Thanks for this posting. I do have a question. I would like to do a sensor lift. I do not tow or load the rear with anything too heavy at all. Do I need to add the spacers? Can I just adjust the sensors and be OK?
LX570 AHC height modifications (lift it!) (3 Viewers)
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nwfl4runner
GOLD Star
Spacers will merely reduce pressure on the AHC to maintain whatever the specific height is. I have the OEM LX rear coil spacers in right now.
Thanks for the response - Do you think I need to do this techstream computer stuff I see people writing about?
My field of expertise is not trucks etc.. I have seen some people write that they just simp[ly adjusted the sensors in the driveway. Easy. Other people write that they are putting in spacers, and resetting via techstream and more. It makes me feel as if I adjust the sensors only, I am going cause an issue.
My garage here in Phoenix doesn't know the LX570 well enough and I got to communicate the instructions to them.
I'll try to clarify things for you:
1. There are two ways to perform the AHC lift. One is to reposition the sensors on the mounting brackets. The other is to use Techstream to change the default/neutral position of the AHC suspension. Both achieve the same thing.
2. AHC is a hydraulic system; it uses suspension fluid to adjust vehicle height. By performing the AHC lift, you end up with higher than normal pressure in the shocks. Higher pressure affects the overall "weight carrying capacity" of the system. The purpose of the spacers is to pre-load the springs and thus take away a bit of that pressure, lowering it to more-or-less normal numbers (as if you didn't do the AHC lift).
3. You can drive around just fine without spacers, but your overall weight carrying capacity may be affected. Whether (or not) that's an issue depends on your use case.
Folks, please correct me if I've gotten anything wrong.
No need for Techstream if you just want to move the sensor brackets. You can actually move the sensors while the rig is on to get real-time measurements, but I would start off with the simple instructions that you've probably already found.
You only need Techstream if you want to fine tune with the offset utility, or add an additional 3/4" on top of the max bracket adjust, or if you need to diagnose pressure issues etc.
Thanks for those responses Radman & Eatsleepwolf. That does clear things up a bit. I'm not going to be loading this truck too heavy. I think the sensor lift alone would be fine. It is a cosmetic thing but i would also like to go faster on some of these Arizona desert dirt roads and forest roads while having a higher ride height.
You should be fine. I had a basic sensor lift with no spacers with front and rear bumpers, roof rack etc loaded up fully and AHC handled it fine. I have since added rear spacers just to be safe and have spacers to add to the front someday but I believe the system is quite underrated by Toyota for understandable liability reasons.
I used to have a sensor lift with no spacers for a while and its look and feel is definitely great.
One thing to consider: the height change will need a wheel alignment.
I recently installed heavy bumpers + winch...so I decided to go with rear spacers (and soon front ones too) in order to release some pressure from the AHC system.
In your case, a sensor lift would not need any spacer and it will still be very reliable.
One thing to consider: the height change will need a wheel alignment.
I recently installed heavy bumpers + winch...so I decided to go with rear spacers (and soon front ones too) in order to release some pressure from the AHC system.
In your case, a sensor lift would not need any spacer and it will still be very reliable.
Hey, I appreciate the advice. Yes - I had planned on a wheel alignment after the sensor lift. It is great to hear from people who have done this. I can't wait to do it.
kms254
SILVER Star
How “off” is the alignment after a sensor lift? I’m considering doing it for LCDC but times running short and I’m not sure if I can get an alignment in time? All trails are fairly local so I won’t be driving 1000s of miles.
I’m the idiot that didn’t budget for an alignment and ran it for 10k miles, maybe more before forking out the money to firestone for a lifetime alignment plan, so I can chime in here.
For first few thousand miles it did not bother me enough to rush the alignment, as most of the difference I felt was in “high mode”, where the turning radius was definitely noticeably wider. If I tried to cut the wheel all the way left, it felt like something was getting a little stuck in between each full spin of the wheel, and it would sorta jerk/hop a little bit briefly. I stopped making really tight (as in cut wheel all the way left) turns after that, and made slightly less tight turns in high mode, and now that I am aligned I can make tightest turns again. Thats for off road and high mode.
On the pavement/highway it obviously veered a little bit, in my case to the left. First few thousand miles it did not bother me, but as tires wore down unevenly, the problem progressively got worse. Then I really kept pushing it and now my tires on the front are basically bald on the outside and still plenty of tread on the inside.
So a little bit, like a few hundred miles on pavement won’t do result in something noticeable, and if you take it easier on the tight turns on the trial while in high mode, you’ll be fine. Then again, I think me having stock street tires had a lot to do with the “jerking” effect in between each full articulation of the wheel/suspension when making the tightest turns, due to wheel sitting so much lower than rest of car, so if you have bigger tires I think you will be less affected by this.
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Hey I just checked and my video got 2k views! And 7 subs! Too bad I don’t plan on keeping that YouTube account and plan on redoing video, as that one was made with a phone app in less than 15 mins as a quick guide for a few members on here.
Does anyone have the part number for the rear 30mm spacers, I did the sensor lift and 285/70/18 and want to preload springs. Hopefully someone will figure out a spring with slightly higher spring rate to replace the rears completely.
I reckon comfort lifted 200 series springs would work if you plan on adding a rear bar and drawers etc
I would if anyone knows the sting rate for our factory lx springs?
I’m not familiar with the OE LX rear spacers. What year/application received them? Edit, found em, 48373-60010
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Thank you for the part number but it doesn’t say anywhere the size. Are you sure they are 30mm?
No, they are just 10mm
I just sent you a message.
One more quick question. Does the normal mode still feel normal? In high mine feels much stiffer. Does that make sense?
