12v battery maintenance, issues, etc.

[Roy124]

Chas, been there, done that.

Next wish list is Remote Stop.

[RickyC]

16 hours ago, Chas G said:

....no wonder it wouldn't lock. It was sitting there in ready mode.

I've stopped to count the times that happened to me 😇.  

I park, get down from te car, press the keyfob and.... nothing.

Open the door and a big READY label explains why !!!!!! 😉

[einfachGaer]

Mine beeps very loud if I exit the car with the key in my pocket and close ANY door ... This could never happen to me. No idea why yours doesn't do that?!

[Roy124]

13 minutes ago, einfachGaer said:

Mine beeps very loud if I exit the car with the key in my pocket and close ANY door ... This could never happen to me. No idea why yours doesn't do that?!

Oh they do, but we get nagged so many times that one more is just as easy to ignore.

Anyway, our point is you are now out if the door and have to get back inside,  just as you do.

[Dala]

18 minutes ago, einfachGaer said:

Mine beeps very loud if I exit the car with the key in my pocket and close ANY door ... This could never happen to me. No idea why yours doesn't do that?!

It is normal for me

Areas in which the electronic key is detected

A - locking or unlocking the door

B - starting or switching

 

[einfachGaer]

9 minutes ago, Roy124 said:

Oh they do, but we get nagged so many times that one more is just as easy to ignore.

Anyway, our point is you are now out if the door and have to get back inside,  just as you do.

Yes, because the steering wheel lock only engages when you turn off the car and the driver's door is closed.

[RickyC]

1 hour ago, einfachGaer said:

Mine beeps very loud if I exit the car with the key in my pocket and close ANY door ... This could never happen to me. No idea why yours doesn't do that?!

Also mine does.

But I'm so used to beeps that often I ignore them.

Moreover very often there's so much ambiental noise that the loud beeps are lost in the background.

[Chas G]

19 hours ago, RickyC said:

Also mine does.

But I'm so used to beeps that often I ignore them.

Moreover very often there's so much ambiental noise that the loud beeps are lost in the background.

@einfachGaer and @RickyC

My keyless entry is turned off which probably explains the lack of beeping noise.

[mr_blibby]

 Appologies if posted before ....FYI on the approach Toyota seem to be taking in Poland

[hind]

Yeah I've posted this a while ago but the reality is that absolutely nothing has changed 😞 a week ago one of the owners of the YC who has issues with 12v Battery after even 3 days of parking checked the actual capacity using professional Battery meter which indicated the capacity to be around 12Ah (should be 35Ah). He raised this to the dealer and they tested it themselves. Result? Battery fine, needs recharging. End of story 😕

 

[Roy124]

On 4/19/2024 at 9:35 PM, Dala said:

 

Areas in which the electronic key is detected

B - starting or switching

 

Thanks for the B reminder.  Shows clearly why it can't detect my key when I put it in the dash stowage. 

PITA as I have to drop it in a cup holder.

Mind you, my wife as a passenger is even better with the house keys.   They may be in the left door pocket, her handbag, on the floor by her right foot, in a cup holder,  or the front cubby.  NTST 😮‍💨

[ChrisJohn]

I am continuing to have 12v Battery issues with just a couple of short journeys resulting in starting failure. I now have a Battery boost starter and also am aware of Toyota's advice to leave car in "Ready" for up to an hour to allow the system to charge up the 12v Battery. 

However, the car has just had its first service and another overnight trickle charge and the battery has reported as OK. The Toyota service manager has told me that Toyota is aware of this issue and is planning to introduce a battery with greater capacity but still fits in the space available. Has anyone heard about this or have any more details? I have no details of timing but the service adviser has just told me that they are expecting a bulletin on the subject.  Clearly the battery is inadequate for the tasks required of it as things stand now.

[Roy124]

Chris,  nothing new there.  My dealer fitted a 42AHr v 35AHr 3 years ago.  

[ChrisJohn]

I don't know what capacity is fitted to my Yaris Cross but the dealer has told me that Toyota will not authorise a Battery change under warranty if the one fitted passes their test.

[Dala]

A Toyota dealer will allow Battery replacement under warranty, but you must purchase this 12V Battery.

[hind]

In other words, as long as the OEM Battery fulfills the test procedure criteria, they won't pay for the replacement under warranty. 

If the OEM Battery fails the test procedure (during the warranty period), they will install the replacement - probably identical to what you have. The cost will be covered by Toyota.

