My hazards and turn signal lights do not work. I own a 91 lexus ls400! So far I've replaced the flasher relay under the dash. But they still don't work. Help please!

Your hazard lights and turn signal lights are different. Each has it's own unit. Not sure about yours but mine is found under the dash not far from the steering column.

The flasher units are different for turn signals and four way flashers. Not sure but most are under the dash not far from the steering column

IT IS LOCATED AT--BEHIND LEFT SIDE OF DASH IN RELAY BOX. (TURN SIGNAL AND HAZART FLASHER UNIT ) SAME FOR BOTH. PUT YOUR TURN SIGNAL ON AND TOUCH THE RELAYS IN THAT AREA YOUR ARE GOING TO FEEL WICH ONE IS WORKING, (DEFECTIVE FLASHER OR HAZARD SWITCH. )

About your 1992 Buick Park Avenue 3.8L SFI OHV 6cyl. the Flasher is located:
Hazard flasher: Front seating area, driver side, under dash, mounted above kick panel

Turn signal: Front seating area, driver side, under dash, driver side of steering column, mounted on support bracket

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Your vehicle has 2 flasher relays. One for the turn signals and one for the hazard lights. The turn signal flasher relay is located on the drivers side, under the dash, mounted on the drivers (Left) side of the steering column. The hazard flasher is mounted on top of the steering column. Do not get them mixed up.

There are 2 separate flasher relays. 1 for the turn signals and one for the hazards. I believe you have a bad flasher relay for the turn signals. The location of that is in the front seating area on the drivers side, under the dash on the drivers side of the steering column, mounted on support bracket. I provided a picture of what it should kind of look like although the picture I gave you is an aftermarket one so the color and such may be a little different but will look the same. Don't get it mixed up with the hazard relay which is located in the front seating area on the drivers side under the dash above the kick pane lmounted on top of the convenience. I am almost 100 percent sure the flasher and hazard relay are the same so if you want to just swap them out in order to have turn signals that should work. You won't have hazards however. I hope this helps you and good luck.

you don`t say but do the lights work either on the front/back on both sides.if not then it may be a fuse that needs replacing or need a bulb replacement.if the lights work but don`t flash then it sounds like a signal flasher problem.the flasher is located in the fuse panel under the dash on the drivers side.if the hazard flashers work then turn them on to find the hazard flasher by the fuse panel then you will know what the signal flasher looks like and change the signal flasher.make sure you change the one for the signals and not the hazard one.if the hazards work then i would say the signal switch is good as the hazards work through the same switch.

the hazard lights use a different flasher(relay)then the signal lights.you don`t say if the signals work on one side or not,you should check the fuses for the signal lights in the fuse panel under the dash on the drivers side.if you put the hazards on and find the flasher then you will know what the signal flasher will look like,it is on the fuse panel and replace they should work.

you need to check to see which bulbs don`t work both front and back lights for the signal on the side it`s not working,you don`t say if any signals work or not if no signals work then you need to check the fuses under the dash on the driver`s side.now if it`s just one side then check the lights as mentioned above.if one isn`t then replace the bulb.if neither bulb is working then it sounds like the signal flasher is not working.turn on the hazard flashers and check the lights front and back.if all bulbs work then leave the hazards on and look under the dash for the flasher that is making the noise,this will show what the signal flasher will look like,then find the signal flasher on the fuse panel under the dash it should be located on the fuse panel.and replace

the hazard switch above the radio is your problem. if you put on your signals and they don't flash turn hazards on then off and they will flash. (changing this *** will fix your problem