mine was replaced by pulling the old one out and putting the new one in.
No ECU programming.

 

Out with the old, in the with the new. It's not rocket science.

 

I have yet to replace my battery, but my understanding is that you need to do all the ECU stuff if you go away from a factory EFB battery (extended flood battery) and try to go to a conventional battery. The car will keep nagging you that your battery is wrong. Again, I have not done this, but I was told that you can go with an AGM instead of an EFB and get close to the same stop\start life for about $200 less.

 

The last time I looked, the AGM battery was slightly more (about $10.) than the EFB. A few years ago, it was the AGM was maybe $30- $50 more.
The FLA battery is much less than either AGM or EFB.
If you change to a "non-dedicated" battery (Toyota's name for an FLA), then you need to change the entry via TS to "non-dedicated".

 

I just put my 3rd battery into my 2017. The first I've bought, since the second was still on warranty. Went to Autozone and it took 10 minutes and $200. 3 year full replacement warranty. No codes, messages or problems.

 

Did your replacement from AutoZone have those "breathing/over flow tubes"? I'm thinking about just buying the Autozone battery myself.

 

Still rocking my aftermarket AGM without an issue.

 

I replaced my battery with a Toyota battery last Christmas. Didn't do anything but R&R it.

 

Mine needs to be replaced and Costco is OOS of the 24F AGM replacement. I just installed a regular 24F and it works without issue (though I have auto stop/start disabled). Has anyone found another group size that fits (that Costco has in stock)? Costco has been OOS of this battery all summer. I've been checking almost every week.

I also understand there is a battery control module that needs to be reset (even if replacing with the correct battery. My plan is to buy a 2-way OBD reader and reprogram myself (after I find the battery.
FWIW, I rigged up a temporary power supply (through the OBD port) to back feed power while I replaced the battery (to the non AGM/EFB type). I'm not sure if this helped, but my HL never lost power during the swap.
TIA

 

Just replaced mine with the AGM Diehard from Advance and it works great. No changing the ECU or anything, just dropped it in and saved $100+ buying it from Toyota.

Advance Auto Parts - Down for Maintenance

 

The Die Hard AGM was the same exact one I used, no need for ECU changes needed. However I also defeated the auto start stop, so it's moot. If someone defeated the start/stop, then there's really no need for an AGM and you should be able to go to a cheaper FLA battery.

 

Costco seems to always have the best deal...this is what I have and the price is pretty good...no problems been in my car about 10 month

 

Need to replace battery on my 2016 Highlander XLE - with no auto start/stop. Should I use memory saver?

 

I just replaced my battery on a 2019. The battery was out for approximately 15 minutes. I only had to reset the clock above the radio, and I lost the "current MPG". Everything else was retained in the cars memory, nothing was lost.

 

just lost my battery in a 2019 highlander se it was a SUNDAY so I tried a diehard platinum battery they said would work, but the negative battery terminal would not tighten up on the new battery? Had to put solderless connector to shim it in it. So finally took it to the dealer and said its wrong battery . Dealer says the battery for start stop is TOYOTA OEM comes with 7 years warranty and its about a hundo more than the diehard is. FYI also the negative terminal has special connection on it and the tighten down bold is vertical that clinches up from the bottom to secure the terminal on the battery post so your stuck buying the OEM that fits properly IMO maybe other owners had a different terminal connection ?

 

just lost my battery in a 2019 highlander se it was a SUNDAY so I tried a diehard platinum battery they said would work, but the negative battery terminal would not tighten up on the new battery? Had to put solderless connector to shim it in it. So finally took it to the dealer and said its wrong battery . Dealer says the battery for start stop is TOYOTA OEM comes with 7 years warranty and its about a hundo more than the diehard is. FYI also the negative terminal has special connection on it and the tighten down bold is vertical that clinches up from the bottom to secure the terminal on the battery post so your stuck buying the OEM that fits properly IMO maybe other owners had a different terminal connection ?

What size is your Diehard battery?



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Batteries + Bulbs

 

Costco 1421400 ($180) is the same as
Interstate MTX-24F ($230) (AGM).
Interestingly
Interstate only lists MTX-24F EFB ($220) as compatible with 2014-2019 Highlander, not the AGM version MTX-24F.
I may drop by Costco and ask them to order one. If not, there is a Interstate Store 5 miles away.

Edit:
Costco ordered 1421400 Interstate MTX-24F. battery for me for $180. Only the manager could do the ordering. I walked in on Sunday morning, quiet time. Saved $50 in excange for up to 1 month wait.

 

Is this for your LE Plus 2019? Also few other questions. Curious why did you go with MTX-24F (AGM)and not the MTX-24 EFB?

