Brake Failure!!!!

Damn read this whole thread and immediately went and checked my overland equipped bracket while at work. Thankfully it’s not close to that brake wiring cluster, I remember the instructions being cautious about the bracket touching it. That being said….I will be reinforcing the wiring harness and putting something in the edge of the bracket tonight just in case. I wonder if the off road and sport have different configurations for the location of the brake wiring.


Sucks to hear about your truck man hopefully repairs don’t take long.

 

Emergency use does not empy equal effectiveness. While yes it is called a parking brake, they are useful as a backup to actuate brakes if the primary system fails. Ie in an emergency. Also various manufactures have called them emergency brakes in the past. It's a change in name, not a change in use.

The last few rental transportation appliances I've used had electric parking brake. Activating them while driving caused them to actuate the brakes just like a brake handle.

 

Technically, Toyota (and others) call it a parking brake because hundreds of lawyers advised them to stop calling it an emergency brake. It functions exactly the same now as it did 30 years ago when every car had EMERGENCY engraved on the handle of the brake.

Sure it isn't ideal, but it is monumentally better than no brakes in an emergency, errr ummm I mean accelerated parking.

 

Well, I would still use it in a fucking emergency!

 

Liar.

it would be nice if you edited original post to update wtf actually happened.

 

Years ago I had a super steep driveway, backed out of my garage and the brake pedal instantly went to the floor, thank God l was able to grab the handbrake.

 

You just described how a typical hydraulic braking system works; engine stalls you have one or maybe two good pumps of the brakes until you loose all assist and are down to just how much pressure your leg can apply.

On the electric-assist braking system the OR’s have, as someone else mentioned as long as your ignition is on and the battery has a charge, you’ll have assisted brakes. To me, that seems like the better of the two systems, although this newer system does create some complexity which the older systems didn’t have.

 

Ok. Next time I’m careening towards a cliff I will not pull the hand brake because it is a parking brake, not an emergency brake.

Tell my wife I loved her and make sure my dog gets my inheritance.

 

They do. Sports don't have the same electric boost as the ORs/Pros. You could still cut some wiring that may cause problems but it shouldn't result in a lack of brake pressure since you have a traditional vacuum boost.

 

they may not have pulled the trigger, but they aimed the weapon. One wire and the brake system fails? Yea, they're not completely forgiven.

 

https://overlandequipped.com/blogs/news/tacoma-power-bracket-installation-instructions

Has anyone pointed out that the instructions for the bracket really emphasize how important it is to make sure it's not resting on the wires? Even to the point of making a bold note in red at the top to pay special attention to that step. It kinda jumps out at you.

EDIT: yes I'm running one in my TRD OR.

 

Pretty sure that's an updated instruction set, after they almost killed a few people and they complained.

 

Toyota clearly avoids any liability based on the fact that the vehicle was operating perfectly as designed. They are not and can not be held liable for system failures caused by unsound modifications.

The vendor is responsible, although you carry a portion of the liability when you determined you were skilled enough to modify the truck.

The single wire would have never failed if it wasn't damaged by the installation of a poorly designed aftermarket worthless piece of shit. Compounded by the fact the idiot selling it is aware of the potential for disaster due to previous customer reports.

 

There are a significant number of items on your truck, safety and otherwise, that will stop working if a single wire is cut.

But again, to be clear, your brakes will still work without the booster. They are mechanically actuated. Push the pedal harder and you’ll stop. It can and would cause accidents I’m sure, but it’s the same thing that would happen in a conventional booster if it leaks.

When things break, they stop working. Cut hose, leaking booster, cut wire, you name it. There are redundancies of course, but they don’t always function in the same way as the primary system.

Just for your knowledge though, if your power steering stops working, you will need to try harder to steer. If your brake booster stops working, you’re going to need to push the pedal harder to stop. If one of your brake lines leaks, you’re going to need to push the brake pedal further to stop, and so on.

This is not a Toyota issue. There are plenty of things that are, but this isn’t.

EDIT: I just looked at the instructions. That’s a terrible design. Nobody should install that bracket on a truck with hydraulic booster. Even if you install it properly, that’s risky business.

Jeff

 

Guess it wasn’t the master cylinder seal issue, but if it does fail:
https://static.nhtsa.gov/odi/rcl/2018/RCAK-18V888-9069.pdf

 

he was asking, or I read it this way, about the suspension and braking system... in which case everything is factory.
I have wheels and tires, ditch lights and a light bar, and a radio for comms.

 

Get outta here with your ironclad logic! That kind of factual talk has no place on TW!

 

Clearance the bracket (or remove it) and replace the wiring harness, then protect it with conduit and something to keep it from chafing.

lol, give me a break. Whoever installed that bracket is 100% at fault. Toyota uses a single wire from the battery that if damaged will cause the same failure and about 10,000 others. Are you saying that they should have redundant power supply wires via different routing with circuit isolation to prevent backfeed and shorting? Also, the brake system didn't fail. It still works, it's just without boost. The same failure can happen with the vac boosted system if a vac line comes off or fails for other reasons (like a sharp bracket cutting into a vac line). BTW, it's right in the installation instructions to pay special attention to avoid the brake system wiring when installing.

 

The bracket does have a huge part of the blame, but not 100%. I'm saying an electronic braking system is absolutely fucking retarded. Yes, the brake system did fail. It doesn't stop the vehicle in any semblance of a safe distance. There are plenty of reasons a car can lose all electrical power, it happens all the time. I'm just lucky I was on an empty dirt trail and not in traffic. When I bought the OE bracket at OverLand Expo a couple years back all I got was the bracket. It SHOULD have been installed different, but a single wire fail on a system as important as a brake system is fucking ridiculous.