2015 Honda Odyssey: harsh or hard shifting

Filed Jan 7, 2019 · Transmission · 48,000 miles · IN

Eco causes signifiant vibration at various RPM's/speeds and delayed shifting as the computer decides to go into eco or remain. Most notable at higher speeds above 65 MPH. Current odyssey has had torque converter replaced, transmission software updated, front axels replaced and tires road force balanced. None of the above fixes has effected the vibration felt during eco going in/out and especially vibration felt in the steering wheel and cabin. Honda shop has informed me that this is par for the course for honda eco's and there is no current fix for the vibrations. This is unacceptable that no current fix is in place and should be addressed by honda as numerous complaints online of others with similar issue.

Filed Dec 17, 2018 · Engine, Transmission · 50,000 miles · PA

The vehicle makes hard shifts in lower gears, causing a lack of acceleration and then a lurch with engine/transmission clunk. Occurs when accelerating from a slowed or stopped position, so vehicle can be stationary or in motion when this occurs. Has happened before but dealership could not replicate. Similar complaints with lack of resolution found in online forums as well. Presents a significant safety concern since acceleration is altered and shifting is slowed. Has occured on residential roads and highway and at varying outdoor temperatures.

Filed Oct 4, 2018 · Engine, Transmission · 32,000 miles · CA

After reversing out of the driveway (slowly) and putting the car in drive I noticed a hard clunking sound. I thought it was just a rough shift. When I continued to drive down my block 5-15 MPH to the stop sign it continued. It feels like another vehicle is crashing into you and slamming on the breaks. You lose 'control' of the gas pedal (your foot is on the gas, you hear a large clunk and the gas pedal doesn't make you go forward anymore, for a couple seconds) it is a nerve-racking feeling and isn't correct. My vehicle was purchased in 2014 (2015 model) it only has 32k miles on it. Regular routine maintenance has been performed. It has happened a handful of times in the past 3-4 months and seems to temporarily correct itself once the car is put in park, turned off and turned back on... I have not been able to recreate it for anyone while they are in the vehicle, except my children who are scared when it happens. When the car is in park and goes to drive there is also a harsh transition; a clunk happens when shifting. It is an automatic transmission. Yesterday 10/2/18; I drove roughly a mile with no issues until I came to a stop sign, where I didn't make a complete stop and it started happening again. I waited to post, it happened again this morning 10/4/2018; the van was cold (parked all night) backed up, came to a complete stop, put it in drive, clunked like it missed firts gear, then continued to clunk as I drove between 40 and 60 feet. Stopped, put it in park, turned it back on and drove away with no issue. Shall see what happens after work today.

Filed Jun 2, 2018 · Transmission · 35,000 miles · IN

Transmission problem. When coming to a stop at low speed, and then accelerating, van has a jerk or hard shift between gears 1-2. This hard shift is enough to throw us back into our seats and does not occur at high speeds. Fluid has been flushed and torque converter changed but still occurs. It can happen after first starting car or after a long drive. Specifically notice this in yield type situations, round about a and when slowing down to turn into our neighborhood, where the car is decelerating and then accelerated. It feels as if the car does not know which groups ear to be in and then jerks down into gear after a brief pause.

Filed Aug 12, 2017 · Transmission · 33,000 miles · VA

A few months after our purchase the odyssey seemed to jerk after slowing down and then taking off (city stop and go traffic). We mentioned this at our service and the dealership said it was normal with the eco. Last week my family heading out on vacation. About 6 hours, highway driving, into our drive we came upon heavy traffic. We had several miles of stop and go. My wife was driving and then all of a sudden, the transmission seemed to slam into gear and then the van would jerk then move. This continued from a complete stop to a slow roll when she accelerated for approximately 5 to 7 events through out the congested area about 40 min. We finally cleared traffic and stopped for rest and fuel and continued on. The symptom did not return for the remainder of our trip however, we did not have the same type of heavy stop and go traffic as we did when we started. I began to researched this and found out that this is a problem that hasn't be solved. It is difficult to reproduce and seems to reset to normal when the van is turned off. I am heading to the dealer to get our van looked at and document in their system.

