Harman Audio / Infotainment: Troubleshooting Apple CarPlay and Android Auto Connectivity Concerns – 2017-2019 Subaru

NUMBER: 15-220-18R
DATE: 03/08/18
REVISED: 09/05/18

APPLICABILITY: 2017-2019MY Impreza
2018-19MY Crosstrek
2018-19MY Legacy and Outback
2019MY WRX and WRX STI
2019MY Ascent
2018-19MY BRZ
SUBJECT: Harman Audio / Infotainment: Troubleshooting Apple CarPlay and Android Auto Connectivity Concerns



This bulletin provides troubleshooting steps to use when diagnosing concerns of the Apple CarPlay and / or Android Auto feature not connecting or launching properly when a compatible device is connected to the head unit.



1) Confirm the condition as reported by the customer. Information located in the Harman Investigation Guide-Questionnaire may be required to understand fully how to duplicate the condition. The customer’s phone will most likely also be required unless a similar phone is available for testing.

2) Verify the device being used is compatible with the head unit by checking the listings on Subaru.com under Bluetooth Compatibility using the following link: https://www.subaru.com/owners/index.html

3) Verify the cable being used to connect the device is a OEM (e.g. Apple, Samsung, Motorola, etc.) -supplied or a certified OEM / Manufacturer-compliant product.

4) Verify the software version of the head unit and if it is not the most current, update it using the most recent version available. See TSB 15-211-17R for the complete Service Procedure to update the head unit software if needed.

5) Confirm the device’s operating system; CarPlay (iOS) or Android Auto (OS) versions are up to date.

6) Confirm the CarPlay or Android Auto feature is enabled on the device without any Restrictions by following the steps below:

For Apple CarPlay For Apple CarPlay:

  • Confirm Restrictions have been disabled by going to: Settings > General > Restrictions.  If the slider is green as shown in the illustration below, CarPlay is NOT restricted (CarPlay is operational).
  • If the slider is to the left (slider is gray), CarPlay is restricted.  Either move the slider to the right (green) or press Enable Restrictions (you may be required to create / use a password to use the Enable Restrictions function).


For Android Auto For Android Auto:

Confirm the Android Auto feature on the device is set to accept new car connections.

  • Open Android Auto > Open the Menu on the top left > Settings > Connected Cars
  • Enable “Add new cars to Android Auto” by moving the slider to the right as shown in the image to the left.

7) If the N/G condition persists after performing the instructions supplied in steps 1-6 above, try using another known-good certified OEM / Manufacturer-compliant connecting cable in the customer’s vehicle to rule out a faulty connecting cable. If the N/G condition persists, the connecting cable is likely to be OK.

8) Try the device and (confirmed OK) connecting cable in a known good vehicle.

9) If CarPlay / Android Auto launches and operation is OK, swap the USB hub / cable from the known good vehicle into the customer vehicle and check for proper operation. If OK, replace the USB hub / cable.

10) If the N/G persists, swap the head unit with a known good one and if a faulty head unit is identified, replace it using the Harman exchange unit program.

IMPORTANT CAUTION:  Always disconnect the Telematics Data Communication Module (DCM) BEFORE any swapping of head units.  DCMs must NEVER be swapped or the customer’s services will not function and DCM replacement may be required to resolve.

11) If the above steps do not resolve the customer’s concern with CarPlay/ Android Auto function, 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 for next steps.  Techline will request you send the completed questionnaire, step by step bulletin results and any videos of the condition.



For vehicles within the Basic New Car Limited Warranty period or covered by an active Subaru Added Security Classic or Gold plan, this repair may be submitted using the following claim information:

Labor Description Labor Operation # Labor
ZRN-43 Plus / Mid
ZRO-43 High (w/ Navi)



  • 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: 15-220-18R
DATE: 03/08/18
REVISED: 09/05/18



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