2010 GX 460 Airbag Delete error (1 Viewer)

[funnyfingers]

Hello,

2010 460 airbag delete done but have this message. “Check Air Suspension System” and a orange triangle with an exclamation point.
Removed Air Sus 50A and Air Sus Fuse #2

 

[KJ6IRM]

Does anyone know what suspension components the Suspension Control ECU controls (air springs - shocks - KDSS)? What I'm curious about if removal of the ECU will have an effect on KDSS? I was under the impression that changing the shock settings (Soft - Normal - Sport) also changes the KDSS behavior to match, though I could be wrong.

 

[funnyfingers]

Unplugged ECU, still have message

 

[funnyfingers]

That seems to be plugged in, headlights appear to be operating as they should but I do have to adjust them to compensate for the lift.

 

[Acrad]

This is what has been determined so far from a GXOR thread. If you have a AVS/RAHC model ----> '10-'13 Premium and '14+ Luxury and you intend to put a lift on it which removes the bags and shocks you need to do the following:

• Do not remove any fuses related to the suspension system
• Do not remove any relays related to the suspension system
• Do not disconnect the Suspension ECU
• Do not disconnect the RAHC air compressor
• Do not remove the rear suspension height sensors. This may trigger an AFS error on the dashboard display. You may need to adjust them after lift to ensure headlights are aimed correctly though.

 

[tingfdny]

This is what has been determined so far from a GXOR thread. If you have a AVS/RAHC model ----> '10-'13 Premium and '14+ Luxury and you intend to put a lift on it which removes the bags and shocks you need to do the following:

• Do not remove any fuses related to the suspension system
• Do not remove any relays related to the suspension system
• Do not disconnect the Suspension ECU
• Do not disconnect the RAHC air compressor
• Do not remove the rear suspension height sensors. This may trigger an AFS error on the dashboard display. You may need to adjust them after lift to ensure headlights are aimed correctly though.

you're right!! i didnt have to unplugg anything other than air lines to the bags and no codes

 

[AwgustLab]

So I bought a 2013 with a lift and rear air bag delete, and it also has this message on the dash. Has there been an easy fix determined here on MUD that I have not been able to find thus far? Thanks!!!

 

[Acrad]

- Rear height sensors need to still be in place. Some use washers to help in adjustment. I'll see if I can track down pics here or on CL. Those rear height sensors are also used for you HID auto leveling.

- Do not remove any relay, fuses or ECUs. 470 instructions are not the same.

- Compressor or at least the core electric pieces to trick ECU needs to stay connected

 

[Acrad]

KJ6IRM posted details here and on CL

Post #32 here

How do you disable dash lights after removing air suspension/AHC? - ClubLexus - Lexus Forum Discussion

GX - 2nd Gen (2010-2023) - How do you disable dash lights after removing air suspension/AHC? - Posting for a friend who doesn't have good internet skills... He just lifted his 2011 GX 460 Premium with Old Man Emu springs and shocks and removed the rear air suspension with the help of the...

www.clublexus.com

 

[AwgustLab]

- Rear height sensors need to still be in place. Some use washers to help in adjustment. I'll see if I can track down pics here or on CL. Those rear height sensors are also used for you HID auto leveling.

So what I read in that thread you posted, it seems that approximately 1 cm of washers for a 12 mm bolt is the trick to get the "check air suspension message" off your dash. Adding these also helps with the auto leveling of the headlights when driving (which I was not aware even existed haha).

 

[KJ6IRM]

So what I read in that thread you posted, it seems that approximately 1 cm of washers for a 12 mm bolt is the trick to get the "check air suspension message" off your dash. Adding these also helps with the auto leveling of the headlights when driving (which I was not aware even existed haha).

That, and that you need to leave all of the air suspension pieces in place (except the air bags, the rear shocks, and the front struts and front strut controllers).

 

[AwgustLab]

After the washers have been added, is there some sort of reset you need to do? I've got all my washers on (including longer bolts) but the message is still displayed on the dash.

 

[Acrad]

Do you have Techstream or OBDLink handy? You could pull codes to isolate what it is still unhappy about.

 

[Acrad]

••WARNING: I have never done this myself so I urge extreme caution as this is just what is printed in FSM. Proceed at your own risk.

••WARNING2: Pay careful attention to the OBD port. In actuality it is upside down under the dash and not same orientation

The codes for missing AVS shocks will be unavoidable. They will always show up in a scan tool as well with them removed.

Flash pattern legend

How to get into this mode

Numbers after "/" are the blink patterns

 

[KJ6IRM]

After the washers have been added, is there some sort of reset you need to do? I've got all my washers on (including longer bolts) but the message is still displayed on the dash.

Nope, I just added the washers after I did the suspension install. Every lift will be different. You want the level sensor to be level. If you have more lift than I do (Icon 2” rear coil springs) then you’ll need more washers (edit and longer bolts

edit: check the pictures on my CL post and you can see what I mean by the level Sensor arm is level.

 

[AwgustLab]

Nope, I just added the washers after I did the suspension install. Every lift will be different. You want the level sensor to be level. If you have more lift than I do (Icon 2” rear coil springs) then you’ll need more washers (edit and longer bolts

edit: check the pictures on my CL post and you can see what I mean by the level Sensor arm is level.

Damn, I thought I was good with 5/8" of washers and longer bolts. I suppose I will try a little longer bolts and more washers and see if that works, With the amount of people who have deleted air bags and installed new springs/shocks to lift it, it would not be such an undocumented fix to this issue. But I do appreciate your contributions in trying to help, both here on Mud and on ClubLexus. I'll keep stabbing at it and see if I can tackle it once and for all.

 

[r2m]

Damn, I thought I was good with 5/8" of washers and longer bolts. I suppose I will try a little longer bolts and more washers and see if that works, With the amount of people who have deleted air bags and installed new springs/shocks to lift it, it would not be such an undocumented fix to this issue. But I do appreciate your contributions in trying to help, both here on Mud and on ClubLexus. I'll keep stabbing at it and see if I can tackle it once and for all.

Instead of using so many washers, try using unthreaded spacers: McMaster-Carr - https://www.mcmaster.com/unthreaded-spacers/
I don't know what your bolt diameter is, but maybe a section of steel tube cut to length?

 

[Acrad]

Height control adjustment parameters

IMO: Get within 2.3-2.6V range since over 18-19MPH it defaults to this range.

 

[r2m]

What timing!
I just started thinking about this again today! Now that I've solved the TPMS light on my dash, I'd really like to fix the AFS light also!

 

[r2m]

Height control adjustment parameters

IMO: Get within 2.3-2.6V range since over 18-19MPH it defaults to this range.

View attachment 2744027

There IS only one AFS senosr, in the right rear of GX's, correct??
I just did this test and my AFS sensor is working, well very close.
I'm reading:
High 45°: ~4.28 (outside tolerance, a little on the low side)
Normal 0°: ~2.5 (within tolerance)
Los -45°: ~.47b (within tolerance)

So even though my high is is a little off, that shouldn't cause my AFS light to default on all the time, right??