The location of the brake light sensor on a lexus rx300 1999 yr the brake lights will not come on when brake is pressed i changed the bulbs the brake switch and fuses so the brake light sensor is the only thing left but dont kno where its located

check fuse and change bulbs if this dosn't work check brake light switch

have you ever change a bulb rear brake light rear on rx 330 outside light

Have you checked the switch on the brake pedal?
Need to find out if computer is part of brake light circuit if everything else is working.

does the third brake light work? If so change bulbs on lower lights by removing cover then taking out bulb. It twists out. Simple.

check the brake pedal switch by connecting a test light to it and ground.

When the pedal depresses you might hear a click or see the button depress.

The test light should light or not light changing as you press and release the pedal.

Another way to do this is to change the brake pedal switch and see if it works.

I hope this helps.

If you are referring to the rear brake lights and not the red brake warning light, then i suspect either a faulty brake switch(usually located above the brake pedal) or one that is not adjusted properly.

check you tail bulbs as you have a broken circuit

first of all the brake lights are always in the rear only!!. take the light bulb out and while some one is appling the brake pedal check to see if yo have power at only one terminal of the socket, then release the brake pedal and make sure yu dont have power at the same terminal , now if you had poer in one of the terminal then you have to replace the socket for the brake light bulbs.

look under the dash board right at the brake pedal switc where the brake light switch is located and make sure that the wires are not broken, you can also do a quick check by just disconnecting the brake light seitch and then jump the terminal off of the brake switch and you should have light if the light works this way then you have to replace the brake light seitch

If it's the same as the 1995 lexus, you go through the trunk.

Unscrew the bolts that are holding the brake lights in place through the holes in the apolstry in the trunk. The light should come loose and from there find which wire goes to the bulb that's out. Unscrew the piece, pull the bulb out, and replace.