Has anyone who has experienced this problem taken their car to a Lexus workshop (or any other) where they have been able to replicate the problem???
surge forward when braking
guys, i was driving towards a round about the other day. as usual, i will slow by car down by tapping on the brakes.
tapping on the brakes usually activates the Traction brakes. which charges the battery.
however, i hit a bumpy patch of the road.
suddenly, i lost all braking from traction brakes. my car surged forward (as if there were no brakes at all).
i almost crashed in to the roundabout.
help!!!
tapping on the brakes usually activates the Traction brakes. which charges the battery.
however, i hit a bumpy patch of the road.
suddenly, i lost all braking from traction brakes. my car surged forward (as if there were no brakes at all).
i almost crashed in to the roundabout.
help!!!
41 - 53 of 53 Posts
Thought this recall notice for the Prius from 2010 was interesting in relation to this thread :
Toyota—Prius ZVW30 vehicles—Brake Feel
PRA number: 2010/11412
Date published: 9th February 2010
Product information
Product description
Prius ZVW30 vehicles
Identifying features
Model: Prius, Model Code: ZVW30.
WMI: JTD. VDS: KN36U*. Frame No. Range (VIS) 01000092-01157273. Production Period: 07/04/2009 - 27/01/2010.
WMI: JTD. VDS: KN36U*. Frame No. Range (VIS) 05000003 - 05118023. Production Period: 13/01/2009 - 27/01/2010.
Note:
1. Although the involved vehicles are within the above VIN ranges, not all vehicles in these ranges were sold in Australia.
2. # = Check digit (alpha or numeric)
Campaign number: 0508B
Target number: 2378
What are the defects?
Due to programming of the ABS (Anti Lock Braking System) there is a possibility that the braking force may be slightly degraded on completion of ABS activation. In situations where the brake pedal is lightly held and ABS is activated for a moment on icy or bumpy roads, the vehicle stopping distance may be longer.
What are the hazards?
Mechanical malfunction
Where the product was sold
Nationally
Supplier
Toyota Motor Corporation Australia Limited
What should consumers do?
Toyota Motor Corporation Australia Limited will write to owners of all affected vehicles.
Toyota—Prius ZVW30 vehicles—Brake Feel
PRA number: 2010/11412
Date published: 9th February 2010
Product information
Product description
Prius ZVW30 vehicles
Identifying features
Model: Prius, Model Code: ZVW30.
WMI: JTD. VDS: KN36U*. Frame No. Range (VIS) 01000092-01157273. Production Period: 07/04/2009 - 27/01/2010.
WMI: JTD. VDS: KN36U*. Frame No. Range (VIS) 05000003 - 05118023. Production Period: 13/01/2009 - 27/01/2010.
Note:
1. Although the involved vehicles are within the above VIN ranges, not all vehicles in these ranges were sold in Australia.
2. # = Check digit (alpha or numeric)
Campaign number: 0508B
Target number: 2378
What are the defects?
Due to programming of the ABS (Anti Lock Braking System) there is a possibility that the braking force may be slightly degraded on completion of ABS activation. In situations where the brake pedal is lightly held and ABS is activated for a moment on icy or bumpy roads, the vehicle stopping distance may be longer.
What are the hazards?
Mechanical malfunction
Where the product was sold
Nationally
Supplier
Toyota Motor Corporation Australia Limited
What should consumers do?
Toyota Motor Corporation Australia Limited will write to owners of all affected vehicles.
Lunging brakes
My 2013 brakes also lunge--particularly on a bumpy road.....
Toyota has had class action lawsuits over this; sounds like the same problem
My 2013 brakes also lunge--particularly on a bumpy road.....
Toyota has had class action lawsuits over this; sounds like the same problem
[QUOTE=dentgal;1709922]My 2013 brakes also lunge--particularly on a bumpy road.....
Toyota has had class action lawsuits over this; sounds like the same problem[/QUOTE]
Have you had your braking system checked to your satisfaction by an authorised Lexus technician? Most likely, as has been discussed on this Forum about a year ago with over forty contributions, the "problem" is in fact almost certainly no more than the unfamiliar feeling and function of an ABS braking system in operation. The fact that there has been no action by Lexus over the last twelve months would seem to indicate that there is no known malfunction.
Toyota has had class action lawsuits over this; sounds like the same problem[/QUOTE]
Have you had your braking system checked to your satisfaction by an authorised Lexus technician? Most likely, as has been discussed on this Forum about a year ago with over forty contributions, the "problem" is in fact almost certainly no more than the unfamiliar feeling and function of an ABS braking system in operation. The fact that there has been no action by Lexus over the last twelve months would seem to indicate that there is no known malfunction.
Source: Bloomberg, Jan 11, 2013
A US district court judge in California threw out a class-action lawsuit from owners of Toyota Prius and LexusHS 250h hybrids who had filed a claim against the Japanese automaker over a 2010 recall involving the vehicles' anti-lock braking system, Bloomberg News reports.
The claim, made by four vehicle owners on behalf of the rest of the owners, related to a 2010 recall that involved a software update for the vehicles' anti-lock brakes. The judge denied the claim because the plaintiffs suffered no injury, thus ending three years of litigation. A Toyota spokeswoman told Bloomberg News the company was "pleased" with the court's decision.
