red (M62) or gray (M54): for rubber mount of rear muffler on rear axle carrier
Black: for all other rubber mounts

Mixing up the rubber mounts will alter the vibration response of the exhaust system.

Release screws (1) of rear muffler on intermediate muffler and remove both rear mufflers.

Fig 5: Removing Both Rear Mufflers

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Release screws (1) of rubber mounts for intermediate muffler.

Fig 6: Releasing Intermediate Muffler Rubber Mount Screws

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M62:

Release plug connection (1) of monitor sensor on left and right. Clip cable of monitor sensor on left and right out of brackets. Release screws (3) of rubber mounts on left and right.

Fig 7: Release Plug Connection Of Monitor Sensor

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Release plug connection (1) of oxygen sensor on left and right.

Fig 8: Releasing Plug Connection Of Oxygen Sensor

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CAUTION: Carry out following work step with a second person.

M62:

Release screw connections of catalytic converters at exhaust manifolds on left and right and remove exhaust system completely.

Fig 9: Removing Catalytic Converters Screws

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Installation:

Replace self-locking nuts.

Coat threads with CRC copper paste.