No clicking on mine.

It only clicks once when I accelerate for the first time after starting up. Doesn't make it the rest of the trip. Not even sure if its the same thing clicking.

The clicking when you first accelerate is different. My 2008 4Runner made that sound, as well as my 2015.

This click is one little click each time you depress the brake pedal. Sometimes I think I can even feel the click in my foot. But I may just be going crazy...

I know its different. No clicking when I push the brake at all.

Just a very noisy pedal but I can live with it.

My 4R is in for a few maintenance things before the warranty runs out, and this is one I asked about. It's at a dealer and with master techs who I trust, and both told me for certain this clicking is the pin in the brake pedal that activates the brake lights. Nothing to worry about.

It is strange though, that sometimes mine clicks and sometimes it doesn't. Oh well.

Odd. I have the same click at the pedal, as the video posted. It occurs so infrequently. I can also feel the click in my foot. If I cycle the ignition it goes away. How that is considered normal is beyond me. But glad to have found a solid response here. Thanks all.

The clicking noise is a switch.
It’s an input to the safety interlock system that prevents you from shifting out of Park unless you have your foot depressing the brake pedal.

My click happens when driving already. Anytime when I touch the brake pedal when slowing down and such. Again it goes away when I cycle he ignition though. If I am having it when I’m moving does that mean there is something wrong then, as it’s not to hold me in park?

The switch clicks on anytime you press the brake pedal past a certain point. And it clicks off when you release the pedal. This function works at all times. While driving, when idling at a light with brakes on, in neutral, in park, etc. It is simply a mechanical switch. But it supplies a signal to a system that prevents you from shifting out of Park unless that switch is in the “brake on” position. And if the ignition switch is in the On position. If probably retracts a locking pin that enables you to move the gear shift out of the Park position.

You can demonstrate this for yourself. Turn On the ignition. You don’t need to start the truck. Try to move the shifter out of Park. Can’t do it. Depress the brake pedal a little and if you’re in a garage you’ll see the brake lights go on. Try to move the shifter again. Can’t. Now depress the pedal a little further until you hear the click. Try the shifter. There you go.
Once you’re out of Park the system doesn’t care what the switch position is. The switch just keeps clicking away with no effect while you’re driving, in time with your brake foot.

Thanks again for the reply. I really appreciate it. I am confused now. My situation is different as what is in question is only when the 4R is running, I am driving, and on occasion I can hear and feel the brake pedal click. Again all this when the vehicle is moving. Usually the brake pedal (when driving) never clicks. Today was only the second time this has occurred where while driving it would click every time I touched the brake pedal. Once I turned the 4R off and restarted and drove the click was once again gone. It can’t be normal normal if the click does not exist normally and pops up and once it does it continues clicking during the duration of the drive until the 4R is turned off. Isnt that odd? Doesn’t that mean the click should always be happening every time I touch the brake pedal??

Mine clicks most of the time, but I don’t notice it unless my OCD is kicking into overdrive. Pretty obvious it’s a switch that’s doing its job. Intermittent audible clicking is probably related to input variables from your foot, etc.

If any T4R noise is bothering you, buy a current gen F-150 Ecoboost 2.7 V6 and drive it for a year. They start out smooth and quiet but quickly end up sounding like a one man band kicking a steel trash can full of crack riddled monkeys and ball bearings down the road.

I lasted 18 months of Ford ownership before going back to Toyota. After 30 years of OCD Honda and Toyota ownership where I noticed every rare, minor squeak or rattle, the Ford truck cured me of paying attention to minor sounds.

When the turbo needed replacement after 14,000 miles I knew It would be a short relationship.

Almost certainly the switch is clicking all the time when it is activated and you aren't noticing it all of the time

The switch must always be active at the pedal end, because the pedal doesn't know the position of the shift lever nor the status of the transmission; the switch clicks and sends a signal to the other end, but if you're not in Park there's nothing that happens because nothing is needed.

There are other functions of that brake pedal switch while you are driving.
One is to cancel cruise control when you hit the brakes.
Also, when coasting downhill and you hit the brakes a few times the transmission downshifts into a lower gear (grade logic).

Since I saw this thread, I have paid painful attention to it. I am sure that it is not clicking most of the time. I do not feel it nor hear it. Rarely it starts happening, and I can't figure out a common variable. I am not using cruise control (never do), I am not coasting downhill. So you gentlemen have the click happening 100% of the time when the truck is in Drive and actually moving?

When the clicking (both in feel and sound) there is no common variable. I can tap it, or brake hard and release and have it happen, or be smooth on the brake and it will continuously happen. When in Drive and actually moving, it rarely ever clicks.

I actually *don't* hear the click mentioned at the top of the thread. Or at least it's rare I hear it--either I've lost hearing in that range or I have the radio too loud most of the time. I do hear a clicking when VSC engages--a fast clicking related to braking--but that's easy enough to observe that it should be easily distinguishable from normal driving.

As @Toffees said, I do not hear or feel the click all the time either. While driving there’s too much road or wind noise or music to always hear it, even when really paying attention. And unless you’re driving on an ultra smooth road surface there’s always some road or tire vibration that masks your sense of feel through your shoes.

You may be overthinking and overly worried about this. Test out all the conditions I mentioned in previous posts to see if the switch is functioning under its intended conditions. If it doesn’t cancel cruise control that’s an indication the switch is bad. Take it to the dealer. If it works, then let it be.