Battery replacement on new LE 2020?

Discussion in 'General Supra Topics' started by JggyMKV, Sep 6, 2019.

  1. s219

    s219 Well-Known Member

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    It won't matter at this point -- you will need the dealer to clear the error code for the message to go away.

    Hopefully the message will go away when the code is cleared. Be careful, don't assume they will replace under warranty if your camera install caused the problem. The batteries are expensive.
     
  2. s219

    s219 Well-Known Member

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    It's likely a BMW battery given that everything else in the car is a BMW part or derived from a BMW part. All the body control modules are BMW so I assume they used the same smart battery system as you described.
     
  3. RRKnight

    RRKnight Well-Known Member

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    The OP said he didn't do any electronic install. I will post back once the dealer replaces my battery. The battery will take 4 weeks to get.
     
  4. OP
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    JggyMKV

    JggyMKV Active Member

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    Why does it take 4 weeks? Is it a specific battery?
     
  5. jtsang25

    jtsang25 Well-Known Member

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    I needed a replacement part and was told there isnt even a complete parts list to order from yet. So no price can even be given.
     
  6. RRKnight

    RRKnight Well-Known Member

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    No part list available yet on Toyota system to order the part. It's being updated this week and then they can order it from Kentucky.
     
  7. 084runnerltd

    084runnerltd Well-Known Member

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    FYI...

    03502C61-7992-4A47-A436-9058C644C4DB.jpeg
     
  8. thedude

    thedude Well-Known Member

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    Yup. Sounds like the BMW system. Without a reset, the ECU still thinks the battery is weak and draws hard on it. I have seen old BMW forum posts for guys who used off the shelf batteries and they were sucked dry in about one year.
     
  9. thedude

    thedude Well-Known Member

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    I’ve been reading the manual. Is it possible that the car has been left accidentally in standby state instead of idle state? Also, it appears that the 12v plug is always drawing power and can drain the battery if an accessory/device is left plugged in.
     
  10. 084runnerltd

    084runnerltd Well-Known Member

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    Good point, my dealer told me at delivery to always lock the car as some systems continue to draw on the battery and if left for a few days my drain the battery.

    (Dealer had a list of about 5 items with bulletin points to tell me. Basically, was how to open the hood, how to properly close it, the break-in period, launch control and to always lock the car to prevent a dead battery)
     
  11. thedude

    thedude Well-Known Member

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    #26 Sep 8, 2019
    Last edited: Sep 8, 2019
    It’s interesting that this car is more like a PC than a car with regard to power. It has multiple modes and it doesn’t behave like other cars with a start/stop button.

    As others have said in threads here, to make sure you get to idle mode (off):

    -engage the parking brake -AFTER- switching the engine off with the start/stop button

    Or

    -hold the power button for the stereo after the engine is off.

    Or

    -there’s also a menu setting that will establish idle state when a door is opened.


    This seems kludgy to me, I wonder what struggles led to such peculiar extra steps.
     
  12. s219

    s219 Well-Known Member

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    There may be a setting in iDrive to power everything off when the driver's door is opened (after shutting off engine). My M40i has a few ways to do this, but I set it to power off as soon as I open the door. My other BMWs did not have that setting and would only power down when the door was locked or the keyfob went out of range.
     
  13. thedude

    thedude Well-Known Member

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    Yes.

    I mentioned it in my earlier post but here’s the excerpt from the manual.

    49D10075-4EC7-40FF-A90E-A8DE8E1FCCEC.jpeg
     
  14. Skeeter

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    My Supra had the very same issue when I bought it. There was a small placard on the console that had a bulleted item that says something to he effect.."never leave the seatbelts buckled when exiting the vehicle, doing so will not let the batter go into a sleep mode, and will place a parasitic draw on the battery"".. When we got the car, the passengers side seat belt was buckled. It took three trips to the dealer to get that $500.00 replaced. The owner of the dealership was there on my third trip, and I talked to him about this issue. I told him that not a single person at his dealership was smart enough to read that placard setting right on top of the console.
     
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  15. thedude

    thedude Well-Known Member

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    Wow. Sadly it reinforces my concerns. Lack of training all around it seems.
     

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