BMW 840i Service Bulletins (2021)
125 manufacturer communications on file.
- July 17, 2026•Document ID: 11035500Service Bulletin/Repair InstructionsELECTRICAL SYSTEM; ENGINE
- Mfr Comm. #:
- B110426
- Date Added:
- August 3, 2026
- Manufacturer:
- BMW
SummaryThe manual starting of electronic engine oil level measurement from inside the vehicle, usually afterperforming an engine oil service task, is inoperative or it may lock up at between a 15% to 30% completionrate.
Associated Products (7)Associated Documents - May 6, 2026•Document ID: 11032729Warranty Program/ExtensionENGINE
- Mfr Comm. #:
- B010126
- Date Added:
- May 18, 2026
- Manufacturer:
- BMW
SummaryThe EVAP systems purge (vent) valve limited warranty for defects in materials and / or workmanship has been extended to 15 years / 150,000 miles as determined from the original first in-service / delivery date.
Associated Products (20)Associated Documents - August 21, 2025•Document ID: 11022110Service Bulletin/Repair InstructionsSEATS; ELECTRICAL SYSTEM
- Mfr Comm. #:
- B521125
- Date Added:
- August 24, 2025
- Manufacturer:
- BMW
SummaryIf the seat ventilation is deactivated via the switch or due to parking the vehicle, the fans in the seat cushionor under the seat cushion surface are unpleasantly loud. The fans speed up loudly twice and then turn off. The functionality of the fans is not impaired. This behavior only occurs after the vehicle had been programmed to I level S18A- 25-07-520 and higher; upto, but not including S18A- 25-07-551.
Associated Products (5)Associated Documents - January 16, 2024•Document ID: 10249437Service Bulletin/Repair InstructionsVISIBILITY:POWER WINDOW DEVICES AND CONTROLS; ELECTRICAL SYSTEM
- Mfr Comm. #:
- B510819
- Date Added:
- February 1, 2024
- Manufacturer:
- BMW
SummaryThe basic conditions for initializing the power windows are not met.
Associated Products (77)Associated Documents - January 11, 2024•Document ID: 10249027Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- B611305
- Date Added:
- February 1, 2024
- Manufacturer:
- BMW
SummaryThe 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 how to handle âÂÂdischarged batteryâ complaints.
Associated Products (194)Associated Documents - January 8, 2024•Document ID: 10249018Service Bulletin/Repair InstructionsSTEERING
- Mfr Comm. #:
- B360121
- Date Added:
- February 1, 2024
- Manufacturer:
- BMW
SummaryAt 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 acknowledgement (clunk) as seen at the 11 second mark of the video. See attached video V36 01 21.
Associated Products (77)Associated Documents - January 5, 2024•Document ID: 10249032Service Bulletin/Repair InstructionsELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:INFOTAINMENT
- Mfr Comm. #:
- B610524
- Date Added:
- February 1, 2024
- Manufacturer:
- BMW
SummaryThe Central Information Display goes black intermittently due to resets of the Head Unit (HU-H3). FaultB7F8F9 ÃÂâÃÂÃÂÃÂàÃÂâÃÂÃÂÃÂÃÂHU-H: ResetÃÂâÃÂÃÂÃÂàwill be stored in the HU-H3.
Associated Products (79)Associated Documents - January 5, 2024•Document ID: 10249015Service Bulletin/Repair InstructionsFUEL SYSTEM, GASOLINE
- Mfr Comm. #:
- B160123
- Date Added:
- February 1, 2024
- Manufacturer:
- BMW
SummaryA vehicle arrives at your center to be diagnosed for a micro-leak in the fuel evaporative (EVAP) system(NVLD natural vacuum leak detection). For this condition, the following fault is stored in the DME: 190302 - fuel tank ventilation and scavenging air system, micro-leak: leakage more than 0.5mm For: Model vehicles other that the ones listed above, or for EVAP faults related to a âÃÂÃÂlarge leak,âÃÂàafter confirming that the fuel filler cap is fitted properly, then, proceed to follow the corresponding test plan
Associated Products (70)Associated Documents - January 4, 2024•Document ID: 10249017Service Bulletin/Repair InstructionsSTEERING
- Mfr Comm. #:
- B320223
- Date Added:
- February 1, 2024
- Manufacturer:
- BMW
SummarySITUATION Unusual noises occur only when operating the steering column in the axial direction. 1. A one-time thump sound at the start of movement Shortly after the steering column starts moving, retracting, or extending, a one-time thump noise is heard. See attached video V32 03 23 2. Humming noise while steering column extends in the axial direction. The sound is only heard when the steering column is extended, not when the steering column is retracted. When the steering column starts to move in the extended direction, the humming noise can be heard. See attached video V32 04 23
Associated Products (38)Associated Documents - January 2, 2024•Document ID: 10249023Service Bulletin/Repair InstructionsSEATS; ELECTRICAL SYSTEM
- Mfr Comm. #:
- B521723
- Date Added:
- February 1, 2024
- Manufacturer:
- BMW
SummaryCustomer 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.
