The brakes failed while traveling 72 miles per hour on cruise control, and controlled distance. I was traveling behind a semi truck in the third lane from the right on Interstate 5 near Stockton, calif. coming upon the truck the Tundra started to accelerate, I hit the brakes numerous times yet tundra continued to accelerate, so i hit cancel on speed control, thru into park, and navigated three lanes left in heavy traffic into the median, still hitting my breaks, Finally stopped the Tundra with emergency break, but took the right rear tire off the rim in my violent exit to the median, Inspection has been complete from Toyota mfg. saying i have a normal truck, Dealer can not confirm problem, there were no warning signs. I am a very experience large animal veterinarian driving over 3 million miles in my career with no accidents, or moving violations. I own a 2007 Tundra with 200,000 miles, no incidents, I know where the brakes are on a tundra.

- Santa Cruz, CA, USA

The Trailer Brake Controller is set to automatically be off until you setup a trailer. So yes, the problem is very repeatable, it's the default setting in the Tundra. I traveled a Rocky Mountain mountain pass towing a 6,500# trailer and had extreme brake fade because unknownst to me the Trailer Brake Controller was off because I didn't setup a trailer in the dash. I manually controlled the gears and kept in 2nd gear down the entire grade. My driving history is towing trailers with a old Ford Ranger ('95?) and 2014 Ford Expedition. The Ford has brake controls and I would use it to tow 3,000#. I don't remember if the Ford Ranger had a brake controller. So my experience is limited. I bought a brand new 22 Toyota Tundra and read the manual for pulling a travel trailer (TT). I upgraded my travel trailer from 3,000# to 6,500# GVWR. It was essentially my first towing trip with both vehicles. I plugged in the TT. Dashboard said "Trailer Detected". I turned the dial in the middle to "Tow Mode". Those signals said to me everything is good. My mistake: When I adjusted the gain manually in the dash it said "Trailer Brake Controller Off". In my mind, I interpreted that as the manual controller was off. Not sure why. I should have stopped there. But dash kept saying "Trailer Detected" so I kept driving. Long story short, after driving the pass and nearly losing the brakes I stopped what I was doing and spent 30 minutes playing in the dash and reading the manual more. I setup the trailer I was driving in the dashboard. No where in the manual does it say "trailer brake controller off until you setup trailer in dash." When I set it up in the dash, I realized that the brake controller defualt was off, even if it says "trailer detected". I could tell because the manual brake controller started working.

- Wilson, WY, USA

Automatic braking engaged with no vehicle or objects in front. I was starting to move after sitting at a red light, at approximately 20 MPH the vehicle engaged the automatic emergency brakes bringing the vehicle to a stop in traffic. I had to depress the brake pedal hard in order to deactivate the automatic braking system.

- Rio Rancho, NM, USA