Battery replacement on new LE 2020?

s219

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I've also tried unplugging the cameras after a full charge and the lights still come on.
It won't matter at this point -- you will need the dealer to clear the error code for the message to go away.

I will have to see when the dealer swap the battery to see if it will happen again. It's still under warranty so it will be covered for now.
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.
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s219

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Even 15 years ago BMW had a very sophisticated system that categorized various onboard electronics and accessories into groups. Some could demand only so much and would get shut off, others could draw until the battery was drained. This was fairly well documented. Perhaps something got wired in that is on a circuit that gets all the demand it wants.

Does anyone know or can they check if the battery is BMW? They manufacture their own and there’s smart electronics in the battery (again for at least 15 years) that allows the systems to pull harder on the battery as it gets older and has reduced output (to keep up with the demand of the systems). This means a service reset when a new battery is installed and you have to use OEM.

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.
 

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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.
 
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JggyMKV

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

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

RRKnight

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

084runnerltd

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thedude

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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.
 

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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.
 

084runnerltd

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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.
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)
 

thedude

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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)
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.
 
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s219

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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.
 

thedude

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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.
Yes.

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

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

Skeeter

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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
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.
 

thedude

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