6

Prestone does make product that is compatible with DOT3 and DOT4 fluid referred to as DOT3/4. Several sites state you can use 4 in place of 3. However using 3 in place 4 may decrease brake performance. Without knowing the year it is hard to tell which is the most correct type of fluid for your Toyota. Regardless of the type used, that is the lesser of your ...


6

On the Expedition the hazard, lower brake lights, and turn signals all route through the multi-function switch. Gain access to the multi-function switch connector and back probe the light green wire while pressing the brakes. Does it have power? If it yes back probe the light green/orange and orange/light blue wires while pressing the brakes. Does it have ...


4

needle nose pliers, roll a corner back and walk it out with the pliers


3

I think that your left and center brake filaments have blown. The left and right bulbs will have 2 filaments, one for the tail (side) light and one for the brake light. Only the brake filament will have blow in the left one, so allowing the tail light to continue to work. When this brake filament broke, the body control unit (BCU) recognized it and lit ...


3

If the "third" brake light is working the switch is okay. The bulbs have been changed, and I assume with the correct bulbs. Has there been any work done recently? Has a trailer hitch been installed? Often times the trailer people sever the wire going to the brake lights with a "scotch lock" which cuts the wire in two, although not immediately. Also you need ...


3

I would first try needlenose pliers. If that doesn't work, a potato pushed into it is an old trick. Might I also suggest that you pull out another bulb first to discover exactly what method is needed -- do you push it in first, does it turn right like you expect, or does it go left?


3

Look at the brake light switch, then look for the plastic stopper that the switch plunger contacts. If it is missing or broken the switch plunger does not get pushed in causing the lights stay on all the time. The most likely cause of this sort is failure of the brake switch stopper. An image of a typical broken stopper is seen here. broken brake stopper ...


2

Shorts in this system are almost always in the rear of the vehicle. Remove all the brake bulbs, including the center light and inspect the sockets. Carefully inspect anywhere the wires move, like at the trunk lid hinge. Next look for any added trailer wiring connectors, if any disconnect them. After each part is disconnected retest. A short finder tool saves ...


2

Having personally applied these to a few vehicles when I was younger, Steve's comment is accurate. In taillights with internal parabolic reflectors, the blue dots gave a very vivid magenta color to the taillight when viewed from directly behind. It's actually pretty neat. On vehicles with no reflector inside the taillight housing, the effect was much less ...


2

I had cars then and never remember anyone claiming blue dots were anything but "cool". I never had the money to spare for them , but I did worry some that some one might "borrow' the tail lights of my '49 Lincoln ( Cosmopolitan convertible) because they were the ideal shape for blue dots.


2

Just a thought. The most common form of color blindness is Red / Green. So, to a color blind person, red and green appear nearly the same. Adding the blue light would still be seen as a color by a person with red / green colorblindness.


2

Brake lights are wired to work independently for safety reasons. If none of the lights are working, the first thing to do is check all the bulbs are good. No reason to start chasing wires if the bulbs are bad. If all the bulbs are good, check fuses. If fuses are good, use a multi-meter to check for power at the light socket. If no power, then check the ...


2

Take a look at the wiring diagram below. The important clue is you said the middle brake light isn't working. The CHMSL (Center High Mounted Stop Light) works only from closing the dedicated relay. This signal provides power to the lamp, and also instructs the engine and transmission control modules that you are braking. Unfortunately, this function is ...


2

Since the high mount light works it's not the switch. If the tail lights work. Check in the wiring harness in the left rear quarter panel along the frame. More than likely a splice/wire is rotted or broken. If they don't work. There should be a ground point for the two stop/tail lamps either on the left frame or the bumper. If that's OK trace the wiring ...


1

The issue was the brake light fuse burned out. This was frustrating us because there is a separate fuse labeled TAIL for the tail lights and a different fuse labeled STOP for the brake lights. Without Google, we wouldn't have thought about looking for the STOP fuse. Once the fuse was replaced, the car would shift out of park. I guess we need to look into ...


1

After searching around I try to cut it open this weekend and the result was a complex circuit for my understanding. I'm post it here if someone is interested to see or explain how it works. So I ended up removing the whole circuit and creating a simple circuit with resistors and 2 diode the classic old way and hope that the LED want burn quickly.


1

Here is your brake light wiring diagram, might help you diagnose and answer some of your questions.


1

Did you check Fuse #8 in the dash fuse box? This is a different source of power than the turn/tail lamps. The diagram below should allow you to figure out where the problem lies. If Fuse #8 is okay, check for power at the new brake light switch with the brake depressed with a DVOM. One side always has power; the other side switches the power to the lamps ...


1

Not for Dr's, but cops put them on their personal vehicles so that other police wouldn't pull them over. Then, yes, the hotrod crowd figured it out and it became illegal in most states. Generally you can get away with it unless you're an ass to the cop and he starts hunting for violations. I had blue lights on the side of my motorcycle and beat a ticket ...


1

Human perception: A red light seems farther away than it is. A blue light seems closer than it really is. It seems obvious to combine the two to give a better idea where the light actually is. Of course, that doesn't mean Emergency vehicles use red and blue for that reason, nor that blue dots were invented to get those idiots from yesterday-year to start ...


1

Blue dots I've read were meant for doctors so the cops knew not to pull them over for speeding and once the hotrodders found out they started putting them on their rides so cops wouldn't give chase at night... sounds legit


1

Time for old wooden broom handle trick. Find old broom with screw in wooden handle. Unscrew handle from broom base. Shove the handle into old socket. Unscrew the old bulb base. I've done this many times.


1

I could not find any documentation for this, but did find a video. The video shows the assembly having press clips that need to be pushed out. Unsure what language this is, but the watching should help you. Seems simple enough. https://youtu.be/hAhSiLdGf7E


1

If it is just the brake lights that are not working, the the following could be faulty - Brake switch on the brake pedal - check that it is being actuated by the pedal properly. You cold also bypass the the switch by connecting the two terminals together and see if the lights then work. Fuse could be blow - find the fuse and check its condition. The ...


1

I've seen this implemented in two ways, Citron have a system which engages the hazard warning flashers under heavy braking. I've also seen a BMW which illuminated it's rear fog lights under extreme braking; thus the brake lights became even stronger. Surely you'd set this at or almost at the maximum braking force the car could generate; i.e. if the maximum ...


1

If there's a black cover that you can see the speaker through, then I am assuming that you have the LED array for your lights. You'll have to go in through the back seat of the car and remove the plastic cover that sits partially behind the back seat and underneath the rear window. Inside of this cover are speakers and your high mount light assembly. The ...


1

I recently stumbled upon this video which shows that such a problem can be due to a low brake fluid level. I went to check that, and it was low, although right above the “Min” level line. I still went ahead and added more fluid. Lo and behold, it worked, at least so far. What is surprising to me is that the brake level is low rather than high, even ...


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