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Old 12-03-2023, 03:03 PM   #1
digitron
 
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Yaris 2018 - new battery?

Hello everybody, my first post here :)

I have Yaris 2018 (NSP131L, 1,5 VVT-iE) and it has stock VARTA battery. Car runs fine, but today i've noticed that it took a few seconds more to start (cranks few seconds more than usual to start).
It's around zero Celsius here, and the car was parked outside for three days. I've noticed that last year during cold days, but this time it was significantly longer.

Later during the day after the car was parked for a few hours i took DMM and measured 12,19V while car was turned off. I took another DMM to verify readings, and the battery voltage was 11,95V. Car started almost normally (maybe 1-2 secs longer crank period than usual) and i took reading while the car was turned on. Voltage with headlights on was 13,9V which indicates that charging is OK. I could not measure voltage while starting because i was alone, and i didn't had long cables and clips.

Is it time to replace this battery due to voltage and age?
During last month the car was driven on short relations, maybe the battery just needs full charge?

If time is for replacement, is there any special attention to be made regarding computer? As i understood ECU will lose short-term memory, but i will drive car on open road (outside of the city) for 1 hour so the computer can record its parameters again. Is that OK?

many thanks for any comments!
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Old 12-03-2023, 04:45 PM   #2
WeeYari
 
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ECU will only lose its memory if battery disconnected for a significantly longer period of time than it takes to just do a battery swap.
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Old 12-03-2023, 09:52 PM   #3
Sharky808
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Resetting on battery disconnects is very minor these days. On certain cars the most you may have to do is a idle relearn or reprogram auto windows. These yaris are very minimum when it comes to technology so No change disconnecting battery won't have issues.
It's cold season now so you'll have harder times starting. There's multiple factors batteries and materials are so cheapy made and don't last like how they were years ago.
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Old 12-04-2023, 03:37 AM   #4
digitron
 
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Thanks! Given the voltage readings, should i replace the battery? Keep in mind, those readings were taken at 0 degree C (32F)
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Old 12-04-2023, 04:51 PM   #5
komichal
 
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Your battery can last a few more years.
But it can collapse in a week.
Nobody can guarantee you anything. There is no measurement device that would reveal when the battery will give up.
If the car is absolute must for you then get yourself a starterpack that can save you in critical conditions.
If you can survive one day by going by bus then do not get a starterpack.
You can change your battery as a preventive maintenance after some 2-3 years but again - even the new battery may not survive the first winter.
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Old 12-07-2023, 09:12 PM   #6
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Generally speaking, once a battery reaches 5 years old there is certainly an argument for proactively replacing it. I just did that very thing with both of my kid's cars....a '19 Corolla and a '10 Yaris. I would rather replace an old battery before it strands someone.
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Old 12-08-2023, 12:46 AM   #7
mitch9521
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Quote:
Originally Posted by Billiam View Post
Generally speaking, once a battery reaches 5 years old there is certainly an argument for proactively replacing it. I just did that very thing with both of my kid's cars....a '19 Corolla and a '10 Yaris. I would rather replace an old battery before it strands someone.
My 2014 still has the original Toyota battery it left the factory with
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Old 12-08-2023, 07:14 AM   #8
BLH
 
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My Panasonic battery.
Installed from the factory.
In my 2007 was 10 years old when I finally change it. Since it was getting questionable in the winter.
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Old 12-09-2023, 02:14 PM   #9
digitron
 
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At the end i decided to go with the new battery. Did the change already this morning. I've installed Exide 47Ah Premium with 3yrs of warranty (the original one was VARTA 45Ah).
Now i'm waiting tomorrow morning to check will engine still have long crank before starting

EDIT from the day after: It started like a brand new car :)

Last edited by digitron; 12-10-2023 at 10:28 AM.
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