Why does brake keep appearing on the dashboard

[Giraffe76]

Hi all,

We have a toyota yaris hybrid.

At total random times i get brake appear on the centre of my dashboard display accompanied with a beep.

I have taken the car to my local dealer who says they couldnt find anything.

do i have something to worry about? Has anyone else had this situation and if so whats the solution please?

 

Kind regards Mark

[Bernard Foy]

Pre collision system warning, usually accompanied by a red flashing.

[ThomasL]

Do you keep driving too close to stuff like other cars? 😁

[Cyker]

It basically thinks you're going to crash into something and is freaking out; You have to learn to go a bit slower and leave a bit more distance with these cars, especially if you're driving around a dense urban area - I regularly get so many false alerts in mine because it clearly wasn't tested in somewhere like London!

It's like having a very nervous passenger who is also R2D2 sometimes...!

[MikeSh]

3 hours ago, Giraffe76 said:

At total random times

If it is the pre-collision system you'll now probably notice that's it's odd situations where you see no problem but a relatively dumb computer might think you are just maybe going to drive into (eg) a parked car. For example, you see something coming the other way so you delay pulling right around the parked car until they pass you. You have it under control but the system isn't that clever.

[Jules88]

I get it a lot if driving on a bend and there are parked cars on the bend. The car notices the parked car in front of you before turning and assumes you're just going to go straight at it.

[Roy124]

If you have a dash cam try reviewing a trip where it occurs often.

[chazbri]

My Cross does it at one particular corner on a road I travel when there's no problems. 

[anchorman]

The car doesn’t know that you don’t intend crashing, if you give it that impression, it’ll use a set of predetermined parameters to decide if crashing is a possibility.  We use taxis every day at work and I got into a nearly new Corolla recently.  I asked if he liked it and he said NO! it keeps telling me to brake.   After several instances of him driving hard at parked cars then launching it onto the other side of the road, it became apparent why.  I was thinking brake too.  Mine does it occasionally when I’m purposely staying tucked in for a passing car but I don’t get offended.  It’s doing its job.  

[Benzowner]

The bit that annoys me is the collision warning of the parked car, followed by the warning that you have driven over the centre line of the road. I just say "Car your choice nearside or offside collision" 🤣

[FROSTYBALLS]

We've had pre-collision systems in our cars for years, but strangely they only seem to activate when my wife is a passenger ....

[Cyker]

1 hour ago, Benzowner said:

The bit that annoys me is the collision warning of the parked car, followed by the warning that you have driven over the centre line of the road. I just say "Car your choice nearside or offside collision" 🤣

It can be worse than that, where it also tries to stop you crossing the line but steers you back into the parked cars  

It needs more work, but driving is a lot more complicated than a simple program can deal with, otherwise we'd have self-driving cars long ago!

The thing is despite the large number of false-positives, I can't bring myself to turn it off as out of the thousands of false positives, I have had 2 or 3 true positives where the car did slam on the brakes for absolutely justifiable reasons (Although I like that I got on them first for one of them, but I think it just beat me or we tied for the others  ).

One was pretty bad though as I hadn't learned about the brake-by-wire and thought I was braking harder than I actually was based on the pedal feedback, and the car very likely helped save us from running into the car in front!

I just wish there was control I could slap or jab quickly to override them when they're wrong!

[1.33]

18 hours ago, Giraffe76 said:

Has anyone else had this situation and if so whats the solution please?

I've had the same issues as all the above, more so in urban areas or narrow roads with several parked cars. You could try adjusting the Pre Crash Safety sensitivity.