NHTSA ID Number: 10168563
Manufacturer Communication Number: 15-226-18R
Summary
This bulletin provides troubleshooting steps to follow when diagnosing customer concerns regarding USB functionality. Please start by completing the Harman Investigation Guide Questionnaire as it gathers important details which will help with diagnosis and will be required should the condition not be resolved by this troubleshooting. While completing the questionnaire, follow the question flow based on the customer concern. Answer each related question noting the results to each in detail while performing the diagnostics. Review the entire bulletin before beginning in order to understand the flow for the listed concern.
22 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
| SUBARU | ASCENT | 2019-2020 |
| SUBARU | BRZ | 2018-2020 |
| SUBARU | CROSSTREK | 2018-2020 |
| SUBARU | FORESTER | 2019-2020 |
| SUBARU | IMPREZA | 2017-2020 |
| SUBARU | LEGACY | 2018-2019 |
| SUBARU | OUTBACK | 2018-2019 |
| SUBARU | WRX | 2019-2020 |
| SUBARU | WRX STI | 2019-2020 |
INTRODUCTION:
This bulletin provides troubleshooting steps to follow when diagnosing customer concerns regarding USB functionality. Please start by completing the Harman Investigation Guide Questionnaire as it gathers important details which will help with diagnosis and will be required should the condition not be resolved by this troubleshooting. While completing the questionnaire, follow the question flow based on the customer concern. Answer each related question noting the results to each in detail while performing the diagnostics. Review the entire bulletin before beginning in order to understand the flow for the listed concern. If the concern you have is not listed, check the Service Manual “Infotainment (Diagnostics) – Diagnostics with Phenomena” section as a starting point.
SERVICE PROCEDURE / INFORMATION:
REMINDER: Customer satisfaction and retention starts with performing quality repairs.
1) Always confirm the condition as reported by the customer.
2) This section addresses USB detection symptoms.
a. Confirm the USB is recognized (USB icon appears) on the Media screen as shown in the figure below.
b. If the USB is not recognized, follow Service Diagnostic Mode from the Service Manual:
i. Turn the ignition switch to ACC.
ii. Press the “TUNE/SCROLL” button six times while pressing the “HOME” button.
1. SERVICE INSPECTION:
a. CONNECTION
i. On Service Menu, press “Connection” to display the list of items.
ii. OK: Each device is connected properly.
iii. NG: Connection is not established, or connection status (possibly including the related harness) is faulty.
NOTES:
- The USB connection showing “NG” when no USB device is connected to USB ports is normal.
- If the concern involves “CarPlay not working”, make sure a genuine Apple cable is used. In some cases, aftermarket cables may cause connection issues.
- If the concern involves “Android Auto not working”, try using another cable since Android phones do not require use of a genuine cable.
c. Do other USB devices work in the suspect vehicle? If yes, check the USB device’s operation in another like vehicle.
d. Please provide detailed information regarding the USB device (brand, device type, file system, types of files on device, etc.).
3) This section addresses issues related to Apple CarPlay and/or Android Auto not launching consistently due to poor connectivity to USB Media. Affected models and head units are:
New firmware was released during late 2017 to enhance connectivity for Auxiliary Terminal part numbers: 86257FL00A and 86257FL101 (MID, HIGH).
NOTE: The BASE model utilizes a different Auxilliary Terminal part number which is not affected.
How to determine if the Auxiliary Terminal is pre- or post-countermeasure (CM):
- CAREFULLY peel off the QR code / part number label.
- Check the Lot# as shown below. If the number is after “7411” it is post-CM.
4) If the above steps do not resolve the customer’s concern with USB functionality, complete a fresh Harman Investigation Guide Questionnaire documenting the customer’s concern and the results of each diagnostic step in this bulletin. If possible, capture a video of the condition then contact the SOA Techline to review the next steps. Techline will request you send the completed questionnaire, step-by-step bulletin test results and any videos of the condition.
APPLICABILITY: 2017-20MY Impreza
2018-20MY Crosstrek
2018-19MY Legacy and Outback
2019-20MY WRX and WRX STI
2019-20MY Ascent
2018-20MY BRZ
2019-20MY Forester
SUBJECT: Harman Audio / Infotainment: Troubleshooting
USB Functionality Concerns
WARRANTY / CLAIM INFORMATION:
For vehicles within the Basic New Car Limited Warranty period or covered by an active Subaru Added Security Gold plan, this repair may be submitted using the following claim information:
| Labor Description | Labor Operation # | Labor Time |
Fail Code |
H/U Type |
|---|---|---|---|---|
| HARMAN USB TROUBLESHOOTING | A850-873 | 0.5 | ZLI-43 | Base, Mid & High |
IMPORTANT REMINDERS:
- SOA strongly discourages the printing and/or local storage of service information as previously released information and electronic publications may be updated at any time.
- Always check for any open recalls or campaigns anytime a vehicle is in for servicing.
- Always refer to STIS for the latest service information before performing any repairs.
NUMBER: 15-226-18R
DATE: 08/21/18
REVISED: 11/15/19
https://www.nhtsa.gov/recalls?nhtsaId=10168563
https://static.nhtsa.gov/odi/tsbs/2019/MC-10168563-0001.pdf
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Open in new tab NUMBER: 15-226-18R
DATE: 08/21/18
REVISED: 09/05/18
https://www.nhtsa.gov/recalls?nhtsaId=10146468
https://static.nhtsa.gov/odi/tsbs/2018/MC-10146468-9999.pdf
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NUMBER: 15-226-18
DATE: 08/21/08
https://www.nhtsa.gov/recalls?nhtsaId=10144884
https://static.nhtsa.gov/odi/tsbs/2018/MC-10144884-9999.pdf
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Last update on 2021-01-25 / Affiliate links / Images from Amazon Product Advertising API
Last update on 2021-01-25 / Affiliate links / Images from Amazon Product Advertising API
