1. Attachments are working again! Check out this thread for more details and to report any other bugs.

car has wrong date

Discussion in 'Gen 4 Prius Main Forum' started by krmcg, Jan 24, 2020.

  1. krmcg

    krmcg Lowered Blizzard Pearl Beauty

    Joined:
    May 15, 2008
    2,592
    2,388
    0
    Location:
    Whittier, CA
    Vehicle:
    2016 Prius
    Model:
    Four
    This is the second time it happened, so I wasn't as freaked out as I was the first time.
    My battery was disconnected by the dealer to perform the Toyota Safety Connect recall. When the battery gets disconnected, the only data that is lost is time of day (clock needs to be reset).
    I reset the time and noticed that the date was off by one day. My car was telling me that it was yesterday.
    I double-checked AM/PM and went around the digital clock a couple of times - but nothing would advance the date to the correct setting.
    The solution? Patience.
    After a day or two of three, the date magically fixed itself. Must be a software setting that keeps people from mis-setting the calendar for nefarious reasons.
     
    Mambo Dave likes this.
  2. kithmo

    kithmo Couch Potato

    Joined:
    Apr 25, 2010
    2,404
    2,773
    47
    Location:
    South Yorkshire, UK
    Vehicle:
    2016 Prius
    Are you on 12 hour clock, it could be changing at mid day instead of midnight.
    Edit: scrub that, I just noticed you said you checked the AM/PM setting. Have you tried it on 24hr mode ?
     
    #2 kithmo, Jan 25, 2020
    Last edited: Jan 25, 2020
  3. krmcg

    krmcg Lowered Blizzard Pearl Beauty

    Joined:
    May 15, 2008
    2,592
    2,388
    0
    Location:
    Whittier, CA
    Vehicle:
    2016 Prius
    Model:
    Four
    It fixed itself. No issues anymore - that was the point of the post.
     
  4. kithmo

    kithmo Couch Potato

    Joined:
    Apr 25, 2010
    2,404
    2,773
    47
    Location:
    South Yorkshire, UK
    Vehicle:
    2016 Prius
    Strange thing this electrickery stuff :D
     
    alanclarkeau and krmcg like this.
  5. Colorado Boo

    Colorado Boo Active Member

    Joined:
    Jun 23, 2021
    307
    201
    8
    Location:
    Monument, Colorado USA
    Vehicle:
    2021 Prius
    Model:
    LE AWD-e
    I noticed all of my trip data was for January so I think my car is off by an entire month. The last time the battery was disconnected was in November when the collision repair place fixed it after I hit a deer.
    I've checked every setting I could find and can't find anywhere to change the computer date....pretty frustrating...I don't want to have to disconnect the 12-volt to force it to reprogram itself.
     
    Mambo Dave likes this.
  6. Muhammad Alam

    Muhammad Alam New Member

    Joined:
    May 19, 2022
    1
    0
    0
    Location:
    L6P 4J1
    Vehicle:
    2017 Prius
    Model:
    N/A

    I have the same issue. Did disconnecting the battery force the car to reprogram itself?
     
  7. FuelMiser

    FuelMiser Senior Member

    Joined:
    Jun 29, 2008
    1,263
    858
    0
    Location:
    Monument, CO
    Vehicle:
    2016 Prius
    Model:
    Touring
    I have no idea if disconnecting the battery will solve the date problem, but you should not be afraid of disconnecting the 12V. Just remember to disconnect the Negative terminal only, and while it is off, make sure it does not touch any other metal part. Wrap it in a rag to make sure. Then go inside the car and actuate the Power button. Nothing will happen, of course, but it might release some energy stored in the circuits. I don't know. I'm not an electrical engineer, but it certainly won't hurt anything.
     
  8. AzWxGuy

    AzWxGuy Weather Guy

    Joined:
    May 22, 2011
    959
    485
    0
    Location:
    Tucson, AZ
    Vehicle:
    2021 Prius
    Model:
    Limited
    On page 105 of the Owners Manual it discusses changing the date setting. A couple prior pages talks about setting the time. After a year of driving I discovered my car was a whole year ahead. When I changed it back I lost a whole year of fuel prices and mpg. :(
     
  9. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    54,464
    38,101
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Do 3rd gens have that too? I seriously have no clue, lol. Strictly gas receipts and spreadsheet here.
     
    Pulse07 likes this.
  10. AzWxGuy

    AzWxGuy Weather Guy

    Joined:
    May 22, 2011
    959
    485
    0
    Location:
    Tucson, AZ
    Vehicle:
    2021 Prius
    Model:
    Limited
    My 2011 didn't have this function. It did have a maintenance section where you could put in dates I think. Didn't use it. Every time I gas up and make the car ready I get prompted to enter the fuel price per gallon. It will then tabulate expenses monthly. I track my expenses separately anyway, but I suppose I could compare notes with my car. I have not found a way to save off that information, which would be nice.
     
    Mendel Leisk likes this.
  11. Mambo Dave

    Mambo Dave Active Member

    Joined:
    Jul 5, 2019
    640
    305
    0
    Location:
    33312
    Vehicle:
    2019 Prius
    Model:
    L Eco
    So I just changed my battery out, and on the first start-up it asked me to set the date. Except no control would move the date function that I found. Eventually I hit something that made that menu go away (not what I wanted to happen), but it's been off for a week (by one day) now.

    Today is the 25th, and I drove to work and to lunch. It says it is the 24th.

    [​IMG]
     
    #11 Mambo Dave, May 25, 2022
    Last edited: May 25, 2022
  12. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    54,464
    38,101
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    At least not as bad as Honda: you disconnect your battery, and the effing radio won't work, till you enter a special code. Every new car sold has a little tag with the code, but you know how that goes. In the States I think there's a website you could use to answer some security questions, get the code. But Canada, SOL...

    It's supposedly to thwart thieves. I put a sticker in the glove box with the code.
     
    Mambo Dave likes this.