Removing catalytic converter
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2025 BMW X4, 2024 BMW X4, 2023 BMW X4, 2022 BMW X4, and 2021 BMW X4. However, it is still accessible from the selected car via links, so may be relevant.
Preliminary work
- Refer to REMOVING THE ACOUSTIC COVER .
- Refer to REMOVING THE LAMBDA OXYGEN SENSOR .
- Refer to REMOVING THE OXYGEN SENSOR MONITOR .
- Refer to REMOVING TANK COVER ON LEFT AND RIGHT .
- Refer to REMOVING THE CONNECTING SUPPORT FROM THE TUNNEL .
- Refer to REMOVING EXHAUST SYSTEM .
WARNING:
Hot surfaces.
Risk of burning!
Risk of burning!
- Perform all work only on components that have cooled down.
CAUTION:
Component with heavy weight.
Injury hazard!
Injury hazard!
- Note component's center of gravity.
- Support component using a jack.
- Secure component against falling off the jack.
CAUTION:
Heavy component.
Heavy components can lead to injury or damage.
Heavy components can lead to injury or damage.
- Remove and install heavy components with the aid of another person/other persons.
If installed: Removing the differential pressure sensor
Removing the differential pressure sensor
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 PROTECTION (ELECTRO STATIC DISCHARGE) .
- Unlock and release the plug connection (1).
- Detach the pressure hose (2) from the differential pressure sensor (4) in the direction of the arrow and set aside.
- Loosen nut (3).
- Feed out differential pressure sensor (4) and remove.
- Disconnect positive battery cable (1) from the clamps (2) and set aside.
- Be sure that the flexible pipe will not be damaged.
Avoid large bending radii and overexpansion.
- Unfasten nut (1).
- Loosen screw (2).
- Loosen screws (3).
- Guide out and remove holder (4).
- Loosen screw (1).
- Feed out V-band clamp (1) and remove.
- Pull out catalytic converter (3) towards the bottom and remove.