Removing the knock sensor of cylinders 1 to 3
Preliminary work
- Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
- Refer to REMOVING THE ACOUSTIC COVER .
- Refer to REMOVING THE COVER ON LEFT AND RIGHT IN THE ENGINE COMPARTMENT AT THE TOP .
- Refer to REMOVING BOTH FRONT-END STRUTS .
- Refer to REMOVING FRONT CROSS CONNECTION .
- Refer to REMOVING THE REAR TOP CROSS CONNECTION .
- Refer to REMOVING THE FAN COWL .
- Refer to REMOVING THE INTAKE FILTER HOUSING (TENSION STRUT ON SHOCK TOWER REMOVED) .
- Refer to REMOVING TOP CLEAN AIR PIPE .
- Refer to REMOVING BOTTOM CLEAN AIR PIPE .
- Refer to REMOVING CHARGE AIR LINE (540i 2017-2020) , or REMOVING CHARGE AIR LINE (540i xDrive 2017-2020) .
- Refer to REMOVING THE THROTTLE BODY (540i 2017-2020) , or REMOVING THE THROTTLE BODY (540i xDrive 2017-2020) .
- Refer to REMOVING THE DRIVE BELT FOR ALTERNATOR (540i 2017-2020) , REMOVING THE DRIVE BELT FOR ALTERNATOR (540i xDrive 2017-2020) .
- Refer to REMOVING THE ALTERNATOR (540i 2017-2020) , or REMOVING THE ALTERNATOR (540i xDrive 2017-2020) .
NOTE:
RISK OF DAMAGE
Electrostatic discharge.
Damage to or destruction of electrical components.
Electrostatic discharge.
Damage to or destruction of electrical components.
- Leave the electrical components in their original packaging until they are being installed. Only use the original packaging for returning the product. Always package removed components straight away.
- Read and comply with user information on using the associated special tool 12 7 060.
- Only tap the housings of electrical components. Do not tap pins or multi-pin connectors directly.
- Wear electrically conductive clothing and antistatic shoes (with ESD symbol).
- For additional information see: NOTES ON ESD (ELECTROSTATIC DISCHARGE) PROTECTION .