Filed Oct 22, 2015 · Transmission · 5,000 miles · NY

2015 exl odyssey 5000 miles driving home from work about 20 mins into my drive with 70 degree good weather. Tranny startes to clunk into gear. At first I noticed a lite clunk giving gas to pass someone. Then I noticed the clunk got worse the harder I gases it. What I realized is. That when the car shifts into gear or downshifts the tranny would slip and clunk. Then when I came to a full stop and accelarated the 1st to 2nd gear shift was terrible (bad clunk) it continued everytime the car shifted into 2nd. It was so bad I decieded to put car into 1st gear and hold it and manually shift to 2nd. I was able to soften the clunk by taking my foot off gas counting to 3 and then shifting while decelerating. However I did notice that the more load on tranny during shifts translated into a harder clunk. Anyway I limped car home went on on internet and found many people to have this problem, what I found was people saying to turn off car and restart, thus resetting the computer. And yes I did that and problem gone. So basically I think that the tranny may have an adapitve learning module for the tranny that tells valves in tranny when to shift. And I think that when I was driving and went to pass someone I must have glitched the computer with to much load at just the wrong time during a shift. Which made the computer engage the shift later then the valvebodies to create that clunk. I.e. When your car is about to shift into 2nd gear and you leave your foot off gas and than gas it at exactly the time of the shift you get that clunk, only not as bad as what I was experiencing. From what I am reading I will not even bother call the dealership about this unless the problem continues and gets worse. But for now I will be mindful of my shifts and how I hit the gas during my shifts. Cant wait till my lease is up. No honda for me next time. I am only 3 months into my lease so very sad

Filed Sep 6, 2015 · Engine, Transmission · 10,000 miles · OH

While accelerating after being stopped at a stop sign, the car made a clunking noise and the car jerked severely as we accelerated into gear. It happened at least 2 more times after being stopped at a couple of stop signs. It was very frightening when it happened and is a safety issue as the driver's attention is taken away when it happens. The scariest part is not knowing when it's going to happen. When there is a need to accelerate quickly across traffic, we are worried the same thing will happen again or that the car won't make it through the intersection. I don't feel safe driving this vehicle while the issue is outstanding. This is an unacceptable issue that having read other forums is happening to others with 2014 and 2015 odyssey's and the dealerships are bot understanding the cause or fix for the issue due to it happening sporadically. This calls for action before it leads to someone being harmed. It's a major issue and pressure needs put on honda to fix the issue!

Filed Jul 22, 2015 · Transmission · 1,610 miles · FL

I was driving in rush hour stop and go traffic and once I stopped and accelerated between 10 - 20 MPH the car would make a loud clunking noise and the car would shake as if the car was slipping gears, and then would drive fine. Once I stopped again and accelerated it would do the same thing. It did this 6 times in a row so I pulled over and had it towed to the dealer. Dealer could not replicate issue, no codes or errors could be seen, and the car had the latest software update. I requested the dealer hold onto the car for two days to try and replicate the issue. Awaiting results.

Filed Mar 14, 2015 · Transmission · 594 miles · VA

Very loud clunk noise and vehicle jerks when shifting from 1st to 2nd gear going approximately 20 miles. Could not duplicate the issue after engine restart. Not acceptable behavior with vehicle over $40k and under 1k miles of use.

Filed Feb 21, 2015 · Transmission · 2,800 miles · FL

I just recently bought a 2015 honda odyssey (jan.2015) and at around 1700 miles I felt a double clunking sound/jerk when I was going at about 15 MPH to 20 MPH. I kept riding my van straight to the dealer and every time I came to a complete stop, and started up again, it would make the same loud clunk when shifting from 1st to 2nd at around 20 MPH. My biggest mistake was to turn the engine off when I arrived at the dealer, as when you do that, the issue goes away (I wish I knew this issue the first time, cause now honda has not been able to duplicate the problem). It has happened 3 times and my van has about 2800 miles. The third time it happened was late in the day, service dept. Was closed, so no luck there. I just went ahead and recorded the anomaly as I was driving it. After a few shots of it, I pulled over, re-started the van/engine (as I know that clears up the issue) and after that it continued as nothing ever happened (I also recorded that too to show the dealer). I emailed the assistant manager at my local honda service dept and attached the videos. Hopefully,they will come with a solution soon, as they have not been able to duplicate the anomaly. I found out that there are synchro sensors in all honda transmissions, one for every shift. Well, it sounds like the synchro sensor that goes from 1st to 2nd is the one acting up. I mentioned that to the techs at honda and hopefully they will look into it. No rhyme or reason, just does it and honda keeps saying that there's nothing wrong, and nothing shows on their computer when they plug in the diagnostics system to the van.