Service fee refund a nice bonus. Interested to see what toys you get for rig with it.
Builds eatSleepWoof's '14 LX
- Thread starter eatSleepWoof
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- Thread starter
- #222
I have a tire installation appointment today at 2pm. That refund will pretty much cover the entire tire set.
Glad you finally got this sorted out. What a frustrating experience. Did they ever say what the final solution was?
- Thread starter
- #224
Yes, and no.
This is (my understanding) of what took place:
1. Brought in a fully functioning vehicle.
2. AHC fluid was exchanged. I don't know the details of how it was done this (first time), and suspect it was done improperly. They may have gotten contaminants into the tank/pump/lines/etc.
3. They determined my (original) AHC pump was producing some pressure, but not enough pressure to lift the LX. Again, I want to re-iterate that this worked 100% before I brought it in.
4. They installed a new AHC pump, to no avail.
5. They determined that the new AHC pump was defective.
6. They installed another new AHC pump, and everything started working.
So the final solution was installation of a new (working!) AHC pump. But it is not definitively known what happened in step #2 to cause my original AHC pump to fail.
What tires are you getting?
- Thread starter
- #226
Finally got 33s mounted. Falken AT3W in 275/60/20. @gaijin - can I bug you for recommend cold pressure on this set?
Photos in low suspension mode.
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Unrelated to tires, the passenger side seems to be sitting approximately a half inch higher than the driver's side. I've noticed this before, too. Not sure what the deal is with that. I'll likely level it out with the AHC sensors in the next week or two.
Photos in low suspension mode.
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Unrelated to tires, the passenger side seems to be sitting approximately a half inch higher than the driver's side. I've noticed this before, too. Not sure what the deal is with that. I'll likely level it out with the AHC sensors in the next week or two.
Looks like the right choice!Finally got 33s mounted. Falken AT3W in 275/60/20. @gaijin - can I bug you for recommend cold pressure on this set?
Photos in low suspension mode.
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Unrelated to tires, the passenger side seems to be sitting approximately a half inch higher than the driver's side. I've noticed this before, too. Not sure what the deal is with that. I'll likely level it out with the AHC sensors in the next week or two.
I had a low corner to, adjusted that one up, and then the other two as well (but less). About 10 min of trial and error. Also tried to fix via techstream in the AHC offsets; wasn't as successful there.
gaijin
GOLD Star
Sure! The RCTIP for those ISO-Metric 275/60R20 SL 115T tires on your LX570 is 30psi F/R.
HTH
- Thread starter
- #229
thank you very much!
- Thread starter
- #230
Measured my fenders all around. Front is perfectly even side to side. Rear driver's side is a full inch lower than passenger side. I've been noticing a lean for a while and asked the dealer to investigate during the initial service, but they said everything was normal (not surprisingly).
I wonder if one of the AHC sensors might have gotten loose and slid down on the mount... will have to investigate soon.
I wonder if one of the AHC sensors might have gotten loose and slid down on the mount... will have to investigate soon.
I'm no pro, but I've learned way more about AHC than I ever planned to. I would bet $5 on this chain of events:
1) When they "flushed" the first time, they did it improperly and took out too much without starting the rig to let the ahc pump refill the accumulators. this set off a "low pressure" error. Either they cleared the error and called it a day, or you set off the error when you cycled those first few times.
2) The tech notes indicate the same error. "c1763". Here's a thread where someone cleared that error and the ECU eventually told the ahc pump to start. one could also go into techstream and perform a ACH pump check to force the pump to start.
SOLVED Help with AHC stuck in low position
So my LX is currently stucked in Low position. It is actually working in great condition, so I started out by bleeding the system. Follow the bleeding procedure with vehicle set in N position. Then sucked out all the old fluid from the reservoir, refill with new fluid. Bleed the front left...
forum.ih8mud.com
3) Maybe they didn't know these tricks, and assumed the pump was bad. When they put the new pump in, the ecu still wouldn't fire up the pump until it was satisfied about that c1763 code.
4) Same goes when they put your original pump back in the second (or 3rd time)?
5) Maybe they finally figured out the issue and got one of the 3 pumps working.
here's what I would check:
1) Take a sample of your ahc fluid from driver front accumulator. If it's not rosey pink, wow. After all those pumps, there better not be a hint of black fluid. Try to get 6oz for a good sample.
2) Check all 5 bleeders to make sure the rubber caps on still there, if they are there, make sure they look like they have been removed.
3) Make sure the filter screen is in the reservoir tube. There's no massive "debris" in the system that could ever break lose and kill a pump, but that screen is there to filter the fluid when you lower and it makes it's way back to the reservoir.
Here's a link on how you can use techstream to add height to your low corner, or you can physically move the sensor. If you decide to move the sensor, you can go "trial and error" or you can do it while the rig is on (doors closed) and have someone hold a tape measure while you slowly move the bracket.
AHC Height Offset Utility How-To
Height Offset can adjust a maximum of .8", so you move the physical sensors first, and then you have .8 to play with. 1mm of movement on the sensor equates to 2mm on the rig. In theory, assuming there’s enough stoke in the shocks, you might be able to add .8” on top of the “sensor lift” method...
forum.ih8mud.com
About your rears being 1" apart, if you move the brackets, I've noticed that both sides may move so check them both after you adjust.
