Bad flasher unit or turn signal switch
Under to dash over the steering column. There are two and the lower one in mine is the four way flashers.
If the signal light fuse is blown all the signal lights front and rear would not work. If you have one signal light out I would first suspect a bad bulb or bad connection.
Flasher relay is defective.
A fuse usually blows when there is a short. It's possible you have a short in the wiring someplace.
No they are 2 separate things.
The flasher relay in Toyota Wil is in the signal light.
That usually indicates that one or more of the bulbs have burned out. Turn on the left signal, get out of the vehicle and see which bulb is NOT turning on. Replace that bulb and the signal should work again. Also the flasher may not be working for one side.
The socket size for the trunk tail light on a 2001 Buick LeSabre is 7mm. Bulbs can be purchased at most local automotive repair stores.
The flasher is part of the hazard light switch.
the signal flasher is the hazard light switch......remove the radio bezel and change the switch