Does anyone know if the EPS / Steering rack on the GX550 is the same as the ones on Tundra / Sequoia? I am in the process of modding my GX460 to the EPS unit via custom fab & minor tweaks as necessary. If the parts are identifical to Tundra, then I don't have to wait for the GX550 to be rolled out and sold in volumes. Any info (confirmed info) would be appreciated.
GX 550 steering rack - Same part as Sequoia & Tundra? (1 Viewer)
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Part numbers have not been released yet so no one from the public will know exactly if they are the same etc.
Used example of '22 or '23 Tundra EPS rack for those that haven't seen it
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Used GX 460 example:
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Used GX 460 example:
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@Jetboy
forum.ih8mud.com
Anyone done a power steering swap to the GX? - Needed for Comma Ai
I have a 23 Luxury w/ Offoad + every option available. Knew it was the final V8, and wanted to make sure I own this piece as a forever truck, drive it till it does thing.. For those who don't know, Comma Ai is a plug & play level 2 self driving system. I have it on my 22 Ram 3500, and and it...
forum.ih8mud.com
That'll be cool if you can make it work. Looks like a challenging process to get it to fit.@Jetboy
Anyone done a power steering swap to the GX? - Needed for Comma Ai
I have a 23 Luxury w/ Offoad + every option available. Knew it was the final V8, and wanted to make sure I own this piece as a forever truck, drive it till it does thing.. For those who don't know, Comma Ai is a plug & play level 2 self driving system. I have it on my 22 Ram 3500, and and it...
- Thread starter
- #8
Good question. Fo me, it's 3 things.
1. GX460 gets high praise due to being all mechanial / hydraulic steering. For me, it's too stiff.
2. My 23 GX will be converted to do more heavy off-roading. I'm sure the standard rack is beefy enough, but many convert their racks to that of previous land cruise or Tundra racks for added strength and off-road reliability.
3. *** HUGE BONUS *** I live in the east, and much of my adventures are out in the west. I will be working with a developer to install Comma Ai. It requires 2 things only to work. a. Adaptive Cruise b. Must have EPS which can be controlled via Can Bus. For my 23 GX460 Luxyury w/ Off-Road Package, I have this, and only needs a EPS and comma ai will do the rest via CanBus
I have Comma Ai & Open Pilot installed on my 22 Ram 3500 high output AEV Prospetor XL, Lexus LC 500, and Honda Civic so far. The 'true' / full Level 2 autonomy driving powered by self-learning Ai is incredible / glorious. I don't use it everyday, but for loooooong highway drives, it's incredibly stable and drives better than me. Once you go this route, you can't go back. eat up thousands of miles on the interstate to get to my destinations. During the last 2 years alone, I've put in 56,000 miles on my Prospector XL exploring West, Canada & Alaska. Could not have done it without Comma Ai's auto-pilot system (using "Sunny Pilot" fork of Open Pilot). It's all open-source.
Latest software releases support full stop n go + stop light (stop / resume) + stop sign handling & full visual only lateral control (no radar needed). My search for an appropriate EPS steering rack for the GX460 search began last year, and looking to work with fab shops if necessary to install the EPS (likely needs mouting brackets and adpators). With the GX550 announcement, I've decided to hold off until we learn more about the GX550 steering rack to see if it would be a better rack more suited for the GX460 retrofit. If it isn't, given the same TNG flatform, then I won't have to wait too long, and just go with the Tundra steering rack (which already supports LTA). For those not familiar with the Comma Ai, here is proof of concept full end to end self driving demo (not fully available for all vehicles). If they can convert a Volkswagen Scooby-Doo van to full autonomy using Comma Ai, GX should be breeze. Just needs an EPS (if you have adaptive cruise) - Soon, once it goes full visual lateral control, then most likely you won't even need the adaptive cruise.
As I mentioned, I have this instlled on 3 cars now. Currently workng on my MDX Type S (23 model). I want to complete the conversion for the GX before the summer. That's the goal.
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- Thread starter
- #9
Used example of '22 or '23 Tundra EPS rack for those that haven't seen it
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Used GX 460 example:
Thank you so much for those pics! Looks similar in size to that of the land-cruise racks. I am feeling optimistic!
- Thread starter
- #10
May I ask why you have all these detailed pics of the Tundra EPS & GX460 racks? Are you also in the process of swapping it out?Used example of '22 or '23 Tundra EPS rack for those that haven't seen it
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Used GX 460 example:
No swap for me… just a comparison to see the general differences between hydraulic and EPS rack.
Does comma ai have support for the 22+ tundra? It’s not listed on their website.
- Thread starter
- #13
Unfortunately, newer Tundras are affect by TSK (Toyota Security Key). I believe Comma has been working on this for a while now. This has nothing to do with th EPS controller or the motor, but the issue is that Toyota has been gradually locking out the ECMs. I do not believe that the older GX models are affected, but it's highly likely that the GX 550 is also doomed for now until they crack it. Here is the github progress tracking site
openpilot/etc. on Toyota/Lexus/Subaru with TSK/ECU SECURITY KEY 🔑 / SecOC (e.g. RAV4 Prime/PHEV, 2021+ Sienna, 2021+ Venza, 2020+ Yaris, 2022+ NX, 2022+ Tundra, 2023+ Sequoia, NA Corolla Cross, bZ4X, Solterra, 2023+ JP-made (?) Corollas, ALL 2024+ Co
1 Toyota's Sword in Rock situation (that has been pulled out quite a bit by Willem!) 📃 Background/Wiki with a list of affected vehicles: What is Toyota Security Key What Toyota vehicles appear to h...
github.com
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- Thread starter
- #14
I am 98% confident that all GX460 models (with ACC) will work. I am willing to take the plunge. I seriously doubt that Toyota went through the trouble to swap the ECU, lock it out, and re-test the entire vehicle parts chain just to add Apple Carplay for the 22/23 models. Just need to yank out the hydraulic steering (much cleaner), and slap on the EPS unit, plug it into the Canbus. Once steering is working (don't see why it won't), Comma will send steering commands via Canbus to the EPS and we're in business.
Worst case scenario, if Toyota actually did lock out the 22/23 GX 460s, I'd just end up with the EPS steering for now (what I prefer anyway), and wait for devs to crack it. But again, I'm pretty confident I'd be set here. Hardest part is to work with the mod / fab folks to create necessary brackets, mounts & adaptors. I wouldn't do this if this wasn't going to be my forever car...
Waiting for the GX550 to be released to see if it's indeed the same Tundra part or not.
Worst case scenario, if Toyota actually did lock out the 22/23 GX 460s, I'd just end up with the EPS steering for now (what I prefer anyway), and wait for devs to crack it. But again, I'm pretty confident I'd be set here. Hardest part is to work with the mod / fab folks to create necessary brackets, mounts & adaptors. I wouldn't do this if this wasn't going to be my forever car...
Waiting for the GX550 to be released to see if it's indeed the same Tundra part or not.
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