12v battery maintenance, issues, etc.

[Jimota]

15 Year Toyota Hybrid Battery Cover

In addition to the manufacturer warranty, your Toyota Hybrid Battery can benefit from up to 15 years of warranty in total. With every service at a Toyota dealer, the warranty is extended for a further 12 months, up to the 15th year of registration
 

Found this on Toyota UK website.

[hind]

What does it have to do with the 12V Battery? 🙂

[CPN]

1 hour ago, hind said:

What does it have to do with the 12V battery? 🙂

Exactly!

[Jimota]

Yossarian247 on the Corolla forum has just updated me that the guarantee refers to the traction Battery.  Sorry for the b_m info.

[Bob66]

On 1/13/2024 at 8:07 PM, Roy124 said:

Please, someone put confused of Durham our of his misery.

What do you mean.....this again doesn't make sense?

[Bob66]

On 1/13/2024 at 4:42 PM, Roy124 said:

A thought:

Buying a battery charger and looking after your battery is no different from buying a tyre inflator and looking after your tyres.

Thanks @MOJO for the prompt. 

Not true.....this is the only car that I've owned ...that needs to be on constant charge...thus preventing charge anxiety...tyres might need an occasional evident top up.

[Max_Headroom]

Quote

Please, someone put confused of Durham our of his misery.

 

Quote

What do you mean.....this again doesn't make sense?

 

I wondered what he meant when he posted "Please, someone put confused of Durham our of his misery" i  wasn't going to trawl through a 79 page thread to find out,  has anyone any idea?

[Bob66]

24 minutes ago, Max_Headroom said:

 

 

I wondered what he meant when he posted "Please, someone put confused of Durham our of his misery" i  wasn't going to trawl through a 79 page thread to find out,  has anyone any idea?

Yes...I'm quite easily confused.

[Roy124]

Battery technology has improved with sealed batteries and different construction,  but some of us may remember having a bottle of distilled water on the garage shelf, of topping up each cell, and watching the electrolyte bubbling and gassing off.

Between then and now batteries have become, for many, a fit and forget item.

What is new is the increasing load placed on smaller batteries while the car is nominally powered off.

Yes, the manufacturers should have designed systems to cope and some, such as KIA use the HV Battery as the 'jumper'.

 

[Bob66]

2 hours ago, Roy124 said:

Battery technology has improved with sealed batteries and different construction,  but some of us may remember having a bottle of distilled water on the garage shelf, of topping up each cell, and watching the electrolyte bubbling and gassing off.

Between then and now batteries have become, for many, a fit and forget item.

What is new is the increasing load placed on smaller batteries while the car is nominally powered off.

Yes, the manufacturers should have designed systems to cope and some, such as KIA use the HV battery as the 'jumper'.

 

There is certainly a problem that Toyota needs to get a grip of....fitting a higher capacity and better quality Battery...would surely help the situation?

 

[Roy124]

16 minutes ago, Bob66 said:

There is certainly a problem that Toyota needs to get a grip of....fitting a higher capacity and better quality battery...would surely help the situation?

 

In the short term higher capacity would help but, as I think Cyker explained, that would only delay the inevitable.   Your two week holiday trip might be OK but a three week one might still result in a flat Battery.

Better quality certainly. 

But a better charging regime that doesn't require an hour in Ready mode every week, a reduced parasitic drain, and an integral 'jump start system' using the HV Battery are things they should consider.

[Dala]

A colleague from work - yaris cross 2023 - flat Battery a month after buying the car (she didn't use the car for a week)
Then she had the Turkish car Battery replaced with "Varta 44Ah"
Now, after returning from the hospital where she spent 3 weeks.
The first time she had to unlock it with a key. "Smart entry" was automatically deactivated by the system. No problem with starting.

[Derek.w]

If you suffer from a flat 12 volt Battery and car wont start without a jumper pack of some sort then try this providing the HV Battery has a good charge lets say above 60%.

Pull up the handbrake button and keep it up then press the starter button and hold it down after 45 seconds release handbrake button then start button.

Hopefully car will start but it depents on type of 12 volt Battery fault and how low it is after a quick boost from HV battery.

[Cyker]

Where'd you find that? I've not heard of that trick.

 

[Countryside]

10 hours ago, Dala said:

A colleague from work - yaris cross 2023 - flat battery a month after buying the car (she didn't use the car for a week)
Then she had the Turkish car battery replaced with "Varta 44Ah"
Now, after returning from the hospital where she spent 3 weeks.
The first time she had to unlock it with a key. "Smart entry" was automatically deactivated by the system. No problem with starting.

