99 LX470 AHC OFF Light Blinking When Driving
#1
Driver School Candidate
Thread Starter
99 LX470 AHC OFF Light Blinking When Driving
Hello,
I have a 99 LX470. I just got it for $7000. It has 140K miles. I noticed the AHC Off light blinks as soon as I start driving. There is solid green light at N all the time. I also noticed that the AHC H, N, L control button does not work. When I press High, the light would blink a few second at H, then the solid light remains at N. Same goes when I press Low button. I was wondering if this is a safety issue on the suspension that I must bring to Lexus dealer to fix ? How much would it likely to cost for diagnosis and fix? If anyone had similar issue , it would be great if you could share your experience.
Regards
Felix
I have a 99 LX470. I just got it for $7000. It has 140K miles. I noticed the AHC Off light blinks as soon as I start driving. There is solid green light at N all the time. I also noticed that the AHC H, N, L control button does not work. When I press High, the light would blink a few second at H, then the solid light remains at N. Same goes when I press Low button. I was wondering if this is a safety issue on the suspension that I must bring to Lexus dealer to fix ? How much would it likely to cost for diagnosis and fix? If anyone had similar issue , it would be great if you could share your experience.
Regards
Felix
#2
Pole Position
I have a 99 LX470. I just got it for $7000. It has 140K miles. I noticed the AHC Off light blinks as soon as I start driving. There is solid green light at N all the time. I also noticed that the AHC H, N, L control button does not work. When I press High, the light would blink a few second at H, then the solid light remains at N. Same goes when I press Low button. I was wondering if this is a safety issue on the suspension that I must bring to Lexus dealer to fix ? How much would it likely to cost for diagnosis and fix? If anyone had similar issue , it would be great if you could share your experience.
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ffl3883 (04-26-17)
#3
I have a 03 LX470 & had the same problem. I flushed my system out myself and it still flashed. Stay luminated & level off. Once I pull off it starts flashing. I found my problem & fixed it. The truck has 3 height sensors, 2 in the front and 1 in the rear. Well long story short, I had a wire on the driverside break completely off at the connector. Just went to the salvage yard and took a wire off another wreck Toyota. Splice & reconnect. Problem solved
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ffl3883 (04-26-17)
#4
Driver School Candidate
Thread Starter
Did you check the fluid level? If so, did it look clear and relatively clean, or more like coffee that's sat all day at a truck stop? First thing would do is change the fluid and see what happens. Your control button sounds like it's working fine. I doubt it's a safety issue, as AHC will force the truck to raise at a relatively low forward speed. A Lexus dealer is not necessary, some 100 series Land Cruisers had ahc so you could see a Toyota dealer. Personally, I find more expertise and talent at a good indy shop, if you have one near you.
#5
Driver School Candidate
Thread Starter
I have a 03 LX470 & had the same problem. I flushed my system out myself and it still flashed. Stay luminated & level off. Once I pull off it starts flashing. I found my problem & fixed it. The truck has 3 height sensors, 2 in the front and 1 in the rear. Well long story short, I had a wire on the driverside break completely off at the connector. Just went to the salvage yard and took a wire off another wreck Toyota. Splice & reconnect. Problem solved
#8
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ffl3883 (05-08-17)
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ffl3883 (05-15-17)
#14
Driver School Candidate
Thread Starter
Thank you for your reply. Tonight, I went over a small bump on the through-way. The off light stopped blinking and I got solid green light on N. I felt ride become much more stiffer. After I parked the truck, I tried using the height control. When I pressed H, the light at H blinked constantly while light at N remained solid. There was no movement on height. When I pressed L, the light on L blinked constantly , while light at N remains solid. I got movement this time, however only the front moved. My truck was low in the front and high at the back. The height went back to normal position after I restarted the truck. Any thoughts or guidance are appreciated.
Regard
Fliu
Regard
Fliu
#15
Pole Position
Thank you for your reply. Tonight, I went over a small bump on the through-way. The off light stopped blinking and I got solid green light on N. I felt ride become much more stiffer. After I parked the truck, I tried using the height control. When I pressed H, the light at H blinked constantly while light at N remained solid. There was no movement on height. When I pressed L, the light on L blinked constantly , while light at N remains solid. I got movement this time, however only the front moved. My truck was low in the front and high at the back. The height went back to normal position after I restarted the truck. Any thoughts or guidance are appreciated.
Regard
Fliu
Regard
Fliu
Steve
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