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You can't install LED headlights on a vehicle that didn't have them as OEM installed. The headlights on all modern cars are monitored by the BCM and collect information via the Can-Bus computer network. The LED control board in the lamp puts data into the network the computer doesn't understand. That causes strange things to happen like confusing AFS which is also computer operated from the same computer.
Put the old bulbs back.
'year make model' in all questions please, first 3 words.
This is a friction detection issue. One asks when is a friction issue not a friction issue....on Pontiac's it's tied into the transmission and all motor mounts. things that give fairly false signals is a motor mount that supports the transmission. If it's "clunking" or letting parts move it just may be your bad guy. If Im totally in left field with your model/make look into different inputs into the AFS circuitry. Because obviously your not on ice and snow the entire time this indicator is on. Designed to let the operator know that the friction co-efficient is mis-matched and you may be hydroplaning and not be aware of it.
Switch labelled 'AFS OFF' is down near the fuel door release.'AFS' means Adaptive Front lighting System (at night with the Bi-Xenon headlights) it swivels either side, pressing that button means they stay pointing straight ahead and don't turn when you turn the steering wheel. You need to push the button again to turn the AFS back on.
Adaptive Front lighting System (AFS) is used when for example if it was
day time and you entered a dark parking garage the lights would detect
and adapt to the lighting environment which will then automatically
trigger the Bi-xenon headlights to turn on themselves in order to
illuminate the road ahead when the vehicle anticipates it is necessary.
It is an automatic feature which turns on by itself for your convenience
therefore you wont have to induce any actions, the car does it all for
you. And most Importantly (I quote) "the Adaptive Front lighting System
(AFS) automatically controls the headlight lighting pattern according to
steering angle and vehicle speed to help provide better visibility at
night."
This is a possible sensor malfunction - related to Suspension Height circuit.
Whenever a warning light of this nature is displayed, your vehicle's onboard diagnostic OBDII will have store the appropriate Trouble Codes.
Your local Lexus Dealership will be able to connect their handheld scanner to your vehicle's computer, which will then tell them where the problem lies (this would take less than 30mins to diagnose - marvellous machines they are!)
Lexus will then direct you on the appropriate action.
Cheers,
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replacing the headlights is easy. There is no need to adjust the afs, is is automatically done within the vehicle. Changing the bulbs doesn't affect the afs system at all.
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