The Recall Desk
HighNHTSA·21V598000·Announced 2021-08-02

2020 BMW X4 Engine Software Defect Disables Braking Assist

BMW is recalling multiple 2020-2021 models, including the X4, due to engine management software that may disable braking assist. Owners should contact BMW at 1-800-525-7417 for a free software update.

What this means for you

Real risk of harm even if no illness or injury has been reported yet. Stop using the product and follow the agency's guidance.

Our severity reasoning: No reported injuries, deaths, or crashes. Loss of braking assist is a safety risk, but full mechanical braking remains available and can be used without power assistance. The defect is correctable through a free software update. Risk-of-harm products where no injury has been reported score 3 under the rubric.

Plain-English summary

BMW of North America, LLC is recalling certain 2020 model BMW M340i, M340i xDrive, 540i, 540i xDrive, X3 M40i, X4 M40i, and 745Le xDrive vehicles, as well as 2019-2021 Z4 M40i and 2020-2021 Toyota Supra vehicles, manufactured with a defect in the engine management software.

During engine start, the engine management software may cause a loss of braking assist, which is the power assistance system that helps reduce the braking force needed from the driver. However, full mechanical braking without power assist remains available. Loss of braking assist can increase the risk of a crash.

A total of 50,024 vehicles are affected by this recall. BMW began notifying owners on September 17, 2021.

Owners can contact BMW customer service at 1-800-525-7417 to schedule a free software update. Dealers will update the engine management software at no cost. Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153) or visit www.nhtsa.gov for more information.

The recalled product

Product
BMW, TOYOTA 745LE, X4, X3, M340I
Brand
BMW
Manufacturer
BMW of North America, LLC
Category
Vehicle — Brake System
Hazard
Affected units
50,024

Is your product affected?

Check your packaging against the codes below. If any of them match, the product is part of this recall.

Model numbers (7)

  • 745LE
  • X4
  • X3
  • M340I
  • 540I
  • Z4
  • SUPRA

Distribution

Distributed nationwide across the United States.

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