2021 BMW M4 Service and Repair Manual
2021 BMW M4 service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Designed for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and reference wiring diagrams and system sections quickly while you work.
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BMW of North America, LLC (BMW) is recalling certain 2021 2 Series (230i, 230i xDrive, M240i, M240i xDrive), 330e, 330e Xdrive, 4 Series Coupe (430i, 430i xDrive, M440i xDrive) M4 Coupe, M4 Competitio
During a crash, a seat belt retractor that does not function as intended increases the risk of injur
Dealers will inspect the seat belt retractors (including the seat belts) and, if necessary, replace
BMW of North America, LLC (BMW) is recalling certain 2020-2021 8 Series Coupe, Grand Coupe and convertible 840i, 840i xDrive, M850i xDrive, M8 and 740 Li, 740 Li xDrive, 750 Li xDrive, M760 Li xDrive,
A loss of ABS and a reduction in braking assistance can increase the risk of a crash.
BMW will notify owners, and dealers will replace the integrated brake system, free of charge. Owner
While driving on a smooth and/or unevenroad, a cracking sound is heard from therear wheel arch area (highlighted in orange) on either the right or left side.
While driving on a smooth and/or uneven road, a cracking sound is heard from the rear wheel arch area (highlighted in orange) on either the right or left side.
An interference noise (groaning noise) can be heard from within the heating and air-conditioning unit in thecenter of the instrument panel. The groaning noise always occurs when either a ventilation flap, air stratification flap or the reci
With the vehicle is on a lift and the front struts are in the extended position, there may be a cracking and orclicking type noise when turning the steering wheel left/right. See attached video V31 01 24. The sound can reoccur when the vehi
The electrical system of BMW vehicles has been subject to an ongoing development process over the last few years. This has led to increased demands being placed on the battery. This document covers important information for the dealer on ho
The Central Information Display goes black intermittently due to resets of the Head Unit (HU-H3). FaultB7F8F9 HU-H: Reset will be stored in the HU-H3.
Customer states one of the front seats is inoperative. The seat heater and power supply are inoperative. During the vehicle test, the seat module does not respond. The power supply fuse for the seat module isfound to have blown.
At low outside temperatures (below 40 degrees F) and slow driving speeds (i.e. when parking, maneuvering)with a large steering angle, the front end can be slightly axially misaligned. This can be felt (jerking)/ heard via an acoustic acknow
Showing the 8 most recent of 72 technical service bulletins on file with NHTSA.
Vehicle brake very very loudly. BMw claims this is normal, this is not true. Vehicle has extremely low miles and performs bad when braking.
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