Truck moved with feet on brakes

A new member from south PA. At a stop light with 5 people in the cab to witness it. Truck started to move and with both feet on brake, it bumped truck in front. I have imprint if his trailer hitch in the plastic cover. Has anyone dealt with something like this.
This is the first issue I've had with it 21kmiles.

 

How many miles on the vehicle?
Do you know the condition of the pads and rotors?
Have you checked the level of brake fluid in the master cylinder?
Did the brake pedal feel different from normal when this happened?
Did the pedal go all the way to the floor or maybe feel like the ABS was activated?

 

21k pads and rotors just inspected in June. Just finished 450 mile trip. Yes it went to floor abs felt like it might have been active. Used both feet but truck went forward anyway.

 

Thanks for link. Will try this when I get Tuesday.

 

Thanks

 

Check for leaks, especially around the hard lines at the caliper.

 

Sorry to hear about this, but welcome to the forum from LA (Lower Alabama)!

 

Thanks Danman. Bakershack love the people from LA.

 

Welcome from Norcal

Thought Toyota's updated software would prevent most of this due to engine power being cut when the brake was applied?? Atleast that's what the recall I received stated like a decade ago, for unintended acceleration... eitherway I'd check your calipers.. A cracked rotor mangled my caliper and when the brake was applied it kept going with the brake pedal to the floor

 

Thanks Blackdemon and toofun.

 

I didn't mention because Idk this was In a line at Fast food drive in. Under heavy AC use. Any thoughts?

 

Did u over heat your breaks

 

They are not warped, stopping normal right after.

 

I think u overheated ur break pad

 

When it cool back down, it stop normal again

 

Good point, lots of use stop n go

 

Yes no problem. No shake at all

 

Get some better brake pad with higher temperature

 

The calipers use to freeze in the 90s. I've had several toys that 90 truck did rt front once.

 

Possibly air in the master cylinder or even a speck of dirt in there. A good bleeding may help.

 

These r original pads with 21k, May be ill check them out.

 

Organic brake pad don’t take that much before brake fade, maybe metallic or ceramic pad

 

AC ain't got nothing to do with it... it's like saying you slipped because your fan was on... just a comparison.. I would agree with most if it's master cylinder issue if you don't find a leak elsewhere.. I'd look at all 4 corners or take it somewhere to be checked....

 

Thanks