Checking compression of all cylinders (M5 2018-2022)

Special tools required: 

• 11 0 222 
• 11 8 732 
• 11 8 731 
• 2 410 242

• Read out DME fault memory.
• Check stored faults
• Rectify faults
• Delete fault memory

Preliminary work needed: 

• Remove SPARK PLUGS .

Disconnect the plug connection (1) to the injectors on the DME control unit (bank 1).

Graphic: N74O0

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Disconnect the plug connection (1) to the injectors on the DME control unit (bank 2, if installed).

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Unscrew tip (1) from special tool 11 0 222  .

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Prepare special tool 11 0 222  in conjunction with 11 8 732  and 11 8 731  .

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Screw special tool 11 0 222  into special tool 11 8 731  to 10 Nm.

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Connect special tool 2 410 242 to special tool 11 0 222  with the bayonet closure.

Screw in the 100-bar sensor (1) on the special tool 2 410 242 hand-tight.

Connect 100-Bar sensor (1) with the Integrated Measurement Interface Box.

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Manually screw special tool 11 0 222  into spark plug thread.

1. Connect vehicle with diagnostic tester.
2. Select service function "Check compression of all cylinders".
3. Observe diagnosis instructions.

Illustration: N74.

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Vehicle with diagnosis

Connect 100-Bar sensor (1) with the Integrated Measurement Interface Box.

Observe diagnosis instructions.

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Assemble engine.

Delete the fault memory.