Who has done their recall?

Very much so for me as well. Looks like the firmware "fix" that was done 2 or 3 years back didn't really fix it? Sorry to be going on a tangent, but did it use to be much worse before the past firmware fix? [ I got my used Prius after the fix was already applied]

 

My 2012 leaps forward when I mash the Go Pedal to the floor when the light goes green

Mike

 

Weigh down the rear of the vehicle so the ABS doesn't trigger as easily when the rear tires slip over the bumps...the battery just isn't heavy enough.

This was REALLY bad on my Honda Fit 2008 with rear drum brakes. The ABS kicks in so hard, I could stand on the pedal and it could still push me back...and that's when I actually did rear-end someone even with a 3 car lengths in front of me going 30 mph (final impact was around 5 mph). I had a friend with me who told me, he thought I somehow let up off the brakes cause the car was slowing and then didn't slow anymore...just a lot of grinding (ABS noise).

It still happens on the Prius around the same areas but not nearly as bad - I think partially due to a better ABS system, disc brakes, and greater weight.

Pretty sure my 2013 doesn't have a brake recall and certainly the most recent recall had nothing to do with braking and so I still experience the same thing. It's really not unique to this car...I've ridden in other vehicles - personal and taxies - all exhibit the similar symptoms on the same roads...the heavier the car the less severe it is.

Bottom line is our roadways suck.

 

Last winter trashed all the roads in the frozen states. Potholes, cracks, bumps everywhere now. Going to take some serious money to get them back into shape. A shame

Mike

 

I will never get used to the "leaping" sensation or loss of braking when I brake over a bump or manhole cover.

Thanks, I noticed this, mostly over man hole covers in Chicago.
My wife (who mostly drives the car) had never noticed it.
She thought I was crazy. I'm glad to hear it is not just my car.

 

It's an artifact of regenerative braking. Seems to be true across the board (including the Volt) to some extent.

 

I live in a Chicago suburb. Near where I live there is a manhole cover in approach to a stop sign. Each time I hit my brakes on that manhole cover the car lunges forward. It does the same thing when I hit my brakes on some bumps in the road. Scary situation.

 

Well it happened.... Yellow triangle with ! along with "Check Hybrid System".
My fiancée had the brake recall and inverter recall done last Friday. It took longer than expected. They dealership said it was giving them a hard time. After completing the updates she picked up and car and drove the 50 miles home. She also drove the 100 miles round trip Saturday and Sunday with no issue. Now Monday she drove it a few blocks to get the mail and got the yellow triangle with ! The HSI says, "Check Hybrid System". So tomorrow we get to have the hassle of dealing with the dealership again! It was a Certified vehicles when she bought it last August and she only has about 90,000 miles on it. When she bought the car she also bought the extended warranty from Zurich through the dealership. So I do hope this goes as painless as it should with the various coverages she has for the car but..... we will see.

Any thoughts of what might have gone wrong with the Hybrid System that she was able to drive it 250 miles before the warning show up?

P.S. This isn't making me want to rush out and get the inverter recall done on my Prius...

 

It could be completely unrelated. I'd wait to see what the dealer says before jumping to any conclusions.

 

Well the dealership had the car towed to the dealership and provided my fiancee a rental car. They called her today. They said there's a nick in the high voltage cable. The nick is near the A/C unit. They said its a good thing no one touched where the cable was nicked because they would have been killed. I'm thinking the new software has more fault detection and detected a condition that already existed prior to the recall update. We've had a lot of rain lately which may have created enough of a short or drain on the system that the software detected it. It will take a week to get the new cable and get it installed.

 

The HV ground fault detection system has been in place all along. Who knows whether the recent software update had any improvements to the detection system but I would tend to doubt it as this was not the purpose of the update according to the Toyota descriptions on their website.

 

Had it done two weeks ago. It took about an hour for the software to be updated. No problems. I have a great dealer in a small town, so they all know the owners who bring their cars in.

 

Well, I have done the recall. (sorry, on topic )

The "leap forward" is an effect your brain generates when acceleration is stopped - acceleration can have both a + and a - sign, in this case it's a - sign. So your brain thinks you accelerated forward when in fact you stopped accelerating backward (from braking).
It's caused by both the antilock and HSD protection systems, sensing a wheel suddenly very rapidly decelerating rotation (because it's in the air and not on the pavement) and therefore removing braking force. The reason the antilock system does it is obvious but the HSD system does it to reduce shocks to the HSD - remember that some of the cars braking force can be generated by regen.

It could be the above poster already had the damage the recall was intended to stop, but the dealership wasn't able to detect (not sure how they could without some very complex use of expensive equipment). As I understand it, they (the dealer service departments) are to replace the inverter if the warnings were displayed and logged into the computer. If the car was brought in just before the problem was detected by the cars computer then the dealer wouldn't have replaced the inverter.
It should be fine after they replace it.

-DO- have the recall done to prevent it from happening to you!

 

It has been fixed. I hit a wet grate today and was waiting for the floating sensation and nothing, it just carried on braking as normal. I believe the brake recall a while back corrected the issue. If anyone is still suffering the floating issues, then I wonder if their car needs looking at?

 

I apologize for keeping this subject off of the original thread topic

I have completed all three recalls, including the first brake recall for the brake transition from regen to friction brakes. I can still feel the transition when I hit a pothole or slick surface while braking lightly. So the recall did not fix the problem on my 2010. I think it improved the transition timing but did not completely fix the problem.

I fully understand what is happening when a tire loses traction while lightly braking so I just increase brake pedal pressure when this happens to compensate. It still catches me off guard when this happens at times though.

For those that experience this try this experiment to understand what is happening. The next time you are braking for a stop light, and have plenty of room in front of you, shift to neutral. This will disable the regen braking and force the friction brakes. You will need to increase the brake pedal pressure in order to have the same amount of braking as the prior regen braking. This is what happens when a tire loses traction when you hit something slick or hit a bump such as a pothole.

Once you understand this maybe it will not catch you completely by surprise the next time it happens. It will take your breath away the first time you experience it though.

 

just reapply your brakes when you hit a pothole

 

One thing that I have noticed after the EoE Software Recall is that when I am driving through my neighborhood and make a 90 degree turn and then go to accelerate there is a slight hesitation and sometimes a stumble of the ICE. I am running about 25 mph and by the time that I slow down to make a turn my speed has slowed to about 15 mph. 15 mph is the normal transition point on take-off from MG2 to the ICE firing off.

Before the recall MG2 would normally take the first power increase request and acceleration was always smooth as silk to me. Now that they have delayed the electric response the ICE takes the first power increase request. It seems like the ICE has trouble trying to accelerate at this 15 mph point without the help of MG2. From what I understand 15 mph is where the Atkinson cycle ICE is just beginning to produce enough torque to start helping MG2.

Has anyone else noticed this?

 

LOL, quite a few of us mentioned that in this very thread throughout all those pages.

 

I see 37 pages

Mike

 

Sorry I missed it. Could you point me to a particular post # ?