The 12 V battery saga yaris hybrid

[Wooster]

On 10/13/2024 at 11:39 AM, MikeSh said:

The problem with it seems to be short journeys...

Is the real answer to fit a Battery with a greater capacity? Given the limited space available, fitting a larger capacity Battery would be difficult. So, could a different style of Battery be a solution? Hybrids don't need the 200 amp 'start current' that the standard battery can supply, so isn't there a more suitable style of battery? I don't know what would be suitable, but how about a mobility scooter battery? 

[Mojo1010]

It's the same size and better quality Battery. A member put in the yuasa and were able to start the car after 21 days, the Turkish Battery will not be able to start. 

[Wooster]

5 minutes ago, Mojo1010 said:

It's the same size and better quality battery...

OK, understood.

[MarieG]

Yaris Excel 74 plate Battery issue

I’ve had my 74 plate Yaris Excel for 6 weeks and have had to call the AA out twice now due to a flat Battery (first time was after only 21 days and most recently at the weekend) plus I’ve jump started it myself once. Both AA technicians tell me it is not holding the charge and needs replacing. Dealership say everything is fine with their tests and can give no explanation. Low mileage definitely isn’t the issue as I’ve done over 1100 miles so far and it’s driven every day. It’s going back to the dealership tomorrow with both sets of AA reports. Really disappointed so far as the car was bought mainly for Toyota’s reputation for reliability. 

[Mojo1010]

Whoa that's not good. It seems like a bad Battery, insist the dealership replace under warranty with those AA reports. Don't take no for an answer. 

[Corolly Poly]

40 minutes ago, MarieG said:

Yaris Excel 74 plate battery issue

I’ve had my 74 plate Yaris Excel for 6 weeks and have had to call the AA out twice now due to a flat battery (first time was after only 21 days and most recently at the weekend) plus I’ve jump started it myself once. Both AA technicians tell me it is not holding the charge and needs replacing. Dealership say everything is fine with their tests and can give no explanation. Low mileage definitely isn’t the issue as I’ve done over 1100 miles so far and it’s driven every day. It’s going back to the dealership tomorrow with both sets of AA reports. Really disappointed so far as the car was bought mainly for Toyota’s reputation for reliability. 

I'm steeling myself for a similar battle. It is unacceptable that you can't leave a new car for over a week without having to jump it on your return.

[152bobby]

On 10/11/2024 at 4:03 PM, jthspace said:

You could try an uprated Yuasa battery - Yuasa YBX5202 - a straight swap with no downside and better quality than the cheap-as-chips Turkish battery fitted as standard.

YUASA BATTERY - £53 mail order direct - £90+ Halfords

Many swear by it - myself included - and my Yaris was left for 21 days in July/August when I was in hospital and it started with no issues first time when I got home.  I also have a cheap battery booster in case I ever got stuck - £35 Amazon (lots to choose from). I bought a cheaper one as I don't need one that is powerful enough to start a petrol engine - I just needed it to boot the computer in the Yaris.  It was originally for my Mitsubishi PHEV which would flatten its tiny 12v battery in a few days.  To be honest, I've never needed it for the Yaris.  Keep it under the passenger seat, if it's in the boot, you can't open it if the battery is flat.

I'm going to change my Battery for this Yuasa YBX5202 just to be prepared.  Is there anything to reset etc after changing the Battery, will the car throw a wobbly of any kind or is it really just a straight swap.?  Also, is the Yuasa YBX5202 the same as the Yuasa HSB202 ?

[HarryW2024]

1 hour ago, MarieG said:

Yaris Excel 74 plate battery issue

I’ve had my 74 plate Yaris Excel for 6 weeks and have had to call the AA out twice now due to a flat battery (first time was after only 21 days and most recently at the weekend) plus I’ve jump started it myself once. Both AA technicians tell me it is not holding the charge and needs replacing. Dealership say everything is fine with their tests and can give no explanation. Low mileage definitely isn’t the issue as I’ve done over 1100 miles so far and it’s driven every day. It’s going back to the dealership tomorrow with both sets of AA reports. Really disappointed so far as the car was bought mainly for Toyota’s reputation for reliability. 

