M440i Convertible

50 service bulletins filed with NHTSA for this model year

• May 6, 2026ENGINEB010126

  The 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.

• Feb 16, 2024VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEMB640422

  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 recirculated airflap moves to a different position. Due to the complex design of the heating and air-conditioning unit, the kinematics causing it (top or bottom,left or right) may not be able to be precisely located. Depending on the vehicle model, the number o

• Jan 11, 2024ELECTRICAL SYSTEMB611305

  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 how to handle “discharged battery” complaints.

• Jan 8, 2024STEERINGB360121

  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 acknowledgement (clunk) as seen at the 11 second mark of the video. See attached video V36 01 21.

• Jan 5, 2024ELECTRICAL SYSTEMB610524

  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.

• Jan 2, 2024SEATSB521723

  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.

• Oct 13, 2023SERVICE BRAKES, HYDRAULICB340714

  Functional noises (squealing/honking) when braking shortly before the vehicle comes to a stop. CAUSE Material-

• Aug 1, 2023ENGINE AND ENGINE COOLINGB240323

  ?A software error may cause an unwanted pressure pulsation in the transmission during a "Remote Engine Start."

• and 42 more

Source: NHTSA manufacturer communications (technical service bulletins).