Microphone Testing Procedure for Denso CP1 Infotainment Systems – 2020-2021 Subaru Legacy & Outback

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Bulletin Number: 15-275-20; Date: 11/10/20 Page 1 of 5 Continued… CAUTION: VEHICLE SERVICING PERFORMED BY UNTRAINED PERSONS COULD RESULT IN SERIOUS INJURY TO THOSE PERSONS OR TO OTHERS. Subaru Service Bulletins are intended for use by professional technicians ONLY. They are written to inform those technicians of conditions that may occur in some vehicles, or to provide information that could assist in the proper servicing of the vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do the job correctly and safely. If a condition is described, DO NOT assume that this Service Bulletin applies to your vehicle, or that your vehicle will have that condition. Subaru of America, Inc. is ISO 14001 Compliant ISO 14001 is the international standard for excellence in Environmental Management Systems. Please recycle or dispose of automotive products in a manner that is friendly to our environment and in accordance with all local, state and federal laws and regulations. NUMBER: 15-275-20 DATE: 11/10/2020 APPLICABILITY: 2020-21MY Legacy and Outback SUBJECT: Microphone Testing Procedure for Denso CP1 Infotainment Systems INTRODUCTION: This Service Information Bulletin provides a testing procedure for the microphone used in Denso CP1 infotainment systems. The procedure is to be used as a diagnostic tool for customer concerns related to microphone operation. This testing is performed after accessing Dealership Mode and is applicable to units installed with Version 1 or Version 2 software. This procedure will be used temporarily until Version 3 has been released and installed. Because of an inadequate gain setting, the microphone indicator level currently shows either just one or no “bars” at all when 2 or 3 bars should be displayed, especially when the input sound is brief (short). SERVICE PROCEDURE / INFORMATION: REMINDER: Customer satisfaction and retention starts with performing quality repairs. Step 1) Access Dealership Mode by pushing and holding down both passenger (right) side A/C Up/ Down Temperature buttons while pressing the Tune button 6 times. SERVICE INFORMATION BULLETIN ATTENTION: GENERAL MANAGER q PARTS MANAGER q CLAIMS PERSONNEL q SERVICE MANAGER q IMPORTANT – All Service Personnel Should Read and Initial in the boxes provided, right. © 2020 Subaru of America, Inc. All rights reserved. Bulletin Number: 15-275-20; Date: 11/10/20 Page 2 of 5 Step 2) From the Dealership Mode menu, select System Information then, from the System Information menu, select Version Information. Step 3) The Version Information list will display the MSOC / Version Number. Continued… Bulletin Number: 15-275-20; Date: 11/10/20 Page 3 of 5 Continued… • If the Version Number is OTHER THAN a Version Number shown in the table below, proceed to Step 4. • If the Version Number is included in the table, diagnose the microphone per the applicable Service Manual procedure as the following test procedure is not compatible with these MSOC / Version Numbers. Step 4) Press BACK 2 times to return to the Dealership Mode menu. Bulletin Number: 15-275-20; Date: 11/10/20 Page 4 of 5 Continued… Step 5) From the Dealership Mode menu, select Function Check. Step 6) From the Function Check menu, select Microphone. The Microphone indicator screen (bars) will be displayed. Step 7) Using the alarm sound (or ringer) of a smartphone, test the microphone operation and monitor the bars on the display: a) Make sure the silent mode of the smartphone is turned OFF. b) Set the alarm volume level to maximum. c) Activate the alarm sound. d) Hold the smartphone within half an inch of the microphone for at least 10 seconds. Bulletin Number: 15-275-20; Date: 11/10/20 Page 5 of 5 TEST: Does the Microphone display show 2 or more bars? The number of blue bars represent signal level. • YES- The microphone is operating normally. • NO- Diagnose the microphone system per the applicable Service Manual procedure. 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.

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