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AFS OFF Light flashing

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Old 01-30-08, 03:02 AM   #1
scottmcc
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Default AFS OFF Light flashing

Hello all

I am on a business trip hundreds of miles away from my home and MANUALS.. It has been raining alot while I have been traveling and now my AFS OFF light is flashing. Continues to flash for many minutes and then quits.. My headlights seem to be lower (top cutoff line) than normal.. Do the manuals say anything about the Flashing AFS OFF indicator. Is this a auto height leveling problem? I thought maybe that my lights were dirty from the excessive rain so I cleaned them and now it seems like the AFS OFF light does not flash as long but I am not sure.. Just hoping maybe.. Still the lights are adjusted low..

PS.. AFS OFF light continues to flash even if I turn on the AFS OFF switch.. Once the flashing stops and I press the switch the light will come on normally..

Thanks
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Old 01-30-08, 02:03 PM   #2
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The AFS indicator will flash for several reasons, including if the sensors are unplugged, or having issues.

Could be your AFS sensors are misaligned, or not operating in good order. Can you count the flashes? or is it constant?

Like i said, i had this problem when i disconnected one of the AFS sensors while i was adjusting my air suspension.


My recommendation: If your going to be doing night time driving, and the lights are aimed too low, i'd drop by a Lexus dealer in your area, and have them look at it.
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Old 02-05-08, 11:07 AM   #3
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Default AFS Flashing resolved

Finally made it home...Turns out the right rear height control subassy burned up. causing the AFS OFF light to flash.. All charred on the inside.. Looks just like a potentiometer with an O ring around it.. Part is around $300...not under warranty..
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Old 02-15-08, 04:02 PM   #4
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Hi,
Just replaced by 1994 ls400 with a 2005 ls430, 35K miles.
I have the same flashing AFS light problem. You said yours
was not under warranty.....is that because it is not included
in the basic original warranty coverage or because you are beyond
the basic limit on time or mileage?

(background....had the car for just one week and had to go from NJ to MA
for the weekend.....halfway there, this AFS starts flashing and I have no
clue what AFS means yet.......fortunately, it wasn't my engine about to
explode as I learned when I pulled over to read the owner's manual)
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Old 02-15-08, 11:26 PM   #5
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Quote:
Originally Posted by cat6man View Post
Hi,
Just replaced by 1994 ls400 with a 2005 ls430, 35K miles.
I have the same flashing AFS light problem. You said yours
was not under warranty.....is that because it is not included
in the basic original warranty coverage or because you are beyond
the basic limit on time or mileage?

(background....had the car for just one week and had to go from NJ to MA
for the weekend.....halfway there, this AFS starts flashing and I have no
clue what AFS means yet.......fortunately, it wasn't my engine about to
explode as I learned when I pulled over to read the owner's manual)
Most likely he is over the mileage limit, as warranty covers the AFS system.

Did the problem arise after you turned on your headlights? Maybe one of the sensors was knocked out some point in the trip.
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Old 02-16-08, 05:48 AM   #6
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Quote:
Originally Posted by GRAND_LS 4 View Post
Most likely he is over the mileage limit, as warranty covers the AFS system.

Did the problem arise after you turned on your headlights? Maybe one of the sensors was knocked out some point in the trip.
Thanks....great to hear it will be covered......I had the lights on for a while before the problem started.....Since then it is intermittent at startup, sometime not occurring for 5 or 10 minutes........If I'm not mistaken, it sometimes comes on when lights are off as well
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Old 02-16-08, 08:05 PM   #7
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I just recently acquired an LS430 too. The past few days the "AFS OFF" has also been flashing on and off from time to time. But when it does, it does it for hours.

Is there any plugs or self diagnosis I can do myself?
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Old 02-17-08, 11:36 AM   #8
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Quote:
Originally Posted by cat6man View Post
Thanks....great to hear it will be covered......I had the lights on for a while before the problem started.....Since then it is intermittent at startup, sometime not occurring for 5 or 10 minutes........If I'm not mistaken, it sometimes comes on when lights are off as well
confirmed today that it comes on and flashes sometimes even when lights are not turned on........time for a visit to my lexus dealer
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Old 02-18-08, 03:19 AM   #9
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I dunno, I resetted the ECU and it's now gone. So if it doesn't come up again I guess I won't take it to Lexus.
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Old 02-18-08, 07:56 AM   #10
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My main reason for getting this fixed was that fact that my lights were shinning considerably too low.. I probably could have lived with the AFS flashing light until I found a cheaper fix. The AFS light would always stop flashing eventually and sometimes it would not flash at all but the HID beams would always be low. I had assumed if I turned OFF the AFS system that the lights should not try to adjust and stay level.

After having it done and seeing how simple the part was to replace, I should have waited but It was more important to have night vision than save a few dollars.

My total repair cost was over $500 but that included an oil change too..

If it happens again, I probably won't replace the part by the dealer as I found there is an adjustment to manually align the HID beams higher..until I can fix it myself..

I have 66000 miles on the car that is why it was not covered under warranty. I have chosen not to spend $2700 on an extended warranty (3yr /30k )as I don't believe I will be needing it. I only drive about 10K a year and the warranty will expire by time before mileage. Yes I know its a crap shoot but I am meticulous on maintenance and care.. I am sure this sensor would not have burned up had I not been in the hellious driving conditions that I was in.. (freezing rain, snow and crap). The car should have stayed home and I should have taken the company vehicle. But I have only put 2k miles on the car and I have owned it for 6 months. I was going through withdrawl..
I will not make that mistake again.. That said, I figure I still have $2200 in the bank for any problems that may occur in the next 3 years.. With Proper care, maintenance and driving decisions I believe I will be O.K.
However I have heard of people getting thier extended warranty for considerably less which I may research..
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Old 02-21-08, 03:16 PM   #11
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Quote:
Originally Posted by mikevanle View Post
I dunno, I resetted the ECU and it's now gone. So if it doesn't come up again I guess I won't take it to Lexus.
1. the problem has disappeared for 3 days now
2. what is 'resetting the ECU'?

thanks
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Old 05-16-11, 12:09 AM   #12
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Default Had hids put in

I had replace the factory lights with 6000 k hid kits and the fog lights also and I have been drink in rain and not in rain my afs light starts to flash did putting those lights did that void my warranty
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Old 05-16-11, 12:37 AM   #13
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I've had this happen on my car a few times recently. Applying the microsoft fix (shutdown and restart) has fixed it each time so far. My headlight alignment doesn't seem to be any different to usual,and once reset,the system tracks as normal.

Might have to check the connections on the lights...


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Old 05-16-11, 12:37 AM
 
 
 
 
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400, afs, cost, fix, flashing, indicator, lexus, light, ls430, off, replace, rx, rx350, sensor, service, subassy

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