In early 2010, Toyota – at the time also reeling from floormat/unintended acceleration issues involving both Toyota and Lexus models – said some Prius models sold in January of that year had a braking-system design issue that had later been corrected. Both the US and Japanese governments that year required Toyota to investigate the issue, which involved a short, temporary loss of braking during the transition between regenerative and friction brakes on slick or bumpy surfaces.
A US district court judge in California threw out a class-action lawsuit from owners of Toyota Prius and LexusHS 250h hybrids who had filed a claim against the Japanese automaker over a 2010 recall involving the vehicles' anti-lock braking system, Bloomberg News reports.
The claim, made by four vehicle owners on behalf of the rest of the owners, related to a 2010 recall that involved a software update for the vehicles' anti-lock brakes. The judge denied the claim because the plaintiffs suffered no injury, thus ending three years of litigation. A Toyota spokeswoman told Bloomberg News the company was "pleased" with the court's decision.
In early 2010, Toyota – at the time also reeling from floormat/unintended acceleration issues involving both Toyota and Lexus models – said some Prius models sold in January of that year had a braking-system design issue that had later been corrected. Both the US and Japanese governments that year required Toyota to investigate the issue, which involved a short, temporary loss of braking during the transition between regenerative and friction brakes on slick or bumpy surfaces.
Toyota has several class actions, but I am pretty sure that none of them currently involve the imaginary acceleration during braking "problem".My 2013 brakes also lunge--particularly on a bumpy road.....
Toyota has had class action lawsuits over this; sounds like the same problem
[QUOTE=dentgal;1709922]My 2013 brakes also lunge--particularly on a bumpy road.....
Toyota has had class action lawsuits over this; sounds like the same problem
Once you know how it works, it is actually quite fun. I can almost make it work every time now when I go over a speed bump. You just have to time it right and apply brake just moment before hitting the bump and you will go over the bump and feel like you lost the brake for fraction of a second. It is like a roller coaster ride and keep you heart pumping...Have you had your braking system checked to your satisfaction by an authorised Lexus technician? Most likely, as has been discussed on this Forum about a year ago with over forty contributions, the "problem" is in fact almost certainly no more than the unfamiliar feeling and function of an ABS braking system in operation. The fact that there has been no action by Lexus over the last twelve months would seem to indicate that there is no known malfunction.
Actually, there are certain conditions when it is not advisable to brake: black ice, snow, ice, hydroplaning, initial rain, and other hazardous road conditions such as loose gravel or bumps. A good driver is aware of their environment and road conditions and anticipates problems in advance, defensive driving. Just because a person has a CT200h doesn't necessarily mean they are a good driver. The regenerative breaking functions as designed and works very well, if you are able to drive appropriately and can understand its complexities.
Actually, there are certain conditions when it is not advisable to brake: black ice, snow, ice, hydroplaning, initial rain, and other hazardous road conditions such as loose gravel or bumps. A good driver is aware of their environment and road conditions and anticipates problems in advance, defensive driving. Just because a person has a CT200h doesn't necessarily mean they are a good driver. The regenerative breaking functions as designed and works very well, if you are able to drive appropriately and can understand its complexities.
agreed on the conditions.
i think what people are really experiencign is when the regen brakes handover to the discs hence, they "feel" the sensation of surging. but in actual fact it isnt.
brakes
Second or two means accident.
CT has to be recalled.
Too many people having issue to ignore.
Have been driving 32 years many cars and never had loss of brakes on any road surface.Actually, there are certain conditions when it is not advisable to brake: black ice, snow, ice, hydroplaning, initial rain, and other hazardous road conditions such as loose gravel or bumps. A good driver is aware of their environment and road conditions and anticipates problems in advance, defensive driving. Just because a person has a CT200h doesn't necessarily mean they are a good driver. The regenerative breaking functions as designed and works very well, if you are able to drive appropriately and can understand its complexities.
Second or two means accident.
CT has to be recalled.
Too many people having issue to ignore.
I totally agree. Facing the problem. The car does surge while braking. Nothing to hide - if the expected deceleration is changed, that is an unexpected behavior, and could lead to accident in a fraction of a second. I almost face this issue every time, because of a 4 way stop sign, and a pothole while driving towards it. Invariably, if no other cars come in the opposite direction, i tend to avoid the pothole - but can't always. Everytime i can't i feel the surge / abruptness during braking.Have been driving 32 years many cars and never had loss of brakes on any road surface.
Second or two means accident.
CT has to be recalled.
Too many people having issue to ignore.
If this is an issue you have been affected by (as I have), I urge you to file a complaint with the NHTSA through their website NHTSA.GOV
It is a very easy process to file this complaint and is one of the only ways to bring this issue to the forefront to trigger a recall. Be safe out there!
It is a very easy process to file this complaint and is one of the only ways to bring this issue to the forefront to trigger a recall. Be safe out there!
My 2012 ct200h lurches forward as well. Not normal. Does it when I park as well sometimes. Other thread says it is a transmission problem. Both threads have angry people hurling insults. Strange. Why are people so dang salty on the ct threads? Dang. I have questions. Couldn't angry people that want to insult complete strangers looking for help just not comment? I have to say, the Cadillac threads are much more civilized lol. Jk, sorta. Be nice people who comment.guys, i was driving towards a round about the other day. as usual, i will slow by car down by tapping on the brakes. tapping on the brakes usually activates the Traction brakes. which charges the battery. however, i hit a bumpy patch of the road. suddenly, i lost all braking from traction brakes. my car surged forward (as if there were no brakes at all). i almost crashed in to the roundabout. help!!!
41 - 53 of 53 Posts
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