That’s shocking tbh, particularly as it’s driven most days and has 1100 miles in 5 weeks, if they say the Battery is fine then it must be something else and they need to tell me what it is.

im not convinced the charging profile for the 12v system as used by Toyota is correct for a calcium Battery, it only goes to 14.4v at best, whereas a calcium Battery is wanting 14.7v for bulk charging, likewise float should be around 13.4-13.7v but it’s only around 13v most if the time. 

Like yours mines 74 plate and I’d be having a preliminary ’not fit for purpose’ conversation with them, giving them fair warning.

[JFMM50]

Got a 2024 Yaris Excel just left it for nearly 3 weeks on the drive while away. Got back started straight away, no issue.

[152bobby]

There's some inconsistencies being reported, some people are having issues and some aren't....in a weird way, that's more worrying than it happening to everyone !! Just wondering, for the people who have had a problem, have they had a Dashcam active on parking mode or something?  When I left my YC at the airport for 8 days, I disconnected my dashcams power completely, as I did not want any external factors involved if I came back to a dead Battery.  Not ideal doing this, because I like using the parking mode function, it's one of the main benefits of having a Dashcam !!

[Corolly Poly]

2 minutes ago, 152bobby said:

There's some inconsistencies being reported, some people are having issues and some aren't....in a weird way, that's more worrying than it happening to everyone !! Just wondering, for the people who have had a problem, have they had a dashcam active on parking mode or something?  When I left my YC at the airport for 8 days, I disconnected my dashcams power completely, as I did not want any external factors involved if I came back to a dead battery.  Not ideal doing this, because I like using the parking mode function, it's one of the main benefits of having a dashcam !!

That might be an issue with mine and I will get them to be checking that it is connected to a switched supply. Parking mode should just run off the internal Battery I think. It was a dealer fitted option so I expect it to have been fitted correctly and not impact on my ability to start the car. As you say, parking mode is useful and having to disconnect the Dashcam each time it is parked long term doesn't make sense.

[jthspace]

My 24 YC Premiere has a different coloured Battery (white casing) from my Yaris, no labels visible unfortunately so can't tell if it's a different make or model from the Battery I had in the Yaris (which I changed to a Yuasa and removed when it was sold).   I was going to change it over but will keep it "for a rainy day".

[Corolly Poly]

10 hours ago, 152bobby said:

I'm going to change my battery for this Yuasa YBX5202 just to be prepared.  Is there anything to reset etc after changing the battery, will the car throw a wobbly of any kind or is it really just a straight swap.?  Also, is the Yuasa YBX5202 the same as the Yuasa HSB202 ?

I believe they are the same 

[152bobby]

7 minutes ago, Corolly Poly said:

I believe they are the same 

Thanks.  I'm going to have a look at the existing Battery first, because the previous owner may have already done this 🤞

[MikeSh]

13 hours ago, 152bobby said:

is the Yuasa YBX5202 the same as the Yuasa HSB202 ?

From looking at search results it seems the YBX replaced the HSB.

And the YBX is out of stock in a lot of places ... (Though one had it listed - but at £700+ which I understand to mean oos anyway.)

[TonyHSD]

I don’t underpowered  these latest trends everyone to have cameras in the cars but this brings all sort of problems including dangerous driving.  Tesla and the Chinese tablets on wheels perhaps has played a big part of all that but honestly no one ever need a cameras in their cars. 
These Toyota cars has small 12v batteries that barely can cope with existing accessories they power up, you add unnecessary power consumers on top and results are obvious. Don’t watch Teslas and other crap cars , they have totally different 12v (16)  batteries , and ability to recharge the small Battery from the large one when car is stationary and locked. , Toyota can not. 

[Corolly Poly]

15 minutes ago, TonyHSD said:

I don’t underpowered  these latest trends everyone to have cameras in the cars but this brings all sort of problems including dangerous driving.  Tesla and the Chinese tablets on wheels perhaps has played a big part of all that but honestly no one ever need a cameras in their cars. 
These Toyota cars has small 12v batteries that barely can cope with existing accessories they power up, you add unnecessary power consumers on top and results are obvious. Don’t watch Teslas and other crap cars , they have totally different 12v (16)  batteries , and ability to recharge the small battery from the large one when car is stationary and locked. , Toyota can not. 