If you'd like to have a Battery of a different brand (eg. Yuasa or Varta of larger capacity) which has identical dimensions and all required features (like a vent) then you have to pay for it but installing it won't void the warranty as it meets the manufacturer requirements. 

[Roy124]

2 hours ago, ChrisJohn said:

I don't know what capacity is fitted to my Yaris Cross but the dealer has told me that Toyota will not authorise a battery change under warranty if the one fitted passes their test.

That seems reasonable but is not the end of the matter.

I went through that loop.  I then logged the Battery voltage each day over a week when I did not drive it.

I took it in, presented my figures, and collected the car a couple of hours later with a new, higher capacity,  Battery.

a.  They might refuse to change it.

b.  They might change like for like.

c.  They might fit a higher capacity Battery.

[Cyker]

The least hassle route if you can afford it is to just get the Yuasa and fit it rather than jump through all these hoops.

That said mine is still working, although it said failed in the HHC certificate again (It has a section specifically for the 12v battery) after I had to take it back because they forgot to do the HHC when they did the service! . But that was after nearly 2 weeks of minimal use over the Easter Hols.

I think my high use is keeping it just alive enough, but I'm deffo keeping that NOCO charged and ready!   

 

[MC1216]

9 minutes ago, Cyker said:

The least hassle route if you can afford it is to just get the Yuasa and fit it rather than jump through all these hoops.

That said mine is still working, although it said failed in the HHC certificate again (It has a section specifically for the 12v battery) after I had to take it back because they forgot to do the HHC when they did the service! . But that was after nearly 2 weeks of minimal use over the Easter Hols.

I think my high use is keeping it just alive enough, but I'm deffo keeping that NOCO charged and ready!   

 

I agree about the Yuasa Battery (used them on many cars and simply no issues)

I joined this forum to find out what issues i might have buying a new Corolla and apart from the Battery issues,the Toyota app and now the RSA which won't switch off on 24 models i don't see many other issues.

Just buy a Battery...yes Toyota should have done better but spending 20/30k on a car what is another £100 for peace of mind.

[ChrisJohn]

Thanks for all the suggestions. Yes, I will keep the NOCO ready but the biggest factor as far as I am concerned is that my wife has lost all faith in the car's reliability. That to me is the number one factor in choosing a brand and car. Whilst I am happy to rely on the NOCO, the Yaris Cross is my wife's car and I cannot expect her to use the NOCO. I am 80 and she will be very soon. A reliable car is an absolute must.

[ChrisJohn]

That last post got away before I was ready!  What I really want is for Toyota to admit that they got it wrong. Their advice to leave the car in “Ready” mode to allow it to top up the auxiliary Battery is not acceptable.  It is my understanding that this advice contravenes Section 42 of the Road Traffic Act 1988, “engine idling is an offence”. Am I wrong in this respect?

 

[Dala]

10 minutes ago, ChrisJohn said:

... this advice contravenes Section 42 of the Road Traffic Act 1988, “engine idling is an offence”...

 

I just hope Toyota doesn't follow the slogan:
Do you have the money for a new hybrid car? Then you can pay fines!

[Roy124]

Chris, correct (I think).  Find chapter and verse and hit them with it.

Downside is they may disable the ore-heater option. 

I can see a least cost option.  Persuade Mrs CJ that the problem has been fixed:

Get a new Battery as Cyker recommends.   Get the dealer to fit a charger tail to the Battery.  Put the car on charge once a week overnight.

That should avoid to cost of a new car.

PS

I have issues like this where something fails and should be replaced but a little investigation and remedial work does the trick.

[anchorman]

On 4/24/2024 at 7:26 PM, ChrisJohn said:

That last post got away before I was ready!  What I really want is for Toyota to admit that they got it wrong. Their advice to leave the car in “Ready” mode to allow it to top up the auxiliary battery is not acceptable.  It is my understanding that this advice contravenes Section 42 of the Road Traffic Act 1988, “engine idling is an offence”. Am I wrong in this respect?

 

They know Chris but there are a lot of cars with no problems and the floodgates will open on those too.  Have a read through the thread and you’ll find many a noble crusader that wants to tell Toyota a thing or two.  You’ll end up going to a lot of effort for nothing and you might eventually get a new Battery but at this stage, probably the same as the one you’ve got.  It is actually in hand and they are working on it but the best thing you can do is spend £75 and 20 minutes sticking a new Yuasa Battery under the back seat and be done with it.  Your faith will be restored in what is actually a very good car.  

[Derek.w]

I hope Toyota just fit a solar panel or two to the roof problem solved unless you car in the garage or has a covering of snow.