Sonata I45 (LF 2015+) :: Transmission Stuck And Not Shifting Between 3rd And 4th Gear

As I was entering a highway onramp today, the transmission stuck and didn't shift between what I'm guessing was 3rd and 4th gear. It was revving at about 5000 RPM and stayed there.

After what felt like about 10 seconds, it got its act together and shifted and the revving stopped.

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Sonata I45 (LF 2015+) :: Transmission Rough / Shifting Lag Or Slippage Only In First Gear

I around 1200 miles. The car would get going when i give it gas but it feels as if their was shifting lag or slipage. Only in first gear. Doesn't happen all the tho..usually happens on rolling stops... is this normal?

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Toyota :: No Cold Air Blowing From AC When Waiting At A Stop Light

I have a 94 toyota pick up automatic and my ac works great while I am driving. As soon as I come to a stop light and I am sitting and waiting for it to turn green. The air still blows from my ac but it isn't cold. My truck works great it has about 210,000 miles.

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Sonata I45 (LF 2015+) :: ECO Transmission - Neutral At Stop Lights Save Gas Compared To Drive?

Eco Transmission. Neutral at stop lights save gas compared to Drive?

I almost feel like when I'm stopped in Drive it's actually in neutral. I'm curious if being in Neutral at really long red lights would save gas?

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Ford A/C :: Engine Running At High Temps When Idling Or Waiting At A Long Stop Light

I have a 390 FE engine and whenever I am idling or waiting at a long stop light my engine temperature goes from the regular temp of 180 to about 190 to 210. How to keep the temp normal when idling? I have checked my fluids and they all seem to be fine, I don't know why it would be doing this.

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Sonata I45 (LF 2015+) :: HIDs Flickering For About 5 To 15 Seconds Then Stop

Both of my bulbs flicker, intermittently. They will flicker, most times not at the same time as one another, for about 5 to 15 seconds then stop. I have not yet been able to detect a pattern. The battery is fully powered and the resistors are not throwing a code so I assume they are working (I installed them to eliminate an error code and stabilize the voltage). The capacitors (or "error eliminators") I have installed do not seem to do anything.

This problem just started recently too, they never used to flicker at all. The only problem I had is I used to get a bulb out warning but like I said I got rid of that by adding resistors. The bulbs are only 5 months old.

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Sonata I45 (LF 2015+) :: Slight Hesitation When Accelerate From A Stop

I have been experiencing a slight hesitation when I accelerate from a stop. It almost feels like its going to stall for a brief second then it picks up and accelerates normal until I'm at a complete stop again. I have the 2016 sport with the standard 2.4L. I currently have 2200 miles on it now and when I go in for my initial suggested oil change at 3000 miles ...

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Sonata I45 (LF 2015+) :: Transmission Has A Shutter Upon Downshifting

When coming to a quick stop the transmission has a shutter upon downshifting the shutters when you accelerate quick off of a stop light or stop sign. Also quick left hand turn hear a clunk coming from left side wheel. 2015 Sonata Sport 2.4L

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Sonata I45 (LF 2015+) :: Flare Ups Between Shifts In The Transmission

I leased my 2015 Sonata Turbo w/ Ultimate Package back in November. Experiencing flare ups between shifts in the transmission. Every once in a while, specifically when cold, I will get a slight hesitation and slip in between gears 2 and 3. It doesn't happen too often, so I'm not that concerned about it..just wanted to see if others have seen the same thing.

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Sonata I45 (LF 2015+) :: Transmission Pausing A Few Seconds Before Going Into Gear

Been noticing in my 2016 Sport that there seems to be a lot of "play" in the transmission. Don't really know a better word for it. When I reverse out of my garage and put the car in drive, the car rolls back a bit. Like it's pausing a few seconds before going into gear. Don't want to take it back to the dealer a look a fool because it's "normal".

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Sonata I45 (LF 2015+) :: Transmission Won't Go Into Any Gear When Stopped At Intersection

I recently inherited this car from a relative, I had it and two other vehicles she owned towed to my house about a week ago. The Sonata has under 1000 miles on it and I found a stack of repair orders from the dealer where she complained that the car wouldn't move or where it had been towed after getting stuck at an intersection while driving.

What is happening is that when I get in the car, with the engine cold, it starts up and drives fine. Then with no pattern or warning, when I stop at an intersection, the transmission acts as if its in neutral. It won't go into any gear, regardless of where I put the shifter. Its got the 2.4L GDI motor. and an automatic trans.

I had to tow it 5 times now. I took it to the local dealer and they found nothing wrong, no codes, and couldn't reproduce the problem. Yet when I went to pic it up, it did it a block from the dealer, I had to push the car to the shoulder at the light. I walked to the dealer, they had a tech come out to the car and by the time he got there the problem was gone. I took it home, and when I got home, I shut it off, then tried starting it and moving it again and nothing, it wouldn't move at all, no forward, no reverse. I find that if I cycle the key, on and off, sometimes the issue will go away instantly. I also never does it cold, only after driving it a bit. It has never done anything wrong while driving at speed, only when coming to a stop and trying to move again.

When it happens, the shifter moves fine, the engine revs and there are no warning lights on the dash, it just acts like its in neutral regardless of what gear the shifter is in. It doesn't creep or pull at all, there's no movement at all when it acts up and I have to drive it to get it to do it, it can idle in the driveway all day and won't do it till I take it down the road and come to a stop and try to start moving again.

