Pre-collision system question

I've had it happen a couple of times, both for good reasons. Once I hit the brakes very fast, but light, at freeway speed, due to someone trying to merge into me. Another time, I came up on a barrier coming off an exit ramp, because I couldn't move over to the feeder lane as fast as I thought. I did not have to come to a stop to have the belts unwind. Frankly, both I and my passengers (both times) thought it was kind of cool and reassuring. This does not happen willy nilly, and there's no harm done. It just cinches up the belts very quickly and smoothly. I've also had ACS brake a couple of times when cars cut in front of me too close. Again, very smooth and not really alarming. PCS and ACC are great!

 

Just remember, Toyota has the most conservative lawyers in the world, LOL! Half of that 600 page manual must be those nonsensical and overstated warnings about this and that...

 

I have had the pre crash system activate twice -- both times were within the first two weeks I had the car. Each time there was a valid reason for the system to work. I both cases the pre-tensioning later released without my further action.

I have not had the system react without reason, and I have no fear that it will do that.

 

Quite a bit now. I've not had any trouble with the system on such roads.

No, that hasn't happened again. Remember, it was only a visual warning and nothing further happened.

 

I think you'll be pretty pleased!

 

I had a false activation several days ago. I went and read the manual and found that two items listed occurred at the same time.

First, I was driving on a long sweeping curve to the right with 1 oncoming car on the left (but at least 150 feet away I would guess) and second, I was also driving over a series of those heavy iron plates they use in road construction to cover holes, etc.

I was going around 35-40 when a BRAKE message appeared and a beep was heard. I looked around and saw not imminent danger and saw the message lit for a few more seconds. Could not figure it out at the time....but I did slow down.

The system did not apply the brakes. Automatic braking is a nice feature, it is also supported with the Laser Speed Control feature. I like the Laser Speed Control. Once you trust it the braking on that system is very nice. Today a van pulled out in front of me while I was going 55 (speed limit) and it never accelerated fast. Car slowed down to 41 very smoothly but firmly and then paced the car in front of me. This is off topic a bit, but I think the braking associated with this feature is the same as the braking for the pre-collision system.

 

Managing DRCC

Another situation where you have to "manage" DRCC: You set your max speed to 60+ MPH in the DRCC but you're in the right hand (slow) lane of traffic moving at 40 (or less) mph getting ready to exit the highway. As you move into the exit lane intending to slow down (with no one in front of you) your car, seeing clear road ahead, will accellerate back to your max speed. You have to anticipate this by tapping the brake or turning off the cruise control.

The first time it happens will likely surprise you but you'll get used to it quickly and the correction will be automatic.

Stu

 

Re: Managing DRCC

Well "tap" is a bit subjective. It definitely takes more than a mere touch on the brake pedal. Do the friction brakes actually start to grab? I think I'd have to say that I'm aware that my foot was on the brake, so I'd have to agree with your observation that the brakes start to operate although it's really subtle.

Stu