50e BATTERY HOLD function

DaveDBD · 04-27-2023, 11:19 AM

It holds the charge by not using the battery. No charging is done except through coasting or braking. So indeed it removed the hardware needed to charge via the engine. Probably related to the automatic transmission redesign.

AloneAlien · 04-27-2023, 11:34 AM

Quote:

Originally Posted by DaveDBD

It holds the charge by not using the battery. No charging is done except through coasting or braking. So indeed it removed the hardware needed to charge via the engine. Probably related to the automatic transmission redesign.

Charging with coasting or breaking uses the same hardware as changing with the engine.

DaveDBD · 04-27-2023, 11:55 AM

If so then maybe BMW will add charging back in.

nZtiZia · 04-27-2023, 12:05 PM

Quote:

Originally Posted by DaveDBD

It holds the charge by not using the battery. No charging is done except through coasting or braking. So indeed it removed the hardware needed to charge via the engine. Probably related to the automatic transmission redesign.

that’s not possible. HVAC and some 12V components are completely dependent on the HV battery, so it’s being used to power said functions. can’t rely on regeneration alone to maintain the HV battery level when those functions are operating. (heating alone can be a power sucker.)

nZtiZia · 04-27-2023, 12:06 PM

Quote:

Originally Posted by DaveDBD

If so then maybe BMW will add charging back in.

agree, they should

DaveDBD · 04-27-2023, 12:26 PM

I suggest all 50e owners write in to BMW and request the charging function be brought back via a software update.

nZtiZia · 04-27-2023, 12:32 PM

Quote:

Originally Posted by DaveDBD

I suggest all 50e owners write in to BMW and request the charging function be brought back via a software update.

shoot, I’m a 45e owner, but I’ll write to them. sign me up!

915M · 04-27-2023, 01:41 PM

Quote:

Originally Posted by DaveDBD

I suggest all 50e owners write in to BMW and request the charging function be brought back via a software update.

where we can write about it?

jad03060 · 04-27-2023, 03:11 PM

Quote:

Originally Posted by 915M

where we can write about it?

BMW US headquarters is in NJ...the address should be easy to find.

Regaining the adjustable battery hold functionality might be something that could be enabled via coding...you might consider looking in the BimmerCode options, or sending the author a note asking him if it's possible. IOW, the software switch to enable that functionality MIGHT exist in the software already.

mobsync · 04-27-2023, 06:19 PM

Quote:

Originally Posted by jad03060

The manual also says to press the menu button after pressing the hold button...it implies that various customization options then are displayed. This MIGHT let you adjust the desired hold level...someone would have to try it.

Which menu button?

915M · 04-27-2023, 06:40 PM

Quote:

Originally Posted by jad03060

BMW US headquarters is in NJ...the address should be easy to find.

Regaining the adjustable battery hold functionality might be something that could be enabled via coding...you might consider looking in the BimmerCode options, or sending the author a note asking him if it's possible. IOW, the software switch to enable that functionality MIGHT exist in the software already.

Should we set a day for a demonstration? We can ask future PHEV owner and 330e owners to join us too

jad03060 · 04-27-2023, 07:27 PM

Quote:

Originally Posted by mobsync

Which menu button?

THe stacked list icon...that should bring up a menu...no idea what's on it, though...the manual doesn't say. It's likely context sensitive, so you may need to play a bit to view what you desire.

biterror · 04-28-2023, 01:47 AM

What happens if you press the Battery Hold button twice?

mobsync · 04-28-2023, 09:20 AM

Quote:

Originally Posted by biterror

What happens if you press the Battery Hold button twice?

Not in the car at the moment but I'm pretty sure it turns the mode back off.

mobsync · 04-28-2023, 09:21 AM

Quote:

Originally Posted by jad03060

THe stacked list icon...that should bring up a menu...no idea what's on it, though...the manual doesn't say. It's likely context sensitive, so you may need to play a bit to view what you desire.

I tried the Charging icon after pressing the Battery Hold button and do not see anything regarding a charge level.

AtaK · 04-29-2023, 01:43 AM

Quote:

Originally Posted by jad03060

BMW US headquarters is in NJ...the address should be easy to find.

Regaining the adjustable battery hold functionality might be something that could be enabled via coding...you might consider looking in the BimmerCode options, or sending the author a note asking him if it's possible. IOW, the software switch to enable that functionality MIGHT exist in the software already.

You are right it is a simple coding question, not a cost issue for BMW. Similar to what I am trying to achieve for the last 5 months to enable adjusting automatic regen level or completely switch it off - also simple programming issue. I wrote a letter to BMW through our country's BMW company, but no answer yet...

I studied good functions in other PHEVs and asked BMW to enable those in the 45e with simple coding instead of expensive mechanical or electrical changes. Do not know why they still stick to some wierd decisions... My focus was improving fuel efficiency (a lot) by letting coasting mode in electric and hybrid modes and it is also better for my personal taste (and some other improvements). Hopefully they will hear customer's voice once

jad03060 · 04-29-2023, 02:07 AM

FWIW, by judicious use of the gas pedal, and watching the power meter, you can coast...it's just not quite as easy as just letting off on the pedal totally. The i3 I owned was the same way...it did not coast on its own...it went from accelerating to cruising, to coasting, to gradually increasing regeneration. The X5 doesn't have anywhere near the level or regeneration, but because it weighs over 2x as much, there's still power to be made with less deceleration at maximum rates.

04-27-2023, 11:19 AM	#23
DaveDBD First Lieutenant 154 Rep 303 Posts Drives: BMW X5 Join Date: Mar 2022 Location: Washington iTrader: (0)	It holds the charge by not using the battery. No charging is done except through coasting or braking. So indeed it removed the hardware needed to charge via the engine. Probably related to the automatic transmission redesign.
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04-27-2023, 11:55 AM	#25
DaveDBD First Lieutenant 154 Rep 303 Posts Drives: BMW X5 Join Date: Mar 2022 Location: Washington iTrader: (0)	If so then maybe BMW will add charging back in.
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04-27-2023, 12:26 PM	#28
DaveDBD First Lieutenant 154 Rep 303 Posts Drives: BMW X5 Join Date: Mar 2022 Location: Washington iTrader: (0)	I suggest all 50e owners write in to BMW and request the charging function be brought back via a software update.
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04-28-2023, 01:47 AM	#35
biterror Captain 522 Rep 804 Posts Drives: X5 45e 2021 Join Date: Aug 2020 Location: Random iTrader: (0)	What happens if you press the Battery Hold button twice?
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04-29-2023, 02:07 AM	#39
jad03060 Major General 3185 Rep 6,835 Posts Drives: X5 45e Join Date: Aug 2018 Location: NH iTrader: (0)	FWIW, by judicious use of the gas pedal, and watching the power meter, you can coast...it's just not quite as easy as just letting off on the pedal totally. The i3 I owned was the same way...it did not coast on its own...it went from accelerating to cruising, to coasting, to gradually increasing regeneration. The X5 doesn't have anywhere near the level or regeneration, but because it weighs over 2x as much, there's still power to be made with less deceleration at maximum rates.
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