Out of frustration I bought a scan tool to see what's up but as long as the scan tool is plugged in, it doesn't act up. I've been driving it for two days without it doing it. Thinking it may be just coincidence, I unplugged the scan tool, took a ride and it did it at the first intersection, I had to shut the car off, plug in the scanner to get the car back home. I called the dealer and was told that this was impossible.

I'm starting to feel like I'm on my own with this one since the dealer seems to not be able to find the issue. I am really having a hard time believing that the dealer can't make it act up but if they're plugging a scan tool in, and driving it, maybe that's why?

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Sonata I45 (LF 2015+) :: Automatic Transmission - Jerky Downshift From 3 To 2 And 2 To 1

So the problem is that I have a jerky downshift 3-2 and 2-1 that can be felt by everyone in the car (car pushes forward on downshift) until the car warms up. When the car is warm I can feel it slightly at times and feel a clunk when shifting down 3-2 and 2-1. On up-shifts at times the shifts are shaky from 1-2 and 2-3. I have brought this forward to my dealership as well as another one. They all performed software updates and reset the adaptive learning. However every time I got my vehicle back after this procedure I found the A/C was on full blast. So the initial drive by the tech after the reset was learning while the A/C was on. Would this be causing the weird shifting I experience while the A/C is off. I seem to notice a better shifting when the A/C is on but this may just be me trying to reason why my transmission is behaving this way. I drove other 2015 Sonata's and they have much better shifting than my car and no hard jerks on downshifts.

Both dealers have felt the downshifts and have come back and simply said "We've done all the updates and reset and learning. This may just be a normal characteristic of the car." I told them that a brand new vehicle in this day and age shouldn't be shifting poorly when compared to an older vehicle with 300,000 km (my old Honda Civic which are prone to transmission failures). They responded casually saying you can go and get a second opinion from another dealership if you like. I am furious with their responses and just left it at that. I need to know how to get this resolved and if this is indeed something I should expect from my Sonata.

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Sonata I45 (LF 2015+) :: Transmission Would Not Move Into Park When Turning Engine Off

I pulled into my garage yesterday and when I tried to move the transmission into Park it would not move. I tried turning the engine off and nothing would allow the transmission selector to move. I thought I would have to push something into the transmission lock slot but the only thing I had that was close to being able to fit into the small slot was the key in the FOB but it would not fit. By pure chance I happen to push on the transmission selector to the right and it moved over and then I was able to push it forward into Park. I must have pushed the selector into the sport mode when I entered the garage.

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Sonata I45 (YF - 2011+) :: Transmission Stopped Shifting Into 6th Gear At 70 Mph

This morning while driving on the freeway, the the transmission stopped shifting into 6th gear. This was at 70 mph. The only way it would shift up to 6th is by using the manual mode, however after manually shifting to 6th I moved the stick back over and it immediately downshifted to 5th at 70+ mph. Concerned, I pulled off and turned the engine off. After i restarted the engine, I continued to my destination and the trans shifted up to 6th on its own. The car has never done this.

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Sonata NF (2006-10) :: Transmission Knock When Shifting Into 2nd Gear

I noticed that recently my 2007 Sonata (108k Miles) is making a knocking sound when it shifts into second gear. It happens only when I back out of my garage and drive down the street and the car is cold. After that there is no more noise, and the transmission is shifting through the gears smoothly.

I recently replaced the transmission fluid, about 5k miles ago and I used the recommended type.

I read other postings with people having the same problem, and in those cases they pointed to the ABS self-check which occurs when you first start out. But this is definitely not my case as the noise is coincidental with shifting into 2nd gear and it only does it when the transmission is cold.

Could this be caused by the fluid temperature or maybe because the fluid has not had a chance to circulate through the transmission and fill all the cavities? Its rather strange thought that I just noticed it in the last month or so, if that were the case I should have had this problem before.

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Suburban :: 95 - Engine Shut Off Suddenly When Waiting On Signal Light

I was sitting at the light waiting for it to turn green and all of a sudden the engine shut of with all of the check engine lights come on, it stop fast and hard like someone just turned the ignition off. What can cause this? I turned the key to the off position and it started right up agin and has been no problem all week, but I am worried about driving it right now.

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Sonata I45 (LF 2015+) :: Cruise Control - Transmission Will Downshift To 4th Speed Whenever Go Downhill

The cruise control on my 2013 works as I expected.

However the cruise control on my 2016 Sonata does not.

When driving at highway speeds (65 to 70 mph) in cruise control and the shifter set on "D" (drive) the transmission will down shift to 4th speed whenever I go down hill.

This might be intentional as a way to keep the car from exceeding the set speed, but I have never heard of this and it would seem to place more wear an tear on the transmissions.

Do the down shifting is engineered in or if it is a service problem that I need to have addressed...

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Sonata I45 (YF - 2011+) :: Transmission Lurch / Shifting Hard Into Drive

So my car has recently begun having an issue shifting hard into drive after it warms up. It doesnt shift weird in any other gear or while driving. I had the trans temp sensor replaced last year under the tsb due to it shifting weird in all gears and a CEL. I was thinking either the fluid level or another bad sensor.

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Sonata I45 (LF 2015+) :: Torque Converter Locking Up So Early - Shuddering And Rattling Transmission

The problem is that it appears the torque converter is locking up so early even right after getting into second gear at speeds between 20km/h and 40km/h. This causes shuddering/rattling coming from under the hood. If I am not mistaken a torque converter should lock up at speeds 80km/h+. I've never seen this behavior on any car before. I'm not sure what kind of damage is being done either by all this shuddering and rattling going on with the transmission. I feel that this should be something that needs to be addressed via some software update. Is there any software update in regards to this issue?

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