'15 no start sometimes, driving me crazy - Subaru Outback - Subaru Outback Forums
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post #1 of 10 (permalink) Old 05-19-2019, 12:30 PM Thread Starter
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'15 no start sometimes, driving me crazy

Already replaced the original lame battery at 3 years and 40k miles because it died as most have. Now at 54k miles and the new battery has not failed me once until 3 weeks ago. Let's be clear it's likely not the battery. 4 times now we have been out driving for at least an hour and then the car will sit for between 15 minutes to up to 4 hours before attempting to restart. Zero warning lights, zero terminal corrosion, cool weather, no battery drains that I'm aware of, etc. Put key in, turn key, and nothing, not even a solonoid click. Jump start and it starts right up. After the third time I removed the battery, took it to a local auto electric place where they tested it for 24 hours and they said it was good as new which it should have been. 3 days later same issue. So is it a key issue, switch issue, gear shift issue, or what's your guess? Really don't want to take it someone or the dealer (1 hour away). I'm stubborn that way.


Last edited by Tahoe; 05-19-2019 at 12:34 PM. Reason: Misspelled
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post #2 of 10 (permalink) Old 05-19-2019, 01:25 PM
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Bit off the wall, but, when the key is turned to Start and nothing at all happens, leave it at On, and turn the steering wheel.

When the car is parked, a steering wheel lock engages to prevent it from turning. If, when the key is turned to Off the steering wheel is under tension, and the lock engages, it might not disengage when the key is inserted and turned to On again, because the plunger is binding against the steering wheel. Turning the wheel allows the plunger (or whatever it is) to release. When the key is then turned to the next (start) position, it works.

(I'm thinking that even in that case with the jump start, between the initial try and getting out, connecting the jumper and then back in to try, the steering wheel might have been moved, and, it works.)

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post #3 of 10 (permalink) Old 06-17-2019, 01:02 PM Thread Starter
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Here we are more that a month later and the problem continues. No apparent reason and always happens at the worst time. Happening about once per week and again this morning. I'm not 100% sure but seems like it could be an immobilizer issue. Absolutely no cranking when trying to start, but we are seeing a flashing of the lock symbol, plus the clock resets and the windows need to be reset on pass side. I bought a battery jump starter and have used it at least 8 times so far. If we jump the battery it starts right up. Battery is pretty new and has been checked at an auto electric shop, no corrosion, charge system working just fine, etc. Next stop I guess is the dealer but they're an hour away, and I haven't had the best of luck with them regarding other issues. I've had zero issues with our 02 WRX or 07 Imprezza wagon with 185k, but this Outback with only 54k has been a royal pain.

'15 Outback (Lapis Blue)
'02 WRX (Blaze Yellow)
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post #4 of 10 (permalink) Old 06-17-2019, 01:54 PM
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any aftermarket electronics? dash cam or ????

you need to measure 'dark current' I think.

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post #5 of 10 (permalink) Old 06-17-2019, 01:58 PM
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Quote:
Originally Posted by Tahoe View Post
Already replaced the original lame battery at 3 years and 40k miles because it died as most have. Now at 54k miles and the new battery has not failed me once until 3 weeks ago. Let's be clear it's likely not the battery. 4 times now we have been out driving for at least an hour and then the car will sit for between 15 minutes to up to 4 hours before attempting to restart. Zero warning lights, zero terminal corrosion, cool weather, no battery drains that I'm aware of, etc. Put key in, turn key, and nothing, not even a solonoid click. Jump start and it starts right up. After the third time I removed the battery, took it to a local auto electric place where they tested it for 24 hours and they said it was good as new which it should have been. 3 days later same issue. So is it a key issue, switch issue, gear shift issue, or what's your guess? Really don't want to take it someone or the dealer (1 hour away). I'm stubborn that way.
It still can be a weak cell in the battery.

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post #6 of 10 (permalink) Old 06-17-2019, 02:20 PM
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Easy stuff first. Are the battery connections clean and tight? A clamp left loose after battery replacement can cause symptoms exactly like these.
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post #7 of 10 (permalink) Old 06-17-2019, 04:22 PM Thread Starter
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It still can be a weak cell in the battery.

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Could be, but unlikely, battery load checked just fine.

'15 Outback (Lapis Blue)
'02 WRX (Blaze Yellow)
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post #8 of 10 (permalink) Old 06-17-2019, 05:47 PM
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Has the charging system update been applied to this car? I forget the TSB number.

When you attempt to start the car, do you get dashboard lights even those times when it doesn't start?

Has the charging system been checked?
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post #9 of 10 (permalink) Old 06-17-2019, 08:04 PM Thread Starter
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All connections checked, charge system checked, battery load checked, all lights come on as normal when starting, no aftermarket updates. Didn't know about TSB will check with dealer as this seems to be my last resort.

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post #10 of 10 (permalink) Old 06-17-2019, 08:22 PM
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It's your battery, simplest explanation is usually the correct one

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