Associated Products (27)Associated Documents - November 8, 2023•Document ID: 10245372Service Bulletin/Repair InstructionsSTRUCTURE
- Mfr Comm. #:
- B513218
- Date Added:
- December 6, 2023
- Manufacturer:
- BMW
SummaryThe paint finish on the door jamb (above the door striker) is scratched due to the inner door cavity window seal.
Associated Products (26)Associated Documents - August 1, 2023•Document ID: 10242698Service Bulletin/Repair InstructionsVISIBILITY:SUN/MOON ROOF ASSEMBLY; STRUCTURE:BODY:ROOF AND PILLARS
- Mfr Comm. #:
- B540521
- Date Added:
- September 25, 2023
- Manufacturer:
- BMW
Summary?The sunroof will not operate in either direction.
Associated Products (23)Associated Documents - August 1, 2023•Document ID: 10242691Service Bulletin/Repair InstructionsSTEERING
- Mfr Comm. #:
- B320223
- Date Added:
- September 25, 2023
- Manufacturer:
- BMW
Summary?Unusual noises occur only when operating the steering column in the axial direction.
Associated Products (33)Associated Documents - June 1, 2023•Document ID: 10239615Service Bulletin/Repair InstructionsEQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
- Mfr Comm. #:
- B840323
- Date Added:
- July 24, 2023
- Manufacturer:
- BMW
SummaryBMW AG has issued a Delivery Stop (effective February 9, 2023) on certain Model Year 2022 - 2023 BMW vehicles that were produced between June 29, 2022 and February 16, 2023.
Associated Products (18)Associated Documents - June 1, 2023•Document ID: 10239614Service Bulletin/Repair InstructionsVISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM
- Mfr Comm. #:
- B640821
- Date Added:
- July 24, 2023
- Manufacturer:
- BMW
SummaryThe air conditioning cycles from cold to warm air while driving or while at a stand still. The vent outlet temperatures vary by 25 degrees Fahrenheit or more (38 F to 60 F +) without changing any climate control settings.
Associated Products (35)Associated Documents - June 1, 2023•Document ID: 10239611Service Bulletin/Repair InstructionsELECTRICAL SYSTEM; EXTERIOR LIGHTING
- Mfr Comm. #:
- B630821
- Date Added:
- July 24, 2023
- Manufacturer:
- BMW
SummaryHeadlight check control (CC) message 128 "High beam headlight failure" is displayed. The following fault codes are stored during a vehicle test: 80419A - Left high-beam headlight: Short circuit and/or 8041A5 - light outputs: Number of permitted short circuit cycles exceeded
Associated Products (69)Associated Documents - June 1, 2023•Document ID: 10239610Service Bulletin/Repair InstructionsEXTERIOR LIGHTING:TAIL LIGHTS
- Mfr Comm. #:
- B630321
- Date Added:
- July 24, 2023
- Manufacturer:
- BMW
SummaryCondensation is present on the inner surfaces in one or both taillights (circled).
Associated Products (39)Associated Documents - June 1, 2023•Document ID: 10239604Service Bulletin/Repair InstructionsSTEERING
- Mfr Comm. #:
- B320420
- Date Added:
- July 24, 2023
- Manufacturer:
- BMW
SummaryA groaning type noise is heard during the height adjustment.
Associated Products (14)Associated Documents - June 1, 2023•Document ID: 10239602Service Bulletin/Repair InstructionsFUEL SYSTEM, GASOLINE
- Mfr Comm. #:
- B160123
- Date Added:
- July 24, 2023
- Manufacturer:
- BMW
SummaryA vehicle arrives at your center to be diagnosed for a micro-leak in the fuel evaporative (EVAP) system (NVLD natural vacuum leak detection). For this condition, the following fault is stored in the DME: 190302 - fuel tank ventilation and scavenging air system, micro-leak: leakage more than 0.5 mm.
Associated Products (67)Associated Documents - June 1, 2023•Document ID: 10239601Service Bulletin/Repair InstructionsEQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
- Mfr Comm. #:
- B120323
- Date Added:
- July 24, 2023
- Manufacturer:
- BMW
SummaryBMW AG has issued a Delivery Stop effective June 6, 2023 on certain Model Year 2023 - 2024 BMW vehicles that were produced between October 26, 2022 and May 8, 2023.
Associated Products (65)Associated Documents