Thanks for that. However, I am not sure if my car has HID lights. I checked the electrical specification in my manual, but it is not clear whether they are HID or not (given that it is an RX 450H Advance, my guess would be that they are HID. In which case, if they are HID, do I need to disable the I-AFS setting? I will try adjusting the setting tonight and see whether it makes any difference.
On another note (excuse me for going on about my problems, but I have not had the car long and I am still on a learning curve), my car has two settings ECO mode and sport mode. At the moment, the ECO mode is turned off. Does anyone know what this is supposed to do. My guess would be that it achieves greater economy at the expense of performance and conversely, the Sport mode achieves greater performance at the expense of economy.