BMW 840i Service Bulletins (2025)
5 manufacturer communications on file.
- 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