Heavy rain today and slightly foggy. I keep my headlight control on "auto". In the auto possition the daytime running lights (DRL), are always on while the car is on. Toyota has decided that the DRL lights comply with the law requireing your lights be on when the wipers are in use, except for the one sweep function. This is fine, as the DRL are quite bright and easily seen in all condidions, making it unnecessary for the headlights to come on when using the wipers.BUT......this means when conditions are poor as I described above, you will find yourself driving without TAILLIGHTS. The stop lights will come on, as usual, if you touch the brake pedal, but during normal driving you will not have taillights, as you would with the headlights on. Today after I realized this, I moved the control to the "headlights on" possition which lit the taillights as normal. Toyota should do one of two things, Change the system to turn on the headlights when the wipers are activated except in the "one sweep" setting, or at least change the system to have the taillights come on when the wipers are activated. This is a safety problem and I thought I would pass on this information for those that may not be aware of this. By the way....I tried driving in the "DRL OFF" setting, and nothing happens in this mode. The headlights do not come on and it doesn't react to the wipers being on. I hope this is helpful.

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