I have an ‘06 Highlander Hybrid. I‘ve noticed when applying my brakes on a bumpy road it feels like the brakes temporarily release and catch again. Luckily I‘ve never been going fast enough, or had something close enough to worry, but now that they‘ve found problems worth recalling the new Prius I‘m wondering if anyone else has heard of potential problems with either the Highlander or hybrids in general.
so which you replaced the rotors a pair thousand miles in the past and this venture of no brakes has basically got here approximately precise? you assert once you push on the pedal difficult it form of feels to slightly sink, you already know it might sink slightly, you're pushing difficult are not you? the huge question is does it carry nonetheless or does it slowly circulate down. if so the grasp cylinder is undesirable, if not it is working basically fantastic. Air interior the device provides you with a spongy pedal like stepping on a moist sponge. whether it is hard there's no air interior the line. All that and that may not addressing the no brakes your mom pronounced. Ask mom what she skill by way of no brakes. Does it advise the pedal is going to the floor or does the pedal bypass to the conventional spot yet there's no skill brakes? i'm thinking that there is a vacuum leak to the brake booster or the booster its self is undesirable if the pedal does not drop to the floor. the only element turning has to do with issues is the engine is at idle while turning and that brings up something thoroughly distinctive. So automobiles (GM) use the skill guidance pump to act because of the fact the booster for the brakes. that would desire to be why she says there's no brakes while turning, the pump is going out and could not grant skill for the two jobs. that is on condition that the pedal does not bypass to the floor. you could tell what device you have by way of finding on the grasp cylinder, is there a huge around element with a vacuum line or a small element with lines from the skill guidance pump coming to it.
That may be the cause, but it could be the ABS kicking in too. Try it on a paved road and see if it does it again. If it does, then you know its the recall problem. If not, then its just ABS. (anti lock brake system)
In the HyHy you have a similar brake system to the Prius and other hybrids. In those the brake system relies on regeneration at lower brake pedal pressures, and regeneration is disabled on uneven surfaces when the unevenness gets bad enough. I notice it in my 2002 Prius on moderate downhills when I go over rough road patches. It is entirely a regeneration issue, though - if you press harder it does not show up. I learned to hate ABS in the first vehicle I ever drove with ABS, a 1993 Chevy Silverado work truck. It had the primitive ABS that was so common in pickups and SUVs of that era, and going over railroad tracks with an intersection just beyond them the brakes would release entirely, no matter how hard I pushed. I would have sworn the truck was accelerating, but it was just not stopping at all.
