BMW · April 2026

2021-2024 BMW Z4 Service Bulletin Roundup

In April 2026, BMW Z4 owners saw no new recalls, complaints, or investigations, but several service bulletins were issued. These addressed issues ranging from convertible top malfunctions and digital key charging problems to intermittent humming noises and engine jolts during acceleration.

Byeditor sarah mitchell
BMW Z4 April 2026 safety roundup — editorial illustration
Editorial illustration generated for this monthly digest.

April 2026 brought a quiet period for the BMW Z4 regarding recalls, complaints, and investigations. However, BMW released several service bulletins (TSBs) for 2021-2024 BMW Z4 models, providing important information for owners and technicians. These bulletins cover a range of topics, from convertible top issues to digital key functionality and engine behavior, offering solutions to common problems that owners might encounter. These BMW Z4 service bulletins are crucial for maintaining vehicle performance and addressing potential concerns.

Recalls

No new recalls were filed for the BMW Z4 in April 2026.

Owner Complaints

No new owner complaints were filed for the BMW Z4 in April 2026.

Investigations

No new investigations were opened, upgraded, or closed for the BMW Z4 in April 2026.

Service Bulletins

BMW released a series of service bulletins to address specific issues across various 2021-2024 BMW Z4 models. These BMW Z4 service bulletins provide diagnostic and repair procedures for technicians, helping to resolve problems efficiently.

Convertible Top Fault Code 805090

Owners of 2021-2023 BMW Z4 models experiencing a convertible top that fails to open or close, accompanied by fault code 805090, should be aware of BMW Service Information Bulletin SIB 54 03 24. This issue is often caused by a dislodged Hall effect sensor within the convertible top linkage, which requires replacement to restore proper function.

Digital Key Wireless Charging Issue

For certain 2021-2023 BMW Z4 models, a significant issue involves the wireless charging tray's inability to recognize the removal of a digital key (Key Card or mobile phone). This problem, detailed in BMW Service Information Bulletin SIB84 03 23 and another bulletin with the same ID, violates a federal requirement. BMW issued a delivery stop and a subsequent Non-Compliance Recall to address this. A software update is necessary to resolve the issue, ensuring the vehicle's compliance and correct digital key functionality.

Engine Jolt While Accelerating

BMW has identified an issue in certain 2021-2023 models, including the Z4, where an engine jolt may occur during light acceleration, especially after the engine has run for an extended period in hot ambient conditions. This concern is detailed in BMW Service Information Bulletin SIB120123. Owners experiencing this symptom should consult their dealership for diagnosis and potential remedies.

What BMW Z4 Owners Should Do

If you own a 2021-2024 BMW Z4, here are some steps you can take:

  • Monitor for Symptoms: Pay attention to any unusual noises from the convertible top, difficulties with its operation, issues with your digital key's recognition in the wireless charging tray, or unexpected engine behavior like jolting during acceleration.
  • Check for Warning Lights: Be aware of any dashboard warning lights or specific fault messages, such as the convertible top fault code 805090.
  • Contact Your Dealer: If you experience any of the issues described in these BMW Z4 service bulletins, schedule an appointment with your authorized BMW dealership. Provide them with a clear description of the symptoms.
  • Inquire About TSBs: When speaking with your dealer, you can reference the specific Service Information Bulletin (SIB) numbers mentioned (e.g., SIB 54 03 24, SIB84 03 23, SIB120123) to help them quickly identify the relevant repair procedures.

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