2023-2024 BMW Headunit Resets from MyBMW App

BMW has released Service Information Bulletin (SIB) 65 12 24 to address an issue where the Central Information Display (CID) screen goes black and the Headunit High 3 (HU-H3) system sporadically resets in certain 2023-2024 BMW vehicles. This bulletin, issued on May 29, 2024, indicates that the function of the CID and HU-H3 typically becomes available again after a short period. This problem, which causes BMW headunit resets, may occur multiple times, especially during longer drives.

This technical service bulletin, SIB 65 12 24, highlights that the root cause of these intermittent headunit resets is unfavorable communication between the vehicle's HU-H3 and the MyBMW app installed on the customer's mobile device. Owners experiencing these symptoms, including the storage of fault code B7F8F9, are advised to update their MyBMW app to version 4.5.1 or higher.

Symptoms

Owners may observe the following symptoms indicating an issue with the Headunit High 3 (HU-H3) system:

• The Central Information Display (CID) screen goes black.
• The Headunit (HU-H3) resets sporadically.
• The system's function returns after a brief period.
• The issue may recur multiple times, particularly during extended driving periods.

Fault Codes / DTCs

When this issue occurs, the vehicle's diagnostic system may store the following fault code:

• B7F8F9 – "HU-H: Reset"

Diagnosis / Trigger Conditions

The intermittent BMW headunit resets are primarily triggered by communication problems between the vehicle's HU-H3 and an outdated MyBMW app. If the MyBMW app version on a linked mobile device is below 4.5.1, it can cause the HU-H3 to reset. This could affect any user with a BMW ID linked to the vehicle who uses the MyBMW app.

Important Warnings

Owners should be aware of a critical detail regarding the MyBMW app:

• "The MyBMW app does NOT automatically update on all mobile devices. The customer must manually update the app on their mobile device periodically from the mobile device app store." This means that simply having automatic updates enabled on your phone may not be sufficient. You must actively check and manually update the MyBMW app to version 4.5.1 or higher to prevent these intermittent headunit resets.

Repair Procedure Summary

The primary correction for the intermittent headunit resets is to ensure the MyBMW app on the customer's mobile device is updated to version 4.5.1 or higher. This procedure is outlined in SIB 65 12 24.

1. Check App Version: With the customer's permission, verify the version of the MyBMW app installed on their mobile device. This can be done by opening the MyBMW app, selecting the profile tab, and then pressing the "About My BMW app" link to view the version listed on the "About" page.
2. Update App: If the app version is below 4.5.1, the customer must manually update the MyBMW app from their mobile device's app store. Dealership personnel can assist customers with this process if needed.
3. Further Diagnosis: If the MyBMW app is already at version 4.5.1 or higher, or if updating the app does not resolve the issue, then standard diagnostic procedures should be followed.

Required Tools or Parts

• MyBMW app version 4.5.1 or higher: This is a software requirement for the customer's mobile device.
• BMW-approved battery charger/power supply: It is recommended to always connect a BMW-approved battery charger/power supply (referenced in SI B04 23 10) when performing any diagnostic or service work on the vehicle.

Owner Action

If you are experiencing intermittent headunit resets or a black CID screen in your 2023-2024 BMW, the first step is to check and update your MyBMW app.

1. Verify MyBMW App Version: Open the MyBMW app on your mobile device. Navigate to the profile tab and look for the "About My BMW app" link to find the installed version.
2. Update if Necessary: If your MyBMW app is not version 4.5.1 or higher, manually update it through your device's app store (Apple App Store for iOS, Google Play Store for Android).
3. Monitor: After updating, monitor your vehicle to see if the intermittent headunit resets cease.
4. Contact Dealer: If the problem persists after updating the app, or if you require assistance with the update, contact your authorized BMW dealer. This repair is covered under the terms of the BMW New Vehicle Limited Warranty.

Claim Information

This repair, involving the diagnosis and potential resolution of the Head Unit High HU-H (Nav Professional) software error or internal device fault, is covered under the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks.

• Repair Code: 6512580200
• Labor Operations:
  • 00 00 006: Carrying out vehicle test (Main work)
  • 00 00 556: Carrying out vehicle test (Plusposition work)
  • 61 21 528: Supporting voltage of the vehicle electrical system / recharging vehicle battery
  • 61 00 006*: Carrying out vehicle diagnosis, ABL (Work time)
  • 00 58 500*: Diagnosis Worktime Flat Rate

This information is provided to assist technicians in proper claim submission for work related to SIB 65 12 24.

Source: NHTSA ID 11000616