Rx400h braking problems.
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Intermediate
Joined: Nov 2007
Posts: 250
Likes: 160
From: WI
Rx400h braking problems.
My 2008 Rx400h has always had the well described "braking surge" problem on occasion. I notice it on slow speed braking, typically at an intersection. I will be pressing down on the brake pedal and then suddenly will feel like I am losing braking capacity. The immediate responce to to hit the brake harder and the vehicle always then slows down properly. I don't think the car actually surges forward much but it probably would if you didn't respond quickly. I am not the only one. There are several threads on the internet describing this.
https://www.clublexus.com/forums/hyb...-breaking.html
This has always been written off as normal "hybrid braking." Now with the Prius braking problems, I wonder if we are next in line for a repair???
https://www.clublexus.com/forums/hyb...-breaking.html
This has always been written off as normal "hybrid braking." Now with the Prius braking problems, I wonder if we are next in line for a repair???
Last edited by jrobe; Feb 5, 2010 at 11:52 AM.
Driver School Candidate
Joined: Feb 2010
Posts: 2
Likes: 0
From: NJ
I had the same problem,
and reported it to two different dealerships who claimed they never heard of the problem. I felt they were suggesting I imagined it and I am still driving with the problem. While not a serious safety issue since the brakes do apply eventually it's not something that should happen.
It goes off lease soon and am seriously considering the MB M class even though I loved my RX.
It goes off lease soon and am seriously considering the MB M class even though I loved my RX.
Pole Position
Joined: Feb 2002
Posts: 385
Likes: 1
From: CA
I have not been able to duplicate the problem but it's only happen to me twice since I've owned the car. First time I was pulling into the Autozone I put my foot on the brake as I pulled into the parking space pressed the brake pedal to stop there was a delay and I ended up pressing the brake harder to stop which came to a abrupt halt. I panicked because I thought something went wrong but I haven't been able to duplicate the problem since. Second time I was trying to stop and to turn into to a parking lot. The brakes already have no "feel" to them but I ended up running right up to the parking entrance still going about 35mph and set off the ABS when I realized I still had too much speed and I couldn't tell if I was braking hard or not, strange. Then I hear about the Prius braking problems about 6 months later. No point in going to the dealer for it because it's only happen twice the second time maybe I'm just not used to the electric brakes since I don't drive it too often.
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Driver School Candidate
Joined: Mar 2009
Posts: 2
Likes: 0
From: NY
i have noticed it too in my RX. I think the lack of braking response will cause problems in close quarters with another vehicle but as long as you have a reasonable distance between vehicles it should be okay. its not as predictable but occours fairly commonly to be worthy of notice
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Driver School Candidate
Joined: Sep 2009
Posts: 16
Likes: 0
From: AL
I think its something with the CVT trans, its going into nuetral while braking.
Lead Lap
Joined: Aug 2004
Posts: 542
Likes: 3
From: New Jersey
I have noticed it too. Do you know what the fix was? Maybe I will ask the dealer since its still under warranty. my wife has never had it happen but I have more than a few times.. I just expect it now...
I think its something with the CVT trans, its going into nuetral while braking.
I think its something with the CVT trans, its going into nuetral while braking.
Lead Lap
Joined: Aug 2004
Posts: 542
Likes: 3
From: New Jersey
I had the new regular RX 350 as a loaner and I loved it. It also didn't skid over wet manholes when you braked. I test drove the new 450h to make sure I was making the right decision. I traded in my 400h in August. In light of the past winter with the never ending snow I was very happy with my decision. Of course now the price of gas has skyrocketed, but I don't drive that many miles.
Last edited by LexRexBlue; Apr 29, 2011 at 01:54 PM. Reason: didn't proofread
Driver School Candidate
Joined: Dec 2017
Posts: 1
Likes: 0
From: Ireland
Brake problem rx400h
My 2008 Rx400h has always had the well described "braking surge" problem on occasion. I notice it on slow speed braking, typically at an intersection. I will be pressing down on the brake pedal and then suddenly will feel like I am losing braking capacity. The immediate responce to to hit the brake harder and the vehicle always then slows down properly. I don't think the car actually surges forward much but it probably would if you didn't respond quickly. I am not the only one. There are several threads on the internet describing this.
https://www.clublexus.com/forums/hyb...-breaking.html
This has always been written off as normal "hybrid braking." Now with the Prius braking problems, I wonder if we are next in line for a repair???
https://www.clublexus.com/forums/hyb...-breaking.html
This has always been written off as normal "hybrid braking." Now with the Prius braking problems, I wonder if we are next in line for a repair???
Last edited by Jmitch63; Dec 10, 2017 at 01:56 AM. Reason: Spelling errors
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sleepysurf
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Feb 26, 2010 07:21 AM