Well I hope the new 2024 model Yaris hatch as this Battery I thought the Yaris was too low for me but I put on highest seat setting 

[Countryside]

My Chr goes in for a service next week I have a Yaris design curtesy car so I’m going to go on an economy run with heating etc switched off ! If I like it I can have the new 2024 model design on motability free or the excel 2024 model for £600 ?  I think I will pay the £600 for the extra equipment as I have the car for 3 years 

[Countryside]

My Chr 1.8 hybrid did 58.7 mpg doing 65 mph on a 50 mile journey on the M1 on Sunday that’s with heater on 2 bars I’m hoping the Yaris can beat that ?

[RickyC]

13 hours ago, Derek.w said:

If you suffer from a flat 12 volt battery and car wont start without a jumper pack of some sort then try this providing the HV battery has a good charge lets say above 60%.

Pull up the handbrake button and keep it up then press the starter button and hold it down after 45 seconds release handbrake button then start button.

Hopefully car will start but it depents on type of 12 volt battery fault and how low it is after a quick boost from HV battery.

Do you mean that with this procedure the ecu will force HV contactors to close and power DC-DC converter ?

[Chas G]

I spoke too soon.

Fully charged Battery to 12.97 volts on Sunday night. Went to Morrisons 8.5 miles each way yesterday. Headlights on all the way and back in the brilliant winter sunshine.

Battery showing 12.3 volts today.

Placed an order to get a Bosch 44ahr  S4 202 Battery fitted on Thursday by RAC.

£143.......absolute bargain for a bigger bucket with a hole in it.

This 2022 Toyota Yaris Cross is a complete and utter waste of my time and money.

[Max_Headroom]

1 hour ago, Chas G said:

Battery showing 12.3 volts today.

 

1 hour ago, Chas G said:

This 2022 Toyota Yaris Cross is a complete and utter waste of my time and money.

 

Are people getting too hung up on figures?

Did it fail to start the next time you tried it?

My meter (MK3 non hybrid) is showing 11.8 after standing all night according to the charts online its only at 30% charged even thought it had a good run out the night before, it was -2 here this  morning and it started immediately with no hesitation.

[Chas G]

2 minutes ago, Max_Headroom said:

 

 

Are people getting too hung up on figures?

Did it fail to start the next time you tried it?

My meter (MK3 non hybrid) is showing 11.8 after standing all night according to the charts online its only at 30% charged even thought it had a good run out the night before, it was -2 here this  morning and it started on the second spin. (not second try)

I didn't bother trying to start it.

Until i bought the yaris cross, I had toyota non hybrid cars for nearly 20 years and when I was not well 3 years ago, I regularly used to leave my car for weeks without any Battery issues.

Before anyone tells me that modern cars use more power when left standing, I have turned off the keyless smart entry, it's not connected to mytoyota and the dash cam has been taken out.

The bigger Battery will no doubt give me a bit longer until the it goes flat. A car that won't charge the 12 volt Battery after an 8.5 mile each way journey in my opinion isn't fit for purpose.......and I am sick of looking at that banal graphic showing how the traction battery is charging while having to drive with my lights headlights on in bright sunshine.

I just hope the computer boots up ok after the battery has been replaced.

[Roy124]

51 minutes ago, Chas G said:

, I have turned off the keyless smart entry, it's not connected to mytoyota and the dash cam has been taken out.

That is but one or two power drains, and I think minor ones at that. 

The car alarm will be a drain.  The car also never goes to sleep.  All the time it is live and listening incase the mothership calls.

When you first switch off it uploads the analytics from the DCM.  How much power it consumes I don't know.

It then listens for a wake up command.  Assuming you never interrogate your MyT App the car will sit in the standby listening mode.  How much is the drain from this?

[Chas G]

I have googled this question but can't find the answer.

Does anyone know if the Bosch 44ahr  S4 202 battery has a vent?

The Battery choice was selected by the Rac website and is the right size but I am a bit worried whether they will be able to fit my vent tube.

The existing multa does have a vent tube.

thanks

Chas

[Max_Headroom]

1 hour ago, Chas G said:

A car that won't charge the 12 volt battery after an 8.5 mile each way journey in my opinion isn't fit for purpose.

It doesn't need to charge it the Battery doesn't need to be full as it doesn't crank the engine it only needs to have enough juice to power the 12v systems, as you said you didn't try it there is no reason it wouldn't have started.

Toyota  have sold 715,000 Yaris Cross in the UK imagine how many new posts there would be here daily if the Battery was as bad as some are making out, those that drive regularly are not having problems the issue originally raised its head when we had covid lockdown and people were not driving for weeks on end.

[Chas G]

@Max_Headroom my problem is I get paranoid.

You are absolutely right about Toyota and their sales of the Yaris Cross.

I was going to get the RAC to fit tails for my ctek 5 charger and the BM2 Battery monitor when they fit the 44 ahr Bosch Battery but I have changed my mind.

I just need to get the bigger Battery fitted and must stop constantly checking.

If it doesn't start I will use the Noco jump pack. If that doesn't work I will phone the AA or RAC.