Brake Failure!!!!

???

It's hydraulic from the master cylinder to the caliper/wheel cylinder. There are no electronics involved in the hydraulic system.

It's not entirely electronic. That is 100% false. The booster is electronic (I think) and the systems like ABS, collision avoidance, etc are electronically controlled. None of this is uncommon.

 

take it to dealer and see if they give you 1x courtesy repair. covid and all. call toyota customer service.

 

I've blown brake lines and such in other old vehicles. Unless you don't take care of your vehicle and check old lines and cables or you piss somebody off and they cut your lines... they usually don't just fail.

 

The electronics are for the antilock you still should have breaking.

















the system is fail safe

 

That is my thinking. I have no issues with electronic assistance. Make that shit easier all day long! My issue is when a queertron goes crazy and now I'm driving with no braking power; that is absolutely completely unsat.

 

Don't take this personal.... but apparently it's not. lol.

 

I would start checking fuses related to brakes and abs.

 

Thanks for the thoughts, debates and replys everyone!

I'm done in the garage for the day and a glass or two deep into some good bourbon. I'll look at getting a tow to a dealer tomorrow.

 

The brake booster which is what gives you the actual braking power is electronic. Yes the hydraulics and physical brakes aren't electronic, I thought that was a given and didn't need explanation. Without the electronic brake booster your brakes are nearly useless.

 

I'll go through again but 99.9% we checked them all, and all looked good.

 

(Not arguing with you) but I should still be able to stop the vehicle with zero electrical power at all.

 

I suspect there is more to the failure than just one simple thing going wrong like a fuse, but I couldn't say much about troubleshooting without some info and schematics about the system. I would at least talk to the dealer, especially if you have reasonable miles on the truck for the age. It's not uncommon for them to help you out.

 

The brake system on all Tacomas is hydraulic and has various fail safes just like brake systems have had for 40 years.

There are electronic controls and additional fail safes for them on some models, but in every Tacoma, the brakes will work with no power. You could disconnect the battery and the brakes will still work.

What is different between some models is whether it has a conventional vacuum booster or an electronically-controlled hydraulic booster.

Without a functioning brake booster, the brakes will still operate, but will require significantly more pedal force for the same stopping force.

It does sound like your brake booster is malfunctioning from what you have described.

Jeff

 

You can. thats what the e-brake is for. I suspect that the difficulty to get the vehicle to stop with the brake pedal is because of the absence of booster assistance. Like trying to stop any car with power brakes when the engine stalls or a vac line pops off the booster.

 

What are using to read codes?
Try checking the following?
Stop light switch
STOP fuse
STOP LO CTRL relay

 

That’s why you never skip leg day

 

thanks. I'll triple check all my sensors. The brake pedal doesn't feel soft, but then, doesn't feel really stiff either. One of those, I never had an issue with brakes before this (34,000 miles with quiet a bit of those offroad) so I can't remember what it felt like for sure. lol

 

It is but at that point you are relying on just the physical compression of the brake fluid through the hydraulic advantage to provide clamping force with the electronic booster providing the real force. You can feel it work when you start your truck. With your foot pressing the brake at startup you can feel the pedal push back as the electronic system gets power and builds pressure.

 

truuuuuuuuueeeeeeeee

 

hmmm.... didn't think to check that.

Just did, as it starts up there is no movement of the brake pedal...