LS - 3rd Gen (2001-2006) Discussion topics related to the flagship Lexus LS430

HELP - Switched from air to steel suspension

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Old 12-14-13, 09:28 AM
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jmscott
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Default HELP - Switched from air to steel suspension

Now "HEIGHT HI" warning illuminated. What happened? I know that the strut actuators were removed, by my belief is that these switch the strut's damping mode to sport, and have nothing to do with ride height.

It would help if I could point these guys in the right direction...

(will post thoughts on steel coils vs. air in other posts when I've gotten these bugs worked out)

TIA.
Old 12-14-13, 03:01 PM
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yuri.ber
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Check if an air compressor fuse was taken out.
Old 12-14-13, 05:55 PM
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jmscott
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Was told that this was done (per my suggestion) but have not verified.
Old 12-14-13, 07:37 PM
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Kira X
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I have the same thing on my dash after I switched to coilovers. I was doing some searching and read a post saying there were TWO fuses for the air suspension. I haven't checked to see if that was true yet.
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Old 12-14-13, 10:19 PM
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Kira X
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According to post #35 in this thread there is two fuses.

https://www.clublexus.com/forums/ls4...ion-infos.html
Old 12-25-13, 03:18 PM
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jmscott
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OK. Took the car back to the shop for a few days, and now not only do i have the HEIGHT HI warning, but also VSC warning cycling on the dash & TRAC OFF (and won't come back on).

The main airsus fuse is intact, and the compressor fuse is removed.

This thing is like driving a christmas tree with all of the warning lights. Gotta get to the bottom of this. B/C I cannot stand to drive it, and no one in their right mind would buy it.

Any help would be apopreciated!
Old 12-25-13, 03:48 PM
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Lavrishevo
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From what I understand, you can't unplug and remove the height sensors otherwise you will get these errors. The only thing to be unplugged is the air compressor either at the compressor itself or the fuse.
Old 12-25-13, 03:50 PM
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jmscott
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I've been told that all is intact & that if I ever needed to return to air all that's necessary is to install air shocks & reconnect the compressor's fuse.
Old 12-25-13, 03:51 PM
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Kira X
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That's interesting. One of my height sensors was actually never hooked up. It never gave me an error until I switched to coilovers. Maybe i can hook it back up. And it will go away.
Old 12-25-13, 04:02 PM
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Lavrishevo
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The faq sticky mentions this. Some info on the last page too.

https://www.clublexus.com/forums/ls4...ion-infos.html

No warning light or message what so ever, like I said before, all I did was pull the air compressor's fuse, so the air compressor is disabled now. I am guessing if I unplug or pull the air suspension ECU's fuse, that would trigger some kind of warning light or message. All I care is to disable the air compressor, so this is good enough for me. The air suspension ECU can think all he wants The air compressor's fuse is in the fuse box right next to the battery in the engine compartment. Look in the back of the fuse box cover to see the location of the fuse, it is the 2nd small one from the right.

Last edited by Lavrishevo; 12-26-13 at 04:39 PM.
Old 12-25-13, 09:27 PM
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chrispy
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When I took my stock air suspension out I left all the sensors intact and only removed the green air compressor fuse. I don't have any errors or issues.
Old 12-26-13, 04:24 PM
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94GS300
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I converted mine over a few years ago and I have not had any lights come on as a result. Like a few others said, I left all sensors electrically connected but just took out the compressor fuse and it works like a charm.
Old 12-26-13, 07:13 PM
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I'll have to find that sensor. I hope I didn't throw it away.
Old 11-15-17, 08:33 AM
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mrpowerzz
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Originally Posted by 94GS300
I converted mine over a few years ago and I have not had any lights come on as a result. Like a few others said, I left all sensors electrically connected but just took out the compressor fuse and it works like a charm.

Could you send a photo of the fuse? or at least quote the amperage? size of fuse?
Old 11-15-17, 09:35 AM
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mrpowerzz
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Originally Posted by chrispy
When I took my stock air suspension out I left all the sensors intact and only removed the green air compressor fuse. I don't have any errors or issues.
could you send a photo?
what was the amperage?


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