Hi every one this is my first post .

I have upgrade my lexus es350 2020 from single LED to triple OEM.

I bought the Headlight and the headlight module used .
And it was plug and play little pet of programming but not that crazy.

Every thing works great and look amazing but , there was problem. From time to time I get messages in the dashboard there's a problem in the headlight but when I checked every thing works great even with the message .

I turn off the car then turn on the messages gone.

I checked using the GTS+ I got two error B2492 and B2493.

and i don’t know if the problem from the headlight or from the module .

 

1. Do they make that self leveling check when you turn on the car?
2. Do they swiwel left/right when cornering?
3. What kind of programing you did? What equipment was used?

 

1- Yes every time works
2- yes it does work left/Right corner.
3 - I used Techstream to sync and to program the leveling.

 

B2492 and B2493 are error codes associated with Lexus's Adaptive High Beam System (AHS). Where did you get your triple beam headlight assemblies and headlight ECUs?

Until just recently, US regulations did not allow AHS to be used in US sold vehicles. If your triple beam headlight upgrade hardware was from a US intended/sourced ES source then the triple beam headlight system you've upgraded to does not support AHS. The "AHS Operation Condition - Failure" and B2492 and B2493 DTC errors indicate you don't have the hardware support for AHS.

Is there a way to set up/program the Headlight ECU that the connected headlight assembly does NOT support AHS?

P.S. While searching on the "error B2492 and B2493" string, I found this (insecure http) ADAPTIVE HIGH BEAM SYSTEM, Diagnostic DTC:B2492, B2493 which appears to be an excerpt of a repair manual's trouble shooting procedures for those error codes. If you don't want to visit an insecure webpage, here's the DESCRIPTION section on those error codes:

 

I have checked the AHS it works before the message after the message it disable .

maybe because the headlight module has problem?

 

Did you ever resolve this? Have same issue.