Remove both lower catalytic converters near engine
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2023 BMW M5, 2022 BMW M5, 2021 BMW M5, 2020 BMW M5, and 2019 BMW M5. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Hot fluids
.
Risk of scalding!
Risk of scalding!
- Conduct all work in the vehicle wearing appropriate personal protective equipment only.
NOTE:
TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
NOTE:
TECHNICAL INFORMATION
Grease the threads of new oxygen sensors thinly and evenly.
For oxygen sensors that are reused, the following should be observed:
Thinly and evenly grease the oxygen sensor on the thread only. Do not clean the part of the oxygen sensor that does not protrude into the exhaust line (sensor ceramics) and do not grease.
For additional information see: 11 00... OVERVIEW OF CONSUMABLES IN APPLICABLE BMW PARTS CATALOGUE
Grease the threads of new oxygen sensors thinly and evenly.
For oxygen sensors that are reused, the following should be observed:
Thinly and evenly grease the oxygen sensor on the thread only. Do not clean the part of the oxygen sensor that does not protrude into the exhaust line (sensor ceramics) and do not grease.
For additional information see: 11 00... OVERVIEW OF CONSUMABLES IN APPLICABLE BMW PARTS CATALOGUE
Preliminary work
- Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
- Refer to REMOVING THE REAR DIFFUSER .
- Removing the undershield on the left fuel tank.
- Loosen screws (1).
- Loosen screws (2).
- Remove the undershield (1) at the fuel tank on the left.
- Refer to REMOVING UNDERSHIELD ON THE FUEL TANK ON THE RIGHT .
- Refer to REMOVING REINFORCEMENT STRUT .
- Refer to REMOVING REAR TUNNEL CONNECTING SUPPORT .
- Refer to REMOVING EXHAUST SYSTEM .
- Refer to REMOVING THE COVER OF THE ENGINE COMPARTMENT AT THE REAR LEFT .
- Removing the cover of the rear right engine compartment.
- Loosen the lock (1)
- Remove the cover (2).
Covering the vehicle battery
WARNING: Unprotected battery terminals. Risk of short circuits! Risk of fire!- Cover the vehicle battery
NOTE: The following step(s) must be performed if the listed component(s) is/are installed.- Cover the vehicle battery with the special tool 2 452 007 as shown.
- Refer to REMOVING LEFT AND RIGHT WIPER ARM .
- Refer to REMOVING THE COWL COVER .
- Refer to REMOVING TRAILING LINK AT SPRING BOLT .
- Refer to REMOVING THE COWL UPPER PART IN THE CENTER .
- Refer to REMOVING THE COVER PANEL OF THE MASTER DME CONTROL UNIT .
- Refer to REMOVING THE COVER PANEL OF THE SLAVE DME CONTROL DEVICE .
- Refer to REMOVING THE ACOUSTIC COVER .
- Refer to REMOVING THE LAMBDA OXYGEN SENSOR FOR THE CYLINDERS 1 TO 4 .
- Refer to REMOVING LAMBDA OXYGEN SENSOR FOR THE CYLINDERS 5 TO 8 .
- Refer to REMOVING COOLANT EXPANSION TANK .
- Refer to REMOVING HOLDER OF DME CONTROL UNIT FOR CYLINDERS 5 TO 8 .
- Refer to REMOVING EXPANSION TANKS FOR THE CHARGE AIR COOLERS .
- Refer to LIFTING THE HEAT SHIELD AT THE SIDE .
- Refer to REMOVING THE OXYGEN SENSOR MONITOR OF CYLINDER BANK 1 .
- Removing conduit from bank 1.
- Loosen screws (1).
- Slide conduit (2) downwards.
- Refer to REMOVING THE WIRING HARNESS FROM THE CYLINDER BANK 2 .
- Refer to REMOVING UPPER HEAT SHIELD .
Variant with gasoline particulate filter cylinder 1 through 4
NOTE:
The operations shown only for one side must be carried out on both sides.
- Unscrew all bolts and nuts (arrows).
- Remove the underbody planking (1).
Removing the stiffening plate
NOTE:
TECHNICAL INFORMATION
Secure component against falling.
Secure component against falling.
NOTE:
TECHNICAL INFORMATION
Driving without thrust field is not permissible.
Driving without thrust field is not permissible.
- Loosen screws (1).
- Remove screws (arrows).
- Pull out and remove the thrust field (3) on the covers of the steering assembly (2).
Removing the heat shields
- Loosen screws and nuts (arrows).
- Remove the heat shield (1).
- Loosen screws and nuts (arrows).
- Remove the heat shield (1).
Remove transmission crossmember .
- Support the transmission using special tools 0 495 498 (23 4 050) and 2 219 012 .
- Secure the transmission with the luggage strap (1).
- Release the screw (1) and remove.
- Loosen screws (2).
- Remove the transmission cross member (3).
Partially loosening the prop shaft
NOTE:
RISK OF DAMAGE
Damage to prop shaft during removal .
Non-observance of the removal guidelines for the prop shaft on the rear axle differential may cause severe damage .
Damage to prop shaft during removal .
Non-observance of the removal guidelines for the prop shaft on the rear axle differential may cause severe damage .
