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Low battery warning V70-XC70 2015

Hello,
My XC70 wagon is displaying a "low battery" message, just as it was about two years ago. I ignored that intermittent warning for too long and eventually got stuck in the Trader Joe's parking lot. I ended up having to replace the battery and thought I'd be all set for years, but now it's starting again. I noticed today that the rear door didn't want to open as easily as it usually does, so maybe that's another sign of low power? Shouldn't a battery last longer, and shouldn't the alternator (if there is one) charge it whenever I drive the car? Maybe I don't put enough miles on it? Thank you!!








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    About low battery warning - Our 2012 XC70 that we purchased new and has always been serviced by our dealer has thrown low battery warnings on a regular basis.

    We have driven 75 miles to our daughters house and got a low battery warning.

    We have mentioned this issue at least 6 or 7 times under warranty and always were told that everything is OK.

    I fancy that the computers in todays cars have a bit of mysterious magic in them.



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    1. What brand of battery did you buy? Many inexpensive batteries are rebuilt, not new. You could have been sold a battery is funky

    2. What warranty does the battery have? Many aftermarket batteries have a use type warranty. If the battery is warranted for four years, and it fails after two years, you get another battery for 1/2 price.

    3 Batteries should have a tag that has punch outs for the month and year it was purchased - many sellers do not punch this out. What I do is write the date on the top of the battery with a magic marker and leave the receipt with my glove box papers - the slip should have guarantee info on it.

    4. Did the tech check for current being drawn out of the battery when everything is supposed to be off. There is a minor amount of draw to run the clock, etc. Some culprits are the glove box light, the trunk light, etc. If you check these bulbs and they are warm (or HOT) the light may be on all the time. ctually I had a Volvo 850 that removing the glove box bulb did not cure the glovebox problem, I had to disconnect the wiring to the switch to fix the problem.Also check your car at night to see if anything is lit.

    5 How often do you drive your car? How many miles per month?

    6. If this problem is really a problem to you, take it to a dealer, then if it happens again, they are a on the hook and will probably try to fix it again for no charge.



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      Hello James and thank you so much for taking the time to respond to this annoying question. You are very kind! I guess I'm spoiled because we've had Volvos over the last 45 years, and have always had batteries last much longer than this one. We never had to replace the battery in our last XC (a 2007 wagon that we bought in 2010). And in fact, I just looked up our records on this 2015 wagon (that we bought used in 2018) and we replaced the battery in 2020 and again last November, 2022. Not a great track record, right?

      I checked the battery today and it looks brand new. It shows NAPA 7548 on the label, but no date, no punch out card and no warranty info. I did look it up online and it seems there might be a 12-month warranty on it. I didn't buy the battery, but asked my mechanic to check the system last November and to replace the old battery if needed. He did that and told me the old one was a piece of junk which may have been the cause of the "low battery" warning. So this one isn't even a year old and causing the same warning. Could it really be two bad batteries in a row with something going on in the car's computer? I have yet to check on the glove box bulb, but watched when I turned off the car and shut the door, and it takes about 30 seconds for all the dash lights to go out.

      I don't drive too many miles these days and there are only about 53,000 miles on it. I know that short trips (3 miles to the grocery store) aren't quite adequate for an alternator to charge a battery right?

      As far as a dealer - I'm much more trusting of the mechanics I've known for years than I am of any dealer. I brought my 2007 wagon (the one where my brother ruined the transmission) to the dealer and I think they just parked it somewhere in the repair area for a couple of hours, maybe checked one or two easy things and then told me they took it out for a ride and it was fine. Thank you very much $200 later! It wasn't fine and I was lucky to be able to drive it to one of those CarMax dealers where I took what they offered and rushed home. Those guys didn't even drive it - just based their low price on the high mileage.
      So I'll continue to stay away from dealers unless all else fails.... But I will push to get something back on such a new battery if there's no other cause we can find for that warning.

      Thanks again!!



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        You or your mechanic can check how your alternator is charging using a basic multimeter. Also handy to have a voltage indicator that you can have plugged into your cig lighter/power socket. Just a few $. Available everywhere.
        https://www.amazon.co.uk/QQEG-Charger-Detector-Charging-Smartphone/dp/B07H2VDPNF?source=ps-sl-shoppingads-lpcontext&ref_=fplfs&psc=1&smid=A3LFIKKGE0YTTA



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    Yes, a battery should last longer than two years. But sometimes you get a bad one. And yes, your car has an alternator and a pretty expensive one at that.

    One easy thing you might try before looking into the battery/alternator is to reset the low battery warning.

    After a low battery condition is remedied the warning does not automatically reset. It has to be reset manually.

    But these cars can be a little quirky. Sometimes the warning gets triggered when there really is no problem.

    If you would like to try the reset here's what to do. It's a weird procedure but I am not making this up. I have done this in my own XC70 which is the same model year as yours.

    First, turn the ignition ON without starting the engine. In other words, do not put your foot on the brake pedal, just press the Start/Stop button until all the warning lights in the instrument cluster come on.

    Next, turn the headlights ON. That's ON, not AUTO. ON is one click to the right of AUTO. Make sure they are on low beam.

    Now press the rear fog light switch six times. On, off, on, off, on, off. This switch is at the lower left of the headlight switch. See page 103 of the owner's manual if you are not sure.

    Next, press the emergency flasher switch three times. On, off, on. The flashers are now on. Leave them so until the battery symbol on the upper right side of the instrument cluster (directly above the 'P' in the gear indicator) flashes three times.

    Turn off the emergency flasher and put the head light switch to Auto or off, wherever you normally like it.

    That's it. Barring any real problem the warning should not come on again.


    --
    '79 242, '84 DL 2 door, '80 DL 2 door, '89 DL Wagon, '15 XC70 T6 AWD



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      Hello Bulletproof and thank you for all this! It's too late for me to try now, but I'm going ahead with your suggestion in the morning. I'll let you know how it goes and whether I have to have the car towed afterwards! Haha! I appreciate your suggestion and if it works, I'll pass it on to the mechanic I rely on for all the regular maintenance. I'll keep you posted! Thanks!



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    My 2016 xc60 shows the same message unless I lock the car whenever I leave it. Maybe something about the satellite radio.



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      Hello Philip and thanks so much for your message. Sorry I didn't see it sooner. I don't have satellite radio, or at least I'm not paying for anything like that, but I will try to lock the car every time I leave it in the garage and see if that has any effect. It's sure to keep the chipmunks out, at least, right? I had that problem last summer when they came in and chewed all the wiring under the hood! Now I keep Altoids handy and sprinkle them into the engine from time to time. My younger brother had an old saying "If it ain't one thing....."



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