tolian21

I’ve recently noticed that brake pedal when pressed in parking lot while car is idling moves considerably down, maybe 1-2” from the floor. Car stops good, but brake pedal needs considerable movement to harden. I am not sure if this was always like that, or its a new issue.

brake pads and fluid all new…. Do these cars have big movement of brake pedal? I know in my acura it hardens very quickly after pressing it, but here there is move movement before it hardens.

Clutchless

Lexus is known for a soft brake pedal. That sounds about normal for Lexus brakes.
If you just had brake work done by a shop and have concerns take it back to them with your complaint. Maybe they need to bleed the brakes again.

w84me

I was having similar issue. Found car inching forward at stop light because wasn't pushing brake far enough down. not sure if it was a new issue or not. anyway, replaced all brake hoses, calipers, new pads, new rotors and bled system. Finally found a few vacuum lines in the engine that were not clamped down very good, and used worm gear clamps to secure them. Seems better now, but still soft. Car no longer getting away while sitting at stop light. You might try the vacuum lines first.

I also found one caliper in rear that "may" have had a small leak. tiny, tiny leak. could not really tell. that could have been it too. didn't matter, was replaced.

tolian21

Thanks. I did not feel any difference before or after brake fluid change. I dont drive this car much, mostly driven by my wife. She thinks its the same as it always was, or maybe she just got used to it. Its one of those things when you are not sure if its normal or not. I'll have my mechanic check it out

Wilson2000

FYI...Don't use worm-gear hose clamps on vacuum lines as they can crack plastic bibbs. It's better to replace the worn hoses and if they did not have clamps originally, they won't need clamps when replaced. Any vacuum hoses/tubbing that did come from the factory with clamps, will have spring clamps, as spring clamps won't crack plastic bibbs.

AA2016

I’ve read through various threads here and a soft brake pedal seems to be widespread. That being said, if it goes too much to the floor it might indicate a problem.

I had my brake master cylinder replaced a few years ago, but it only helped the “softness” a little bit. I did use a cheap aftermarket one so if I could go back, I’d replace with the OEM part (only about $200).

w84me

Probably not a bad idea, but I'm a careful mechanic The spring clamps were not holding the vac lines in, they could be pulled off with spring clamps on. I did leave the spring clamps on, in case the next guy wants to remove the worm clamps.

Wilson2000

The spring clamps don't get worn or stretched with age unless they are man-handled. However, the hoses shrink and/or harden with age, then the clamps don't hold properly. If the vacuum tubing is replaced with new tubing of the same ID/OD, the original clamps work fine again. That said, it is difficult to find tubing with with the same ID/OD as stock, unless one goes to the dealer and pays through the nose!

tolian21

So what is the normal distance when your car idles in park and you press the pedal, how many inches from the floor pedal supposed to stop?

bt10

wrong thread, sorry