2017 BMW 440i recalls & problems

Recent owner complaints

• Feb 28, 2026Engine
  Subject: Safety Defect Report – B58TU Oil Pump Failure Causing Sudden Vehicle Disablement I am submitting a safety defect report regarding BMW vehicles equipped with the B58 Technical Update engine, primarily model years 2019 to 2021 including 340i, 440i, 540i, X3 M40i, and Toyota Supra models using this engine variant. These vehicles utilize a variable displacement oil pump that contains an internal thermoplastic pressure-regulating component. Field reports indicate this internal component fractures, resulting in sudden loss or instability of engine oil pressure. Failures frequently occur during cold start operation in low ambient temperatures. In many cases, drivers receive limited or…
• Nov 21, 2025Service brakes
  Took 2017 BMW 440i in for annual state inspection and maintenance. During inspection, service tech noticed that the plastic clip that holds the emergency brake lines in place had failed and needed to be replaced to prevent damage to the emergency brake cables. Service tech replaced the plastic clip with a metal bolt. My service advisor stated that a plastic clip should have never replaced a metal bolt that is used to protect the emergency brake cables. Have owned BMW’s since 1990 and numerous vehicles since 1968 when I obtained my driver’s license. Paid $804.47 to replace a plastic clip that would have cost nothing if a metal bolt had been used to start with. If the brake lines get…
• Dec 22, 2023Seats
  The Passenger Restraint System was failing and is now constantly showing a Passenger Restraint System alert. It can not tell whether a passenger is in the seat or not. A local BMW specialist says it is a common issue with the passenger occupancy mat.
• Jan 1, 2023Engine
  BMW 4 series has a TSB for leaking coolant this one is not listed but same part and part number is defective and leaking
• Jun 20, 2020Structure › Body
  CONVERTIBLE TOP LEAKS REAR PASSENGER SIDE AND DRIVER SIDE WHEN HEAVY RAIN AND WASHING MY VEHICLE WITH MY HOSE SPRAYER. HAVE REPORTED IT OVER AND OVER THEY'RE SAYING YOU CANNOT USE A HIGH-PRESSURE HOSE ON THE VEHICLE IT'S NOT HIGH PRESSURE. IT LEAKED WHEN TRAVELING DOWN THE HIGHWAY WHEN IT WAS RAINING AND SITTING STEEL IN MY DRIVEWAY AS I WASHED IT IT ALSO LEAKS AFTER THEY RECENTLY FIXED THE VEHICLE WHEN THEY WASHED IT AND THEY'RE SAYING OH WE USE THE HIGH PRESSURE HOSE AND THEY TOLD ME YOU'RE NOT SUPPOSED TO USE A HIGH-PRESSURE HOSE TO WASH THE CAR.THIS HAS OCCURRED OVER A PERIOD OF YEARS

Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.

NHTSA defect investigations

• EA21002 · opened Sep 17, 2021 · openDesiccated Air Bag Inflator Rupture
  From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited. The rapid burning can cause the inflator to rupture during deployment, potentially causing serious or even fatal injury to vehicle occupants. See 2016 Blomquist Report at www.nhtsa.gov/sites/nhtsa.gov/files/documents/expert_report-hrblomquist.pdf.Consequently, all frontal inflators using propellant 2004 that do not contain a "desiccant" (a substance that traps and holds moisture) in US vehicles are under recall. These "non-desiccated" inflators either have been or are required to be replaced.In some cases, the remedy part for these recalled…