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Interesting. So do the Tacos with alternators also have a seperate starter motor? That would mean that the 2025 Tacoma hybrids are significantly different than the 2024s.

None of the issues with the GM problems or the Tundra engines seem to be due to inadequate lubrication, but they all share having debris in the cases from poor QC during assembly. So I don't think a different oil viscosity would make much difference if the engines are full of foreign matter from...

Welcome @SNofRANDY! Nice truck, and super jealous of your S2000, which I see peeking out from behind your 4Runner. They both look great in white and are a wise choice living in the desert.

@Ron that is interesting. I wonder if that might also be part of why 4th gen hybrids seldom achieve their EPA mileage numbers. Did Toyota, the masters of hybrid tech, manage to screw the pooch on this drivetrain? And what about owners of 2024 hybrids? Toyota obviously added the alternator to...

I should have said the 4wd system in all the 4th gens except the Limited is not designed for on road performance. It would be interesting to see the numbers for the full time 4wd Limited hybrid. That is a totally different system and I would expect it to perform much better than the part time...

This is not really a surprise to me. The 4WD system in these trucks is designed for off road traction, and not for on road acceleration. That is not a bad 0-60 time btw - most testers must be doing their runs in 4WD because the numbers are often in the low 7 second range.

I don't think that any of us thought much about this until we realized that Toyota added alternators to most 2025 hybrids. Your analysis shows that our batteries are not being kept at the proper levels all of the time. The 12v battery can only be charged by the motor/generator in 2024 models...

Yep - there is probably nothing that we can do, and I don't expect that Toyota will add alternators to the 2024s. After my truck was in the detail shop for a week getting PPF it would not hold its CarPlay connection until I had driven it for about 15 miles. Looking back on that I think the 12v...

Our trucks not keeping their 12v batteries charged is probably why they added an alternator to hybrids for the 2025 model year. Toyota must have realized that keeping the battery charged with just the motor/generator was not enough, but what about those of us who bought 2024 hybrids without an...

That looks great!

I also am wondering where it is going to be made, and who will make it. Is it a startup or something from an established automaker? I have never seen that discussed so far.

@Xjim My dash display doesn't keep its settings either. I get it just the way I want it and eventually everything from the displayed items to the background change for no known reason.

Good looking truck. Underground is one of my favorite 4th gen colors. Enjoy!

Same here. I know the 5.7 L V8 in my Tundra was a totally different beast than our engines, but I only ever used 0W-20 during my 14 years with that truck. I never had any lubrication or oil pressure issues and the engine ran as well the day I traded it in as the day I bought it.

Driving habits are a huge factor in fuel economy, and are therefore a large part of what makes the range from the small tank a problem. And that leads to a lot of us wanting a larger gas tank. So talking about that seems to make sense to me. These trucks obviously need larger tanks, but space...

Uhhh... They forgot? lol

My truck is working fine and I'm not losing any sleep, just curious about wtf Toyota is up to. Random wild ass guessing is not Toyota's normal engineering pattern. lol An alternator is a pretty small load on a turbo ICE and none of that matters if the sucker won't start. So I would prefer to...

I thought that all the hybrids got the aux switch system, but I guess just some trims do. My truck does have them, so it should have an alternator. It might be too early to start holding my breath while I wait for an alternator TSB though. The 2024 hybrids look like another fail for the Toyota...

Thanks @Gfenza89. I didn't know there were two flavors of Tacoma hybrids, and I still don't know what the auxiliary switch system is. It would be interesting to know what makes them special and why they need an alternator and other hybrids don't. This bs just gets stranger and stranger.

I think it would be more of an issue if more hybrid owners were aware of this change. I never thought about it because I am old school Toyota, or at least I was, trusting them to have this figured out. As @Gfenza89 points out, it is a huge deal to make that change and it wasn't just to be nice...