Also, why in the world did they disconnect your rear seatbelt??
Let me know if you need any help or have any questions.
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- Thread starter
- #232
@radman - thank you for the details and ideas.
I'm trying to level out the rear, and have come across very strange behaviours.
When I did the AHC lift, I moved both rear sensors all the way up, and both fronts all the way down. When I got under the truck today, I saw that the rear driver's side was moved all the way down, and the front passenger side was moved, too.
I repositioned all sensors to the "middle" (stock) position, and vehicle height is now all over the place. There is more than a 2" difference in the rear, and more than 1" in the front. Basically the truck is all over the damn place.
I have no idea why they messed with the AHC sensors, not why they removed the seat belt. I've got 9hrs of driving to do tomorrow, including with a trailer I'm about to purchase, and need to get the vehicle level ASAP. Going back to it now.
I wonder if they might have changed settings in Techstream, in addition to repositioning the sensors? This was definitely not "so" before.
I'm trying to level out the rear, and have come across very strange behaviours.
When I did the AHC lift, I moved both rear sensors all the way up, and both fronts all the way down. When I got under the truck today, I saw that the rear driver's side was moved all the way down, and the front passenger side was moved, too.
I repositioned all sensors to the "middle" (stock) position, and vehicle height is now all over the place. There is more than a 2" difference in the rear, and more than 1" in the front. Basically the truck is all over the damn place.
I have no idea why they messed with the AHC sensors, not why they removed the seat belt. I've got 9hrs of driving to do tomorrow, including with a trailer I'm about to purchase, and need to get the vehicle level ASAP. Going back to it now.
I wonder if they might have changed settings in Techstream, in addition to repositioning the sensors? This was definitely not "so" before.
Seatbelt has to come off to take off quarter panel trim to change AHC ecu. Same with the missing foot trim.
dont worry @eatSleepWoof we can get it level again.
id start with putting the sensors back to standard and cycling the battery.
and I suggest you eBay A tech stream cable and start looking for a way to host the software.
dont worry @eatSleepWoof we can get it level again.
id start with putting the sensors back to standard and cycling the battery.
and I suggest you eBay A tech stream cable and start looking for a way to host the software.
Yikes!
I would go back to the sensor lift you had (Fronts down, rears up), then work out the difference with offset utility.
- Thread starter
- #235
Thanks, guys.
I've been fighting the height, trying to get it level, for about the last two hours.
Best I've got is the front being within 1/4" of each other, and still about 1.5" of height difference in the rear.
I tried putting all sensors into their stock position, and ended up with 1" of difference in the front, and 2" of difference in the rear. I tried putting the sensors into the AHC lift position, and also ended up with a huge mess. They clearly changed values in Techstream and did not return them to the originals. I now have no baseline of stock position, and no way to level anything out. My driver's side rear is 1.5" lower than it needs to be, and cannot go higher as it's maxed out on the sensor. I also can't lower the passenger side rear, as it's as low as the sensor will allow.
Going to be sending the dealership another email right now. They mentioned taking the truck to some local guy that used to be their master tech, and is an "LX and AHC genius," who now runs his own shop. No idea who that guy is, but I want him to tackle this round of problems. The dealership's clowns will not touch this vehicle again.
I've been fighting the height, trying to get it level, for about the last two hours.
Best I've got is the front being within 1/4" of each other, and still about 1.5" of height difference in the rear.
I tried putting all sensors into their stock position, and ended up with 1" of difference in the front, and 2" of difference in the rear. I tried putting the sensors into the AHC lift position, and also ended up with a huge mess. They clearly changed values in Techstream and did not return them to the originals. I now have no baseline of stock position, and no way to level anything out. My driver's side rear is 1.5" lower than it needs to be, and cannot go higher as it's maxed out on the sensor. I also can't lower the passenger side rear, as it's as low as the sensor will allow.
Going to be sending the dealership another email right now. They mentioned taking the truck to some local guy that used to be their master tech, and is an "LX and AHC genius," who now runs his own shop. No idea who that guy is, but I want him to tackle this round of problems. The dealership's clowns will not touch this vehicle again.
I can help you make sense of the offsets in techstream. Do you have a cable?
- Thread starter
- #237
Unfortunately not.
To make matters worse, tomorrow I have to drive 550km (one way), and then come back (with a trailer) on Sunday. Truck is drivable, but as they changed the vehicle height, it now needs an alignment. Have already fired off a lengthy email to the service advisor, and have told them that if these tires show uneven wear by the time I get home, they will need to get a me a new set. And told them to start thinking about putting me into a comparable, replacement LX.
Honestly, 1/4" between the fronts is amazing. You should be good to go on the drive, and rears won't wear unevenly.
I’ve found that changing heights in the driveway isn’t repeatable. You’ll find that the truck will level out if you drive a couple km. And I had good luck also cycle l to h and back to n. It does settle on a set after a bit. Then you can adjust again.
