LX570 AHC “Basics” - Added as sticky thread for AHC Issues

[rherrco]

Hey everyone. I’m having some issues after replacing accumulators. The whole system seems to be rock hard while driving. Like there’s rods in place of the suspension. I’ve bled the system multiple times, there’s zero air out of any of the 5 bleeders. Everything checks out on techstream. Has this happened to anyone before?

Any help is appreciated. Thanks

Yep. Same thing. Even had a repair shop double check to see if switch was working. Rides stiff in all settings, but fully loaded, feels about right. I have no idea what’s wrong.

 

[Nothinghead]

Hey everyone. I’m having some issues after replacing accumulators. The whole system seems to be rock hard while driving. Like there’s rods in place of the suspension. I’ve bled the system multiple times, there’s zero air out of any of the 5 bleeders. Everything checks out on techstream. Has this happened to anyone before?

Any help is appreciated. Thanks

Yep. Same thing. Even had a repair shop double check to see if switch was working. Rides stiff in all settings, but fully loaded, feels about right. I have no idea what’s wrong.

I have not read of this happening to anyone else. What happens when you change driving modes (eg. comfort, sport S, sport S+)? Also, what do you mean "fully loaded?"

 

[rherrco]

I have not read of this happening to anyone else. What happens when you change driving modes (eg. comfort, sport S, sport S+)? Also, what do you mean "fully loaded?"

Loaded with about 400lbs of cargo. No discernible difference in driving modes.

 

[nwfl4runner]

Loaded with about 400lbs of cargo. No discernible difference in driving modes.

Have you cycled heights and driven around in each mode? Ie, drive around in low, then high, then normal

 

[grinchy]

How much sensor lift do you have @rherrco? If possible remove all sensor lift and see how that feels.

 

[rherrco]

Have you cycled heights and driven around in each mode? Ie, drive around in low, then high, then normal

I changed the globes over a year ago.

 

[rherrco]

How much sensor lift do you have @rherrco? If possible remove all sensor lift and see how that feels.

I messed with the sensors only enough to even out the height. IIRC, only adjusted the DF, but even when I first got the LX about five years ago, there was no discernible difference in the modes. The PO even mentioned that when I test drove it. At that time it had about 100k on it. Now I’m at 135k.

 

[nwfl4runner]

I messed with the sensors only enough to even out the height. IIRC, only adjusted the DF, but even when I first got the LX about five years ago, there was no discernible difference in the modes. The PO even mentioned that when I test drove it. At that time it had about 100k on it. Now I’m at 135k.

There's an active test you can run in techstream to see if the damping actuators are actually being activated. Go to Chassis/AHC/Active Test and you can test each one. See if you are able to run them each through the motions.

 

[rherrco]

There's an active test you can run in techstream to see if the damping actuators are actually being activated. Go to Chassis/AHC/Active Test and you can test each one. See if you are able to run them each through the motions.

Sounds like a plan. Now all I have to do is find a shop with Tech Stream.

 

[paulunm]

There's an active test you can run in techstream to see if the damping actuators are actually being activated. Go to Chassis/AHC/Active Test and you can test each one. See if you are able to run them each through the motions.

I assume this active test is not something you can do with one of the non Techstream scanners (in the other thread)?

Thread 'Handheld Techstream Alternative Found!'

Jan 4, 2025

First off…

Huge thanks to @misteracng for bringing this to my attention. Figured I’d share as many will likely benefit from it.

I got zero interest in needing a laptop to make tweaks to my truck...

Got it to try to disable the auto telescoping steering wheel, figured it was on Amazon, so if it didn’t work would just send it back

But it worked, and the more fiddling I’ve done with it, the more features I’ve found that I couldn’t access with Carista.

Can also program TPMS

The instructions are basically non-existent and not much online help either, and it’s not all that...

• Boston Mangler
• Replies: 296
• Forum: 200-Series Cruisers

• 
• 
• 

Would be a lot easier than Techstream!

 

[nwfl4runner]

I assume this active test is not something you can do with one of the non Techstream scanners (in the other thread)?

Thread 'Handheld Techstream Alternative Found!'

Jan 4, 2025

First off…

Huge thanks to @misteracng for bringing this to my attention. Figured I’d share as many will likely benefit from it.

I got zero interest in needing a laptop to make tweaks to my truck...

Got it to try to disable the auto telescoping steering wheel, figured it was on Amazon, so if it didn’t work would just send it back

But it worked, and the more fiddling I’ve done with it, the more features I’ve found that I couldn’t access with Carista.

Can also program TPMS

The instructions are basically non-existent and not much online help either, and it’s not all that...

• Boston Mangler
• Replies: 296
• Forum: 200-Series Cruisers

• 
• 
• 

Would be a lot easier than Techstream!

I wish, best option is one of the Amazon tech stream dongles for like $25

 

[skymast]

I just replaced my globes as well. I really didnt pay that much attention to the modes but is there a meaningful difference between Comfort and Sport?

 

[rherrco]

I just replaced my globes as well. I really didnt pay that much attention to the modes but is there a meaningful difference between Comfort and Sport?

No difference for me, but others claim a noticeable difference.