Infotainment System - MMI Screen Carrier Shudders/Noisy
91 MMI Screen Carrier Shudders/Noisy91 12 51
2028446/3
August 2, 2012
Supersedes Technical Service Bulletin Group 91 number 12 - 48 dated July 26, 2012 for reasons listed below.
Affected Vehicles
Condition
MMI screen carrier shudders, shakes, and/or is noisy during operation.
Note:
This bulletin only applies to vehicles with Navigation Plus (PR Number 8DY). For vehicles with Radio Plus, please follow standard diagnosis steps. The applicable vehicles can be clearly identified by the MMI Touch touchpad on the E380.
Technical Background
Incorrect tolerances with the carrier slide mechanism.
Production Solution
Improved carrier slide mechanism and new software.
Service
A replacement of the screen carrier potentially followed by an MMI software update is required to resolve this concern.
Note:
Please review this entire bulletin before proceeding to avoid damage the MMI components. If at any time it is unclear how to proceed, please contact TACS.
1. Replace the MMI display carrier with part number 4G8 857 346 E as per ELSA repair manual instructions.
2. Using GFF, determine the software level of the E380 controller. This can be accessed through Vehicle Self-Diagnosis >> On Board Diagnostic (OBD) >> 5F- Information Electronics 1 (Figure 1). It will be the third item on the list. If the software is below 0204; please continue with this bulletin. If the software is 0204 or above, no update is required and the rest of this bulletin does not apply.
3. As part of the update, wireless settings and paired devices will be deleted. All devices will need to be re-paired after the update, and all wireless settings restored to the customers settings. To access the Wireless Network Settings on the MMI (Figure 2), press TEL >> Settings >> Wireless network connection >> Wireless network settings. Record all settings so they can be re-entered at the end of the procedure.
4. Update the MMI software using update disc 8R0 906 961 BR and following the instructions in TSB 2028141, Generic instructions for updating MMI 3G / MMI 3G+ software and navigation data.
Note:
Some earlier model year 2012 vehicles, or vehicles equipped with Bose sound systems may experience certain modules that will not update properly during Step 16 of TSB 2028141. If this should occur, either choose Cancel (Figure 3), or Skip device (Figure 4), depending on the type of error. Do not choose Cancel update, as this may cause the software update to fail entirely. After the update is finished and the summary page is shown, select Retry at the bottom of the list if it is available to attempt to update the modules again. If Retry is grayed out, then Figure 3. A device requiring a Cancel selection. the software update was successful, so select Continue" to proceed. In some cases Retry may have to be repeated two or three times to get all modules to update successfully.
5. Verify that the software update has been completed successfully by accessing the logging page (Figure 5). To access this screen, proceed to step 8 in TSB 2028141 and press the lower left softkey. A successful update will show the date the update was performed, the software that was installed (HN+R_US_AU_K0566_X), with OK listed on the right. The X may be one of several different numbers. If K0566_X does not have any rows with OK, the update must be Figure 5. Software update log showing a successful retried until it is successful.
Tip: If the update must be performed two or more times due to modules not updating correctly, a screenshot of the software update log is required (Figure 6). This should be kept on-hand for warranty auditing purposes. To take a screenshot, insert an SD Card into slot 1 and press and hold the left and right arrow keys at the same time. All 4 softkeys will flash when the screenshot is taken. A screenshot should be taken of each page in the logging display.
6. Perform SVM code 3GPUS566 to establish a reference for this vehicle, and add the test plan to clear DTCs created from the update. If any errors are encountered while performing the SVM code, please call TACS and attach the Diagnostic log showing the error.
7. Using the recorded Wireless network settings from Step 3, re-enter the values to restore the settings to the customers selections. Inform the customer that WiFi and Bluetooth devices will need to be reconnected to the vehicle.
Warranty
Required Parts and Tools
Additional Information
The following Technical Service Bulletin(s) will be necessary to complete this procedure:
^ TSB 2028141, Generic instructions for updating MMI 3G / MMI 3G+ software and navigation data.
All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service manuals for the latest information.