sounds like your alternator starting tell you something... you can buy new alternator, get your old unit reconditioned or buy a second hand one
how do i turn off the headlights of my toyota 4 runner 2000 while the car is off?
There are a couple of different times when you'd turn off your headlights. You'd turn off your headlights when the car is off for example.
do the headlights come on automatically or manually, if manually turn off
When you're driving drunk.
You should flick the headlight switch after you turn the car on.
Alternator is not making enough power.
because you turn them on and off, on and off...
You cannot actually turn off the lights while the car is driving or in any gear but park. If you would want to turn the lights off while you are parked for some reason, put the car in park, turn off the car completely, pull the emergency brake up, then restart the car. This overrides the headlights and they will stay off while the car is running-however, as soon as you release the emergency brake- the headlights turn back on.
It is idling to low, it may be in need of a tune up.
Shut the car off...lol
When you turn on the headlights of any car it causes a load (or horsepower drag) on the engine. Your car has an idle problem and the load on the alternator simply exacerbates it.
buy a new car