NEW HK Headunit Update Available - 5th Gen Subaru Impreza Forum
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post #1 of 234 (permalink) Old 08-05-2018, 08:11 PM Thread Starter
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NEW HK Headunit Update Available

On July 25th, the latest TSB that is supposed to solve all of the head unit issues was released and is now available for an upgrade at your local dealer. Reference TSB 15-211-17r. It will install software version U0.18.22.20 on all HK head units so make your appointment and get-r-done!
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Last edited by securityguy; 08-05-2018 at 08:14 PM.
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post #2 of 234 (permalink) Old 08-05-2018, 08:15 PM Thread Starter
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Bulletin Number: 15-211-17R; Revised 07/25/18 Page 4 of 17
• Operation of the head unit after switching the ignition off and back on has been revised:
PREVIOUS Version: The head unit power is turned OFF by pressing the Power/Volume knob for 4 or more seconds. On the next ignition ON, the display remains OFF / black while the audio begins playing automatically. This was the prior characteristic operation.
NEW Version: The head unit power is turned OFF by pressing the Power/Volume knob for 4 or more seconds. On the next ignition ON, the display remains OFF / black and the audio will also be OFF until the Power/Volume knob is pressed to turn the head unit back ON.
NOTE:
• The Mute function of the Power / Volume knob (a brief press and release of the Power / Volume knob to mute audio output) is unchanged.
• A “system reboot” function is initiated by pressing and holding the Power / Volume button for 10 seconds. This feature was included as part of the previous (11/2017) software update.
• An enhancement of Voice Recognition feature has been made for improved HVAC system interface and recognition of temperatures requested in Fahrenheit instead of Celsius. EXAMPLE: “Set temperature to 75.” With the previous version, the system interpreted “75” as degrees Celsius which would have been 167 degrees Fahrenheit and outside system parameters. As a result, there was no response from the HVAC system.
Additional Symptoms and Enhancements addressed by previous updates and also included in this latest (July 2018) update:
1- No streaming audio. When using the Pandora® app, there is no audio output.
Continued...
Bulletin Number: 15-211-17R; Revised 07/25/18 Page 5 of 17

2- “Media is loading” is displayed on the screen but, the media never completes loading.
3- The screen freezes when the STARLINK screen is displayed.
NOTE: The following conditions were addressed in the previous software version update (and WTN-74R) but, this one update incorporates all prior updates.
1- Radio station presets disappear (touch screen buttons return to “Initializing”).
Continued...
Bulletin Number: 15-211-17R; Revised 07/25/18
Page 6 of 17

2- STARLINK “Telematics Service in Progress” screen freezes.
3- Apple Car Play / Android Auto function does not operate (“No Device Connected”).
4- The complete guidance route can be displayed.
5- A Longitude and Latitude search feature has been added.
6- A “Beep” notification feature has been added for driving time and rest periods.
For reference, the previously released WTN-74R symptoms are also provided below. The main purpose of WTN-74R was to address display screen freeze-up during Back-Up Camera display (when the shifter is in “R”). In addition, the screen may also freeze when either the Subaru STARLINK or Disclaimer Caution / I Agree screen is displayed.
Continued...
Bulletin Number: 15-211-17R; Revised 07/25/18 Page 7 of 17

The previously released WTN-74R updates also addressed these additional operational conditions:
1) After switching the vehicle (ACC or IGN) on, the display screen goes black with no audio output and the hard key buttons are illuminated (on solid, or flashing / blinking).
2) Time of day displayed in the MFD (Multi-Function Display) is incorrect and the arrival time displayed in Navigation units is also incorrect.
3) The time in the MFD automatically reverts to a “default” setting, even after setting the time using “Manual” mode.
4) Audio volume goes to maximum automatically after one click of the volume up button on the steering wheel. In some cases, this condition may also occur without input from the operator. Maximum volume is also displayed on the screen.
Continued...
Bulletin Number: 15-211-17R; Revised 07/25/18 Page 8 of 17

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post #3 of 234 (permalink) Old 08-05-2018, 10:23 PM
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Looks like I'm heading to my Subaru dealership this week... get er done!
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post #4 of 234 (permalink) Old 08-06-2018, 09:34 AM
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This is great to know and really helpful. Thanks for the heads up.

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post #5 of 234 (permalink) Old 08-06-2018, 10:42 AM
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Well dammit, I was just there end of last week!

I'll definitely get this done next time unless someone can dig up a copy of the upgrade files
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post #6 of 234 (permalink) Old 08-06-2018, 11:10 AM
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Its simple to do yourself if so inclined.
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post #7 of 234 (permalink) Old 08-06-2018, 12:54 PM
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Quote:
Originally Posted by altitude909 View Post
Its simple to do yourself if so inclined.
Sure, but last I knew Subaru was being a lot more stingy with the files so I haven't seen a source for the recent versions.

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post #8 of 234 (permalink) Old 08-06-2018, 01:26 PM
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Exclamation Nice to know ...

This would have been nice to know (eg, to reset with Android Auto) after last November's update, instead of turning the engine off & waiting three minutes:
Quote:
Originally Posted by securityguy View Post
...
• A “system reboot” function is initiated by pressing and holding the Power / Volume button for 10 seconds. This feature was included as part of the previous (11/2017) software update.
This is also nice, but a better solution would be to simply power up with the audio muted, if it was muted when powered down (like, you know, radios have worked for the last century):
Quote:
Originally Posted by securityguy View Post
• Operation of the head unit after switching the ignition off and back on has been revised:
PREVIOUS Version: The head unit power is turned OFF by pressing the Power/Volume knob for 4 or more seconds. On the next ignition ON, the display remains OFF / black while the audio begins playing automatically. This was the prior characteristic operation.
NEW Version: The head unit power is turned OFF by pressing the Power/Volume knob for 4 or more seconds. On the next ignition ON, the display remains OFF / black and the audio will also be OFF until the Power/Volume knob is pressed to turn the head unit back ON.
A real problem prior to last November's update; since then, just selecting another input & then reselecting the desired media, works. Hopefully, this fixes that:
Quote:
Originally Posted by securityguy View Post
...
2- “Media is loading” is displayed on the screen but, the media never completes loading.

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post #9 of 234 (permalink) Old 08-06-2018, 01:54 PM
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I'm currently at the dealership and they're working on the update. Apparently, they're having problems downloading the software from Subaru's site...
They did confirm there is an update available.

We'll see how this goes.
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post #10 of 234 (permalink) Old 08-06-2018, 02:51 PM
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Update done!
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