- Do not disassemble the three-hole flange, flexible disc and prop shaft. The three-hole flange to the rear axle differential is balanced with the flexible disc and prop shaft.
- Loosen the recessed nut against the direction of travel in clockwise direction. The prop shaft must be loosened on the recessed nut only and exclusively in the direction of rotation otherwise the anti-twist lock of the bi-hexagonal flange nut is damaged.
- In the event of a damaged anti-twist lock on the bi-hexagonal flange nut: Replace the rear axle differential.
- Mark the installation position of the threaded connection (1) of the flexible disc (2) and the three-hole flange (3).
- Remove screws (arrows).
The identification makes it possible to install the prop shaft in the same position again. This should prevent a humming noise from the drive train during driving.
- Loosen the screws (1) on the central mount and hold down the prop shaft.
A major deflection angle of the prop shaft may damage the prop shaft and/or the joints.
- Tie up the prop shaft to the vehicle underbody.
Lowering transmission
- Lower the transmission with the special tools 0 495 498 (23 4 050) and 2 219 012 .
NOTE:
TECHNICAL INFORMATION
Notes on universal transmission support are a fundamental requirement for these repair instructions and must be complied with at all times.
Notes on universal transmission support are a fundamental requirement for these repair instructions and must be complied with at all times.
- Transmission must be secured to the support with the tensioning strap (1).
- Release the nut (1).
- Release the nut (2).
- Unlock plug connection (1) and disconnect.
- Unclip the differential pressure sensor (2) with the pressure pipe from the clamp (1).
- Unclip the pressure line (2) from the clamps (1).
- Guide in the differential pressure sensor downwards with the pressure line.
- Loosen screw (1).
- Slide the V-ribbon clip (2) toward the top onto the catalytic converter near the engine.
- Loosen nuts (2).
- Remove the catalytic converter near the engine (3) from the stud bolts (1).
- Feed out the catalytic converter near the engine (3) downward.
Variant with gasoline particulate filter cylinder 5 through 8
NOTE:
The operations shown only for one side must be carried out on both sides.
- Insert the undershield (1).
- Tighten all bolts and nuts (arrows).
Removing the stiffening plate
NOTE:
TECHNICAL INFORMATION
Secure component against falling.
Secure component against falling.
NOTE:
TECHNICAL INFORMATION
Driving without thrust field is not permissible.
Driving without thrust field is not permissible.
- Loosen screws (1).
- Remove screws (arrows).
- Pull out and remove the thrust field (3) on the covers of the steering assembly (2).
Removing the heat shields
- Loosen screws and nuts (arrows).
- Remove the heat shield (1).
- Loosen screws and nuts (arrows).
- Remove the heat shield (1).
Remove transmission crossmember .
- Support the transmission using special tools 0 495 498 (23 4 050) and 2 219 012 .
- Secure the transmission with the luggage strap (1).
- Release the screw (1) and remove.
- Loosen screws (2).
- Remove the transmission cross member (3).
Partially loosening the prop shaft
NOTE:
RISK OF DAMAGE
Damage to prop shaft during removal .
Non-observance of the removal guidelines for the prop shaft on the rear axle differential may cause severe damage .
Damage to prop shaft during removal .
Non-observance of the removal guidelines for the prop shaft on the rear axle differential may cause severe damage .
- Do not disassemble the three-hole flange, flexible disc and prop shaft. The three-hole flange to the rear axle differential is balanced with the flexible disc and prop shaft.
- Loosen the recessed nut against the direction of travel in clockwise direction. The prop shaft must be loosened on the recessed nut only and exclusively in the direction of rotation otherwise the anti-twist lock of the bi-hexagonal flange nut is damaged.
- In the event of a damaged anti-twist lock on the bi-hexagonal flange nut: Replace the rear axle differential.
- Mark the installation position of the threaded connection (1) of the flexible disc (2) and the three-hole flange (3).
The identification makes it possible to install the prop shaft in the same position again. This should prevent a humming noise from the drive train during driving.
- Remove screws (arrows).
- Loosen the screws (1) on the central mount and hold down the prop shaft.
A major deflection angle of the prop shaft may damage the prop shaft and/or the joints.
- Tie up the prop shaft to the vehicle underbody.
Lowering transmission
- Lower the transmission with the special tools 0 495 498 (23 4 050) and 2 219 012 .
NOTE:
TECHNICAL INFORMATION
Notes on universal transmission support are a fundamental requirement for these repair instructions and must be complied with at all times.
Notes on universal transmission support are a fundamental requirement for these repair instructions and must be complied with at all times.
- Transmission must be secured to the support with the tensioning strap (1).
- Release the nut (1).
- Unclip and remove the pressure line (3) from the clamps (2).
- Release the nut (2).
- Unlock plug connection (1) and disconnect.
- Unclip the differential pressure sensor (2) with the pressure pipe from the clamp (1).
- Feed out the differential pressure sensor with the pressure line in a downward direction.
- Loosen screw (2).
- Slide the V-ribbon clip (1) toward the top onto the catalytic converter near the engine.
- Loosen nuts (2).
- Remove the catalytic converter near the engine (3) from the stud bolts (1).
- Feed out the catalytic converter near the engine (3) downward.