Hello every one, I have a lexus nx300 2019 f sport, my right drl is not working right. when I turn right signal on, my drl is off and never on again, which left side is fine. Is anyone know the problem could be? . At first, I thought it has some problem with the drl, then i change another one but it is still the same. At night, both sides are working fine.

 

Operation of the DRL lights is controlled by the headlight ECU(s)*, which are mounted to the bottom of each headlight assembly. To turn on the right-side DRL, the body computer sends a command to the left headlight ECU, which in turn forwards that command to the right headlight ECU.

A dealer can scan the headlight ECUs for error/fault codes.

*ECU = Electronic Control Unit