How to disable hill start assist on 2022 TRD Sport MT

I mean it doesn’t hold your truck hostage. If it’s engaged or not, you can easily take off on a gradual slope without even thinking about HA. I’m not trying to argue or anything it’s just my dumb little brain doesn’t understand what the issue is.

 

Unplug rear ABS sensor. I drove like that for couple months, until I replaced my rear ABS harness.

 

Is it the hill assist you don't like or maybe it's the clutch accumulator that is what is really causing your issues?

I've been driving manual vehicles for near 20 years and barely notice the hill assist, the second you touch the gas it lets go.
But what I did notice is the clutch accumulator is incredibly annoying because it automatically slips the clutch every time you shift.
I had a lot of trouble with hill starts and reversing that all disappeared once I deleted the accumlator.

 

My clutch shuddered when starting on steep hills and for the life of me I couldn’t downshift rev match with that POS on. I thought I forgot how to drive a manual.

With that thing removed, it acts just like any other normal clutch. No shudder and 90% of time perfect revmatch downshifts.

 

What is the clutch accumulator? I never heard of that although I think I saw another poster mention it. I have noticed a little weirdness when shifting but I'm petty sure it's the HSA I don't like. With the low 1st gear and the v6 I can easily start crawling forward without giving any gas but not if the brakes are still applied. It seems like I need to more than touch the gas to disengage the HSA but it is seeming that the solution is I need to figure out how to do that.

 

Sir, as soon as you start moving with HA on, brakes release immediately. They do not interfere whatsoever. You don’t need to “disengage” the brakes at all.

I really think the accumulator is your issue. It really makes it harder for experienced MT drivers.

 

https://www.tacomaworld.com/threads/mt-accumulator-delete-mod-adm-and-bs-thread.568303/

 

Well I can't start moving with HA engaged because the brakes are applied. If I'm moving then something has disengaged the HA either I gave it enough gas or the two seconds have expired.

 

That’s not how HA works. Brakes release immediately when you start moving. It will not hold your truck, it’s not intrusive at all. If HA in your truck doesn’t “release” the brakes and prevent you from driving then something is definitely wrong.

 

Wow I thought HSA was bad enough. Are there really that many newbies trying to learn a soon to be extinct transmission that Toyota has to ruin it with gratuitous technology for the rest of us? When I learned that Toyota still offered MT I thought 'they get it' but now I'm not sue they do.

 

Hah!

I would highly recommend removing that POS. Makes the clutch a lot more predictable and consistent. Also, I believe it will cause less wear on clutch without the accumulator.

 

But again it won't move with the brakes applied. I suppose if I give it enough gas it will move but then it's the proverbial unstoppable force and immovable object which probably ain't good for the clutch.

 

It doesn’t work like that. You are either experiencing something else or your HA is not working properly. HA is 100% non intrusive, it will not prevent you from moving.

 

You are definitely having some other issue than just the HA, the HA releases the very instant there is any power applied.
It works exactly the same, but better, than the old school method of using the parking brake or heel toeing for hill starts.

 

I had a Wrangler with HSA. On mine, a 2010 there was a way to disable it and there were lots of discussions over at the Wrangler forums complaining about it. Lots of people disabled it. I'm 64 and about 70% of the trucks and SUV's I've owned in my life were manuals.

The HSA is simply not an issue either way. It is probably a good feature for beginners, and if an experienced driver even notices it, they ain't using the clutch right. I didn't even realize my Wrangler had the feature until I read about it on the Wrangler forum.

 

I guess the problem is I've never needed to use the parking brake nor heel-toe for hill starts even on the steepest hills in Pittsburgh and there are some pretty steep ones. I ease out the clutch until it starts to grab and that is either enough to hold me on the hill or at least minimize the rollback. Then I feather the gas as I continue to release the clutch with makes for a graceful. start without over revving the engine. For vehicles I 'know' this is just one continuous motion. My problem is that while the HSA is engaged I'm not getting the feedback of rolling backward (steep slope) or rolling forward (gradual slope). But I will check to see how much gas it takes to disengage.

 

The accumulator is definitely causing your issues. It makes the clutch feel vague so you never know exactly when it will be fully disengaged.

I would think starting from rolling backwards is harder on the clutch and transmission than the fraction of a second the rear wheels have the push against the brakes on the front wheels at a stand still.
Personally I prefer making the brakes work harder than the clutch because brake pads are cheaper and easier to replace.

 

Yes, thank you.

 

Pretty sure you are experiencing inconsistent/unpredictable clutch due to POS accumulator. It’s a very strange feeling coming from a normal clutch vehicle.

 

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