BMW 840i Service Bulletins
142 manufacturer communications on file.
- August 6, 2026•Document ID: 11036432OtherENGINE
- Mfr Comm. #:
- B064126
- Date Added:
- August 28, 2026
- Manufacturer:
- BMW
SummaryFan Return
Associated Products (5)Associated Documents - 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 - March 16, 2026•Document ID: 11030310Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- B650426
- Date Added:
- March 30, 2026
- Manufacturer:
- BMW
SummaryCustomers may report issues with the alarm system not functioning correctly. These concerns may includeone or more of the following: Missing confirmation sound (function cannot be selected or deselected in the Central InformationDisplay (CID) menu). Alarm system deactivated (interior mirror light off). Alarm does not function. DWA LED without function after locking (no flashing/flashing). Acoustic acknowledgement is unavailable or cannot be enabled/disabled via the CID menu underdoors/windows. Tilt alarm sensor “SINE” cannot be reached via diagnostics.
Associated Products (2)Associated Documents - August 21, 2025•Document ID: 11022110Service Bulletin/Repair InstructionsELECTRICAL SYSTEM; SEATS
- 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 - June 6, 2025•Document ID: 11019579Service Bulletin/Repair InstructionsPOWER TRAIN
- Mfr Comm. #:
- B270220
- Date Added:
- June 17, 2025
- Manufacturer:
- BMW
SummaryThere is a jerking or shuddering during either or both of the following: Cornering or accelerating from low speeds Driving with low to medium loads
Associated Products (11)Associated Documents - February 28, 2025•Document ID: 11014660Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- B520525
- Date Added:
- March 3, 2025
- Manufacturer:
- BMW
SummaryThe customer states: The driver’s seat will not return to its last saved position. No seat memory. The heated seats settings in the menu are missing/different than in their previous BMW vehicle. They canno longer select, under the climate rules, at what temperature Fahrenheit the heated seats willautomatically turn on. Certain other “apps” and functions are not available The driver’s seat moves to an unknown memory position
Associated Products (11)Associated Documents - February 3, 2025•Document ID: 11014038Service Bulletin/Repair InstructionsSTRUCTURE:BODY
- Mfr Comm. #:
- B514616
- Date Added:
- February 10, 2025
- Manufacturer:
- BMW
SummaryUpon opening and closing the tailgate, a creaking/groaning sound can be heard from tailgate actuator.
Associated Products (13)Associated Documents - January 22, 2025•Document ID: 11013098OtherSEATS
- Mfr Comm. #:
- B060425
- Date Added:
- January 25, 2025
- Manufacturer:
- BMW
SummaryFITTINGS RETURN
Associated Products (1)Associated Documents - January 10, 2025•Document ID: 11013116Service CampaignSUSPENSION
- Mfr Comm. #:
- B370125
- Date Added:
- January 25, 2025
- Manufacturer:
- BMW
SummaryDELIVERY STOP: SUSPENSION STRUT HOLDER
Associated Products (2)Associated Documents - November 4, 2024•Document ID: 11010762Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- B512724
- Date Added:
- November 25, 2024
- Manufacturer:
- BMW
SummaryThe Ethernet bus of the Body Domain Controller (BDC) is interrupted so that audio output, rear viewcamera, or the driver assistance systems fail. The symptoms begin to appear during auto locking at approx.10 mph, or after the Central Locking button is activated. Dependent upon vehicle equipment, the following permanent SAE faults may be stored in the vehicle: S 0219, No Communication possible with: Amplifier S 0261, No Communication possible with: Camera-based driver assistance S 0273, No Communication possible with: Headunit S 0313, No Communication possible with: All-round vision camera S 0386, No Communication possible with: Instrument Panel S 0394, No Communication possible with: Telematics control unit
Associated Products (10)Associated Documents - October 22, 2024•Document ID: 11009417Service CampaignUNKNOWN OR OTHER
- Mfr Comm. #:
- B511524
- Date Added:
- October 28, 2024
- Manufacturer:
- BMW
SummaryDuring supplier production, the passenger sunvisor shaft may not have been fully pressed into the socket (arrow).
Associated Products (1)Associated Documents - July 29, 2024•Document ID: 11005449Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- B511219
- Date Added:
- August 2, 2024
- Manufacturer:
- BMW
SummaryA check control message or MIL (Malfunction Indicator Lamp) may be illuminated, with one or more of thefollowing faults stored: 138207 - Active cooling damper control (AKKS), top: blockage at warm ambient temperature 21B043 - Active cooling damper control (AKKS), top: blockage at all ambient temperatures 138222 - Active cooling damper control (AKKS), above: positional deviation error detected at warm ambienttemperature 138209 - Active cooling damper control (AKKS), top: Control deviation at all ambient temperatures 13822B - Active cooling damper control (AKKS), top: Control deviation at all ambient temperatures 21B042 - Active cooling damper control (AKKS), below: blockage at all ambient temperatures 138206 - Active cooling damper control (AKKS), bottom, blockage at warm ambient temperature 138225- Active air-flap control, bottom: top limit position not detected 138224- Active air-flap control, bottom: bottom limit position not detected
Associated Products (6)Associated Documents - July 25, 2024•Document ID: 11005227Service CampaignUNKNOWN OR OTHER
- Mfr Comm. #:
- B511524
- Date Added:
- July 25, 2024
- Manufacturer:
- BMW
SummaryDuring supplier production, the passenger sunvisor shaft may not have been fully pressed into the socket (arrow).
Associated Products (1)Associated Documents - June 12, 2024•Document ID: 11002864Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- B650121
- Date Added:
- July 2, 2024
- Manufacturer:
- BMW
SummaryNo Bass or a cracking noise can be heard from the bass speakers.
Associated Products (10)Associated Documents - May 3, 2024•Document ID: 11000500Service Bulletin/Repair InstructionsPOWER TRAIN
- Mfr Comm. #:
- B270220
- Date Added:
- May 29, 2024
- Manufacturer:
- BMW
SummaryThere is a jerking or shuddering during either or both of the following: Cornering or accelerating from low speeds Driving with low to medium loads There are no warning lights or Check Control messages.
Associated Products (7)Associated Documents - January 16, 2024•Document ID: 10249437Service Bulletin/Repair InstructionsELECTRICAL SYSTEM; VISIBILITY:POWER WINDOW DEVICES AND CONTROLS
- 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 InstructionsEQUIPMENT:ELECTRICAL:INFOTAINMENT; ELECTRICAL SYSTEM
- 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