Since today, every time I brake firmly there is a single 'click' that comes from the drivers side wheels..

It doesn't click if I do a slow or gentle brake, only when it's a bit more firm.. I've tried in both forward and reverse and it does it..

Would anyone know what It could be?

Brake pads moving or ball joint?

Thanks

When did this started happening, what did change?

I went on a 500km road trip 2 days ago, but no noises during then..

Only started today in the morning when I got in the car, (now its midnight)
I jacked up the car and wiggled the wheel around to see if its the ball joint but there was no noises from moving it around..

I couldn't take the wheel off because my tire iron has gone missing, but after just wiggling the wheel around and driving around, now I notice it only happens about 1/5 times I brake and when it does its quiter than before..

Maybe its just dust, because the car is very dirty

i'd check your caliper bolts...

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I agree you should make the sure the Guide bolts are in good shaped/properly lubed, but on a side note if your using Semi-metallic pads they tend to be noisier than other materials, I used to run them and every so often I'd get this tiny creak/ping when I started braking.

I have a similar problem at both sides and afer I checked it a lot I found that the inner break pads move inside the caliper.
I don't know if there is something missing from my brakes but it does it on both sides. I 've been thinking to replace the springs
insight the caliper but do you thing this will be enough?
And in case someone alse have similar problem if you ffell under the rear end and try to move the pads with your hand, you will
replicate this sound without much effort.

Does it happen on acceleration as well as braking?
I had this caused by worn out LCA bushings and it was a pain in the ass to find. Something you could easily rule out.

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No man just under braking.
I can feel the pads moving by pushing it with my handm there is a lot of play in my calipers, forcing them to move I can replicate
the exact sound.

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Mabey your wire springs came out they hold the pads from moving and rattling.

There is a Toyota tech bulletin for a single click in the brakes, it's caused by the loose fitting pads. When you back up and brake, they shift back and the next time you brake going forward, they click against the mount. Toyota's fix was add brake grease to the pad mounts to lessen the noise.

I'm wondering if some brass shim stock to get a better fit may be do-able?

http://www.celicahobby.com/tech/tsb2/TSB_clicking_noise.pdf

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Its the pads moving, try different pads, or you could also try 7th gen calipers and pads as i haven't heard of the problem with those.

Edit: My bad didn't read the last reply lol

This post has been edited by Noahwhite2014: Dec 10, 2014 - 8:45 AM