Based on what I an reading the EFB's are what factory specs were, but sounds like AGM's ? may have a bit more long term benefits? Also reading about some comments car is programmed for an EFB setup and not AGM, therefore some charging capacity may be altered with AGM's. However most of these comments I didnt see a defintive confirmation on this.

 

I brought the Costco 1421400/1624803 24f AGM battery by the item number because that was the only way the transaction can go through. For $183. From the Interstate battery search website, two options show up. MTX-24 F (agm) $255. MTX-24 F EFB $240.
It is easy to order that from Costco, you save almost $70.

I have a gut feeling Interstate, currently building a network of direct stores and indirect garages/drop off points, is taking the business back from Costco.

 

I would go with the EFB, helping a friend out as I write this and found this info

• EFB batteries have several advantages over AGM batteries. The most significant advantage is their longer cycle life. An EFB battery can withstand more cycles of charge and discharge than an AGM before it reaches the end of its useful life. Another advantage is that EFBs can be discharged to a greater extent than AGMs in high-vibration applications.

I also saw on the forum the AGM batteries are not as heat tolerant as the EFB. Wish I new this before listening to Auto Zone

 

Saw this one at Walmart.

Robot or human?

 

@Craig3277 @golftango29 @dronesouth. I’ve replaced with a Duralast Platinum AGM. Although, start e stop gives a message saying:” Stop & Start Unavailable” It worked as soon I put the battery.. but on the next day its giving me that massage, not sure if will work after a long highway drive.. but just reporting this different behavior. Any thoughts?

 

change battery type using techstream.....

 

My apologies for me last comment. Everything is working fine with the 24f Duralast Platinum AGM. The only reason the S/S was unavailable was because when I first started the car the hood was open. And that’s exactly what it says on the owners manual. So far so good!

 

replaced the battery yesterday, 24F everstart maxx 3 year - $140 from the 'mart.

Rural King has their exide 24F for $180, but not in stock locally but it is a 4 year.

Hildy threw some weird stuff a year ago and that is when I found out the Toy batteries (yuasa) are NOT maint free, I added distilled (NEVER Tap, NEVER spring!) and put it on a conditioner charger for a day. But a year later it was getting low.

so from reading the thread, some quick hits:

DO NOT AGM underhood...heat will kill them. I use AGM in boats (MS), tractor and ATVs. Mebbe a show car, not a DD.

The fact that the light will stay on up to 30 minutes later is a problem, this and auto stop/start can be defeated in the BCM with a scan tool, but my dealer says it is against company policy to do so. But I think it is because they are grade a a-holes. they are as worthless as (insert some item 'on' some other item in a comical fashion, like screen doors on a submarine etc - also heard one involving RC church female clergy)

the 2019 highlander has 32 computers and not a single damn one of them could mention 'hey check the battery' until all they could do was freak out like the car was possessed or hacked? and they want us to let the cars drive themselves.....NOT.

If there is a difference between the charging characteristics of LA, EFB or AGM - and there is - and the factory calls for EFB due to stop start, then going to AGM means setting something in a 'ECM is also worthless. I got 4.5 years almost exactly out of the factory Yuasa. I will go with that. (but the 10 year old everstart MS in the boat STILL works. shows charged, cranks slower...but damn, 10 years? being hooked up year round to an onboard smart charger - ESPECIALLY over the winter - has its advantaged. Ill change her in the spring....)

 

Bought AGM Group 24F from costco for my 17 LE AWD plus. I ran into the problem with securing the positive terminal with the clamp as the post from the new battery is thinner than the old one. I bought the battery terminal shim from autozone but then it's too thick. I ended up cutting it into a strip, hammered it and wrapped around the terminal to make it fatter. Other than that, I followed the typical battery replacement procedure.

 

Hi Tom. I Own a 2019 Highlander XLE with S/S and replaced the battery with a autozone Duralast Platinum AGM, which I’ve seen people using the Interstate AGM from Costco (much cheaper and probably the same battery which they are all made by interstate). The battery is performing just amazing, for me just a great improvement since dealer charges 380$ around here. The only difference is that I used an OBD Memory Saver (bought on Amazon) for the ECU and transmission Learning modules since the tranny behavior changed to my way of driving. Other than that, if you don’t mind loose your settings,etc it’s pretty much plug and play. My next battery will be an AGM from Costco

 

The 2.5 year old Die Hard AGM battery starting failing, and that’s with the auto start stop disabled. So I just decided to throw a standard flooded Interstate MT-24F battery from BJs for $109. Don’t feel like throwing a $300 plus EFB or AGM in there if all I can expect is 3 years out of it. I’m sure the standard flooded battery will do just fine with the auto start stop disabled. And if it doesn’t; there’s a 24 month warranty.

If folks insist on EFB, $255 isn't bad at all.

MTX-24F battery | Interstate Batteries

www.interstatebatteries.com