Lexus GX 2004-09 :: GX470 - Rear Height Control Failure
Apr 21, 2015
I'm the owner of GX 470 2006 85 k miles, facing a problem of height control failure. The problem started some few months ago while starting the car. I there was a noise behind on the height compressor. Took it to my mechanical and the noise disappeared because the compressor wasn't well fixed to the body. Since then i'm not able to adjust the height of the car. The car remains at the height low level and jumping dangerously each time i drive it inside a hole. Decided to go back to the mechanical the following code error appeared during the diagnosis: P1445. How can this code be related to the height control system when we know that this code is related to the secondary air injection system switching valve?
I decided to change the 2 height sensors located on the R and L rear side of the vehicule and the VSV locate in the engine. The problem remains. Now the dashboard keeps the green light at N and the button to raise and low the height of the car is not responding. More the mechanic can't anymore obtain the errors code from his diagnosis device.
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Air suspension stay on HIGH position, the SELECT button is showing on NORMAL. I try to push UP or DOWN, the green led indicator doesn't respond, just stay at NORMAL position and NO flash at all.
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I own a 2004 GX470 and am recently having issues with my rear airbag. The height control is inoperative and the bags will not fill completely and lift the rear.
I went under the car and found the bumpstops are a few centimeters off the rear axle.
What could cause the height control to not function? Could it be the height sensor, airbag, etc? I could hear the air compressor turn on so do not think that is an issue.
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I have a 2006 GX470. It has some sort of automatic rear suspension height adjustment. When it is malfunctioning the rear of the car is jacked up like I have pimped it out. I use the height adjustment button but when I resume driving the car moves back into the neutral position which is not neutral at all it is jacked to the top. I had the sensors replaced once for $1,000 but within a year it was doing the same thing.
Now the light flashes to lower the back end but the back end doesn't move. I am stuck in the jacked up mode.
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when to use this feature.
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I was driving today and noticed the ride was a harsh and bumpy. I stopped the car and try raising the car by pressing the up arrow on the height control switch, however, nothing happened.
The height control indicator is on "N" and it does not change when I press the height control switch either "UP" or "DOWN".
I found a few cases online where people stated that the "Height Control Button Off" button would flash. I have no flashing or warning lights in my dashboard.
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I was using the12V power outlet to power a small air compressor to a small air tank. Had to answer a phone and forgot about it for a while. When I returned, the air compressor was not working. I figured I either blew a fuse or fried the compressor. I pulled the 12v plug from the power outlet and inserted it in the cigarette liter outlet and the compressor still worked.
I then plugged my radar detector into the 12V outlet and it did not work.So I figureed I blew a fuse. I pulled the 15 amp fuse from #54 but it looked good. To double check I swapped this fuse with the 15 amp fuse for the rear wiper and the fuse was fine.
So I am thinking the 12V power outlet socket must be bad. Isn't that why we have fuses -to protect an expensive part with a cheap one? Is this an easy DIY job?
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Picked up this one owner 2003 with 120k miles, last week! I couldn't be happier with the build quality, and comfort. Its one solid truck! Its by far the nicest most luxurious vehicle my family has ever owned.
There is a flashing "off" light under the height control display on the dash. The height control says it is in neutral however the truck is currently sitting at 3ft from fender to road. I'm going through the owners manual and hopefully will find a way to get this corrected.
The truck will be taken to Lexus here in Dublin, OH on Saturday for a full inspection and fresh fluids.
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I took my 2003 GX470 for service (not a Lexus dealer), which included rear brake pads. After picking up my car, I realized there was a serious malfunction with the rear air suspension, and my "car height" was no longer working. I took it back to the mechanic immediately - he stated that the rear air bag deflated when they put it up on the lift (which is normal). However, they couldn't get it to inflate again, so had to order a new one. I'm wondering if this is the mechanic's problem or mine (the car has 101,000 miles on it).
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C1241 is low voltage warning and C1223 is an ABS control system malfunction.
Are or could these be related? Where should I start to troubleshoot the issue?
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I have my 2004 gx470 in for service today. I have noticed that the air compressor seems to run longer and more frequent . I bought the trunk July of 2013. I have lexus plat extended warranty. Prior to this service in august of 2013 I was experiencing similar issues and when the truck was in then they replaced the rear air height control reservoir assembly . Now they are changing the rear drivers side airbag . My question is should air bags be replaced as a pair. Will I notice any ride difference since they are only replacing the one that is leaking . I would figure common sense would apply and that the air bag works or is does not.
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My rear air suspension keeps dropping. Sometimes my suspension goes down all the way when parked, but not all the time. When I start the car it goes back up. It's a 2003 GX470.
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My GX and I are in the south and I sometimes have to leave it parked outside all day in 100F+ temperatures during the summer. Needless to say it gets extremely hot inside and sometimes takes a while to cool down. I started using my rear AC on full in conjunction with my main AC to facilitate cooling off the interior of the vehicle. I do this even when I'm by myself because... if I'm not mistaken... the rear AC uses a completely separate unit including a separate compressor. So it seems that it would cool things down faster running both systems. Can verify that the rear unit is completely independent of the main AC system?
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I have a leak in one rear shock and the pads need replacing. Local NTW says they are certified mechanics and work on GX's. Dealer is so darn expensive I'm trying to find an alternative. I'm looking to see if others feel good with going outside the dealer when they can not do it themselves. 2004 GX470 ...
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Rear heating system in my Lexus GX470 only blows cold air, what could be the problem. Front heater works fine.
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I've had the stiff ride issue with my 2005 gx470. Took it to three lexus dealers and finally the vehicle is fixed. Hats off to Lexus of Maplewood, St Paul, MN. Their shop foreman persisted and found after several days troubleshooting; a speed sensor was the culprit. My ride is much smoother over speed bumps without the need to cycle through the height adjustment.
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How to fix rear air suspension from dropping down to bump stops ...if I reset it every night it is fine but if not it will be down on bump stops by morning.
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I am having a problem with my rear suspension. The indicator lights on the dash (for the rear suspension control) are working correctly as are the controls on the center console, however the rear of my vehicle is stuck in a high position.
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My left rear suspension will leak down to bump stops unless I turn off auto suspension leveler. I can set suspension at high level turn off and it will stay that way i had set that way for 2 weeks and no leak but if I turn on leveler it may stay or it may leak down usually just left side somebody had said that my air bags were leaking so I tested it out all last month and find it hard to believe the bags are leaking if it will stay inflated a week or 2.
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Over the last few weeks I've been hearing what sounds like a failing pump of some sort when shutting off my '06 GX470. The sound lingers for just a moment after the ignition is cut off, and sounds like a loud, very fast tatatatatatatata. It doesn't always do this - sometimes I don't hear anything. I've been commuting in the GX for four years and I've only been hearing this intermittent occurrence over the last 3-5 weeks.
What this might be? Fuel pump? Air leveling suspension pump?
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Is there a way to re-program the tailgate/rear door height? Or even manually adjust? Just purchased a 2012 RX 350, and my garage is about 4 inches too short. Now I realize I can disable the electronic lift, but it's a shame not to be able to use this feature. I'm sure others have had this problem, but I've googled with no success.
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