denokarter Posted November 28, 2017 Share Posted November 28, 2017 Hi guys Here in Canada we tend to have some cold winters as you might know , every morning my car takes 2 to 3 cranks to start, just past my warranty i believe im at 85 000km . ( not miles) Im thinking if it was the battery it shouldn't crank at all , if its the starter it wouldn't crank ...could be the alternator ? Once the car is driven and engine is warm, it starts right away any suggestions ? Link to comment Share on other sites More sharing options...
chowser51 Posted November 28, 2017 Share Posted November 28, 2017 Battery is old. Mine will not survive this winter. What is the voltage reading when the car is running? Mine stays under 13V. My daughter killed the battery last year which required a major jump start and it hasn’t been the same since. Start your car. Leave it in park. Hold done the home button and tap the audio/tune button five times. I think battery voltage is under the second menu option. —- Function check/setting Then Vehicle signal Link to comment Share on other sites More sharing options...
denokarter Posted November 28, 2017 Author Share Posted November 28, 2017 Battery is old. Mine will not survive this winter. What is the voltage reading when the car is running? Mine stays under 13V. My daughter killed the battery last year which required a major jump start and it hasn’t been the same since. Start your car. Leave it in park. Hold done the home button and tap the audio/tune button five times. I think battery voltage is under the second menu option. will try that tonight thank you ! Link to comment Share on other sites More sharing options...
ammcinnis Posted November 28, 2017 Share Posted November 28, 2017 Im thinking if it was the battery it shouldn't crank at all , if its the starter it wouldn't crank ...could be the alternator ? ... any suggestions ? Dead battery = No crank. Weak battery (i.e. low charge, low voltage) = Slow crank. There are at least two recent TSBs that address insufficient battery charging in 2015-2017 Legacys and Outbacks, particularly when used primarily in town for short trips. The "fix" involves a simple update to the ECU firmware, performed by the dealer. I had my 2015 Legacy 2.5 updated just yesterday. Test: After sitting overnight, the voltage measured at the battery terminals with no load (i.e. doors closed, engine off) should be approximately 12.6 volts. If it's in the range of 12.0-12.2 volts (or lower), you are definitely a candidate for 1) the firmware update, 2) a new battery, or both. "If you don't know where you're going, any road will take you there." ~ The Cheshire Cat (Alice in Wonderland) Link to comment Share on other sites More sharing options...
denokarter Posted November 28, 2017 Author Share Posted November 28, 2017 Dead battery = No crank. Weak battery (i.e. low charge, low voltage) = Slow crank. There are at least two recent TSBs that address insufficient battery charging in 2015-2017 Legacys and Outbacks, particularly when used primarily in town for short trips. The "fix" involves a simple update to the ECU firmware, performed by the dealer. I had my 2015 Legacy 2.5 updated just yesterday. Test: After sitting overnight, the voltage measured at the battery terminals with no load (i.e. doors closed, engine off) should be approximately 12.6 volts. If it's in the range of 12.0-12.2 volts (or lower), you are definitely a candidate for 1) the firmware update, 2) a new battery, or both. Thank you for that information , any idea what the TSB number/reference is ? I’m going to take it to the dealership tomorrow Link to comment Share on other sites More sharing options...
denokarter Posted November 28, 2017 Author Share Posted November 28, 2017 Battery is old. Mine will not survive this winter. What is the voltage reading when the car is running? Mine stays under 13V. My daughter killed the battery last year which required a major jump start and it hasn’t been the same since. Start your car. Leave it in park. Hold done the home button and tap the audio/tune button five times. I think battery voltage is under the second menu option. —- Function check/setting Then Vehicle signal I tried this with no luck , my car doesn’t seem to have that battery voltage option Link to comment Share on other sites More sharing options...
rec630 Posted November 29, 2017 Share Posted November 29, 2017 Thank you for that information , any idea what the TSB number/reference is ? I’m going to take it to the dealership tomorrow http://legacygt.com/forums/showthread.php/battery-alternator-issue-only-32k-266413.html?t=266413 Link to comment Share on other sites More sharing options...
ammcinnis Posted November 29, 2017 Share Posted November 29, 2017 Originally posted by denokarter: ... any idea what the TSB number/reference is ?TSB 11-174-17R (June 2017, with several later revisions) TSB 11-176-17 (November 2017) N.B. These TSBs were issued by Subaru of America, so the update firmware may not be accessible in Canada. "If you don't know where you're going, any road will take you there." ~ The Cheshire Cat (Alice in Wonderland) Link to comment Share on other sites More sharing options...
YeuEmMaiMai Posted November 29, 2017 Share Posted November 29, 2017 get a cheap BT OBDII dongle and load app on your phone. It will show you a lot of information regarding your car and can help you isolate issues Link to comment Share on other sites More sharing options...
tornichoe Posted November 29, 2017 Share Posted November 29, 2017 I tried this with no luck , my car doesn’t seem to have that battery voltage option Think its the info button you need to touch and hold and then repeatedly press the audio/tune button that's right above it. Link to comment Share on other sites More sharing options...
ammcinnis Posted November 29, 2017 Share Posted November 29, 2017 Think its the info button you need to touch and hold and then repeatedly press the audio/tune button that's right above it. Based on his profile, his Legacy may be base trim, which has a Clarion head unit that is different than the Fujitsu Ten head units installed in higher trims. "If you don't know where you're going, any road will take you there." ~ The Cheshire Cat (Alice in Wonderland) Link to comment Share on other sites More sharing options...
denokarter Posted December 1, 2017 Author Share Posted December 1, 2017 Based on his profile, his Legacy may be base trim, which has a Clarion head unit that is different than the Fujitsu Ten head units installed in higher trims. This is correct Base trim , doesn’t seem to have battery voltage option Link to comment Share on other sites More sharing options...
DA_MAXX Posted December 9, 2017 Share Posted December 9, 2017 I recommend getting this TSB update done. I've only had my 15 for 2yr-4mo and have 45k miles on it. I took it in today to have the ECU updated. Turns out my battery is also bad. Service rep. stated that the original battery only had about 350 cca and the new one is 550 cca. He also stated that the original programming wasn't charging the battery when driving below 25-30 mph. Maybe that's why the battery died prematurely besides being incorrectly sized. Have a new battery and programming. Time will tell how well it does. Link to comment Share on other sites More sharing options...
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