Invaluable in an accident to prove innocence.  Particularly when deliberately shunted from the rear which is the latest trend😁. These miscreants will probably not shunt you if they see a rear Dashcam. 

They can also record damage done when you are away from the vehicle and parked.

They can also result in a reduction in insurance premium. 

[HarryW2024]

I don’t know what Battery my MY24 YCPE has fitted but it’s been parked up for a week now. The last journey was to the airport to drop someone off, about a 4 hour round trip, so assume fully charged when parked.

I just popped out to it now and the Battery is showing 12.2v, so 50-60% charged.

re Toyota, I don’t know what tester they use on 12v batteries but it must measure State of Health (SOH) not just State of Charge (SOC) as you can have a superficial surface charge that shows say 12.7v (SOC) for a fully charged Battery but because of the plates/terminals being sulphated from being depleted too far it is not a healthy battery and may have much much less than the original capacity aka SOH.

i presume the RAC gave you a print out showing the SOH for your battery to present to your dealer?

here’s a cheap, but regarded, battery tester for those more into DIY testing of their batteries.

https://www.amazon.co.uk/ANCEL-Alternator-Analyzer-Cranking-Motorcycle/dp/B09T6TTN11

 

[Yaris_Cross]

4 hours ago, Corolly Poly said:

Invaluable in an accident to prove innocence.  Particularly when deliberately shunted from the rear which is the latest trend😁. These miscreants will probably not shunt you if they see a rear dashcam. 

How does that work, unless the law has changed  if you run into the car in front its automatically your fault?

Get a fake rear camera and one of these.  😉

 

[MarieG]

20 hours ago, MarieG said:

Yaris Excel 74 plate battery issue

I’ve had my 74 plate Yaris Excel for 6 weeks and have had to call the AA out twice now due to a flat battery (first time was after only 21 days and most recently at the weekend) plus I’ve jump started it myself once. Both AA technicians tell me it is not holding the charge and needs replacing. Dealership say everything is fine with their tests and can give no explanation. Low mileage definitely isn’t the issue as I’ve done over 1100 miles so far and it’s driven every day. It’s going back to the dealership tomorrow with both sets of AA reports. Really disappointed so far as the car was bought mainly for Toyota’s reputation for reliability. 

Update: Car back at dealership today, they said they are aware of the Battery issues and have replaced it with a new higher capacity Battery. Hopefully that resolves the issue. Time will tell. 

[152bobby]

1 minute ago, MarieG said:

Update: Car back at dealership today, they said they are aware of the battery issues and have replaced it with a new higher capacity battery. Hopefully that resolves the issue. Time will tell. 

Can you let us know exactly what replacement Battery they put in ? Thanks.

[CJA2002]

Interesting result, there.

Most dealers claim to know nothing of any Battery issues...🙄  but that's the first response on this saga that suggests a higher capacity Battery is availabla (Iunless it's a Yuasa, as I think that's rated higher) from Toyota and/or dealership.

I will certainly be watching this space..........

[MikeSh]

4 hours ago, HarryW2024 said:

I just popped out to it now and the battery is showing 12.2v

But presumably you had to unlock the car and open a door to check it? In which case the car will have partly woken up and be drawing power giving a lower voltage.

I wanted to check the 'rested' voltage on mine a few months ago, but I ended up stood beside it for a minute wondering how I could get to it ...

Then I gave up and went to do something else 😒

[Corolly Poly]

1 hour ago, Yaris_Cross said:

How does that work, unless the law has changed  if you run into the car in front its automatically your fault?

Get a fake rear camera and one of these.  😉

 

Me getting mixed up. It's those in front brake testing you I was thinking about.🤣

[HarryW2024]

40 minutes ago, MikeSh said:

But presumably you had to unlock the car and open a door to check it? In which case the car will have partly woken up and be drawing power giving a lower voltage.

I wanted to check the 'rested' voltage on mine a few months ago, but I ended up stood beside it for a minute wondering how I could get to it ...

Then I gave up and went to do something else 😒

I know, but close enough for a quick check.
If I was seriously trying to understand it, I’d fit a visible voltmeter you could view without waking up the car.