2025 BMW 5 Series / 7 Series Sky Lounge Sunshade Malfunction

Owners of certain 2025 BMW 5 Series, 7 Series, and M5 vehicles may experience a 2025 BMW Sky Lounge sunshade malfunction, where the sunshade fails to open or close. This issue can be intermittent and is addressed by BMW Technical Service Bulletin (TSB) SIB 54 04 25. The TSB outlines a software correction for the problem, ensuring proper operation of the Sky Lounge sunshade system.

Symptoms

The primary symptom of this issue is the Sky Lounge sunshade failing to operate correctly. Owners may notice that the sunshade "Sky Lounge sunshade does not open/close" or that its operation is intermittent.

Fault Codes / DTCs

When diagnosing the 2025 BMW Sky Lounge sunshade malfunction, technicians may find specific fault codes stored in the FZD (Roof Centre Function) control module. These codes indicate a problem with the electrical sunshade system:

Code	Description
0302A0-ESH	electrical sunshade: "No standardization system"
03029C-ESH	electrical sunshade: "No init because boundary conditions not valid (motor diver)"

Diagnosis / Trigger Conditions

The presence of fault codes 0302A0-ESH or 03029C-ESH in the FZD control module during a vehicle test confirms the issue. These codes point to a software-related problem affecting the electrical sunshade's ability to initialize or standardize its position.

Cause

The root cause of the 2025 BMW Sky Lounge sunshade malfunction is identified as a software error within the FZD (Roof Centre Function) control module.

Correction

To correct this software error, BMW recommends programming the vehicle using ISTA version 4.45.25 or higher. The required I-Level for the software update is G070-23-11-552 or higher. This update ensures the FZD control module operates correctly, resolving the sunshade issue.

Repair Procedure Summary

The repair involves a software update to the vehicle's control modules. The general steps are as follows:

1. Determine Current Software Level: A technician will first determine the vehicle's current I-Level using BMW's AIR or Key Reader/AWP applications.
2. Evaluate I-Level: If the vehicle's I-Level is below G070-23-11-552, the technician will proceed with programming. If the I-Level is already equal to or greater than G070-23-11-552, further diagnosis using ISTA may be required.
3. Program Vehicle: The vehicle will be programmed using ISTA version 4.45.25 or higher. This process automatically reprograms and codes all programmable control modules that do not have the latest software.

Required Tools or Parts

No new parts are required for this repair. However, it is crucial that a BMW-approved battery charger/power supply (referencing SI B04 23 10) is connected to the vehicle when performing programming. This ensures stable voltage during the software update process.

Important Warnings

Technicians are advised to "Always connect a BMW-approved battery charger/power supply (SI B04 23 10) when performing programming." This is a critical step to prevent potential issues during the software update.

Owner Action

If you are experiencing a 2025 BMW Sky Lounge sunshade malfunction, you should schedule an appointment with an authorized BMW dealership. The repair involves a software update, which is typically covered under warranty. No parts replacement is necessary for this particular issue.

Source: NHTSA ID 11019567