Brakes go ON - OFF - ON
#1
Brakes go ON - OFF - ON
whats up all,
my girlfriend drives an 06 xA (auto) she has told me the brakes feel weird sometimes. she couldn’t really describe the feeling. so Saturday night i took it for a ride. here is what happens...
it seems to only happen when going down hill. hit the brakes...and it feels like they grab...then let go for a second...then grab again. its almost like the ABS is kicking in but the car isn’t sliding. it doesn’t vibrate like an ABS stop either...its a very smooth on - off - on feeling. The car almost feels like its accelerating during the OFF stage. im going to take it into the dealer this week but i wanted to know if anyone else had a similar problem. my xB doesn’t do this but mine is also a stick. i thought maybe the tranny has something to do with it. it doesn’t happen every time either which should be fun when we get to the dealer....
any input would be awesome…I just read the thread about the xA that randomly locks the brakes up and I don’t want this to happen to her especially when her 2 ½ year old is in the car.
my girlfriend drives an 06 xA (auto) she has told me the brakes feel weird sometimes. she couldn’t really describe the feeling. so Saturday night i took it for a ride. here is what happens...
it seems to only happen when going down hill. hit the brakes...and it feels like they grab...then let go for a second...then grab again. its almost like the ABS is kicking in but the car isn’t sliding. it doesn’t vibrate like an ABS stop either...its a very smooth on - off - on feeling. The car almost feels like its accelerating during the OFF stage. im going to take it into the dealer this week but i wanted to know if anyone else had a similar problem. my xB doesn’t do this but mine is also a stick. i thought maybe the tranny has something to do with it. it doesn’t happen every time either which should be fun when we get to the dealer....
any input would be awesome…I just read the thread about the xA that randomly locks the brakes up and I don’t want this to happen to her especially when her 2 ½ year old is in the car.
#2
Well, if you are going down hill, and the brakes let off, then naturally you are going to accelerate.
My tC does this sometimes. But it's generally when I go around a corner or start going down hill while the back tires are still flat (like a drive way). I am pretty sure it's the ABS which act similar to traction control.
But getting it looked at wouldn't hurt.
My tC does this sometimes. But it's generally when I go around a corner or start going down hill while the back tires are still flat (like a drive way). I am pretty sure it's the ABS which act similar to traction control.
But getting it looked at wouldn't hurt.
#4
Brake problems can be scary. I also saw the other thread about xA brakes locking up. You gotta get to the dealer right away.
Have you check the brake fluid? Also, have you inspected the rotors themselves? I'd take off the wheels and get up under there to have a look.
Good luck. Let us know what you or the dealer finds.
-THE DON
Have you check the brake fluid? Also, have you inspected the rotors themselves? I'd take off the wheels and get up under there to have a look.
Good luck. Let us know what you or the dealer finds.
-THE DON
#6
Is it a quick almost grab and then it lets off?
Mine does that at times, it feels like you stabbed the brakes then let off slightly but you have kept a constant pressure on them.
I just figured it was the ABS, it never feels like it's trying to take control or anything. Let us know if there is a problem.
Mine does that at times, it feels like you stabbed the brakes then let off slightly but you have kept a constant pressure on them.
I just figured it was the ABS, it never feels like it's trying to take control or anything. Let us know if there is a problem.
#8
one of those babies right through the windshield should do the trick. I'm about ready to perform that upgrade on mine....
For real though, I've never experienced that in the box but I have felt the pedal do a weird thing when stopped. If I have it pressed down for a few minutes it just goes down a little further on its own, kind of like it's exhausting air or something.
#12
Yeah, you should take it to the dealership, but you don't need to get so freaked out about it.
Like I said, that does happen in my tC, and with oldmanatee's description, I would say that you are feeling the same thing that I am feeling. I did go to the dealership about it, and they told me that it was the ABS. They even took it for a test drive to see what I was talking about.
The ABS is the tC (and possibly the xA) is a bit different from any other ABS that I have had before. It does act like a traction control and doesn't feel quite the same as a quick ABS vibration that you would feel in another car. So, it can be alarming.
But, you could have a totally different issue. There is no harm in taking it to the dealer.
Like I said, that does happen in my tC, and with oldmanatee's description, I would say that you are feeling the same thing that I am feeling. I did go to the dealership about it, and they told me that it was the ABS. They even took it for a test drive to see what I was talking about.
The ABS is the tC (and possibly the xA) is a bit different from any other ABS that I have had before. It does act like a traction control and doesn't feel quite the same as a quick ABS vibration that you would feel in another car. So, it can be alarming.
But, you could have a totally different issue. There is no harm in taking it to the dealer.
#15
Er, this is the SECOND thread on this - lemme see if I can find the other thread - somebody else appears to be experiencing something very similar.
Here it is: https://www.scionlife.com/forums/viewtopic.php?t=172181
If nothing else Scion Corporate NEEDS to know about this ASAP: (866) 707-2466
Tom
Here it is: https://www.scionlife.com/forums/viewtopic.php?t=172181
If nothing else Scion Corporate NEEDS to know about this ASAP: (866) 707-2466
Tom
#17
If it is a slow on - off - on then I would suspect a vacuum problem maybe a leaking hose or a check valve that is stuck open. If the vacuum boost for the brakes is low when you first apply the brakes then a second later the engine makes more vacuum since you just took your foot off the gas then the brakes work even better. The ABS usually pulse the brakes quickly and you would feel it in the pedal - totally different feeling. You should also check your tire pressure in all four tires to make sure they are correct and equal left and right sides the same. Last you should auto adjust the rear brake shoes by backing up 3-5 mph and pump the brakes firmly several times without locking up the front wheels (that's too hard) and see if the brake pedal starts to grab higher up when you go forward again. Could be the rear shoes wearing out a little and they need tightening up which happens when you apply brake going backwards.