My car went into shop for brake sensors that were "fixed". Now after having it in shop, car is not downshifting when slowing down and the PO756 diag is coming up.
View 6 Repliesi drained the 30000 mile fluid two weeks ago because it was harsh downshifting when coming to a stop... I was curious if others noticed a lot of metal sludge sticking to the magnetized drain plug???..
View 3 RepliesUpshifting is fine, downshifting gives me a big thud. Bigger from 3rd-2nd smaller 2nd-1st (I think).
2006 GS430. 120k or so miles.
Dealership replaced solenoid #2, but now say I need a whole new transmission.
We have a 2010 Tiguan SEL 4 motion automatic and today it just died after i pulled out of parking spot. the only light on the dash was the battery light. I restarted once i put it in neutral. When driving home my wife and i notice it was not downshifting when going down hill or when coming to a stop. This is not the usual behavior. It also seemed like it was costing in neutral when i was not in the throttle. I dropped it off at my usual dealer and hopefully they can duplicate it.
I am wondering if the battery or alternator is bad and the transmission computer was not getting good voltage and that made it act funny.
So on my way home today from work I came to a stop sign and noticed my car (2001 Hyundai Accent, 1.6L Automatic) didn't downshift while coming to the stop. So I stopped and hit the gas, and the car didn't move, it only revved. So I put it in park and it banged into park, then I put it in drive and it banged into drive. Then while driving, it will only shift when you let off the gas and like 5 seconds later after you let off the gas it shifts really really hard into third I believe. And in addition, there is no reverse now! I put it in reverse and nothing, even when I hit the gas it goes nowhere.
View 5 RepliesI picked up an '08 R32 about two months ago and was having issues with the DSG and the dealership determined it was an issue with the mechatronic unit so they swapped it. That made a huge difference, but the downshifting is still very hard when coming to a slow stop (to the point where the car jumps), especially from 2nd to 1st gear. About half the time when I back out of a parking spot, then put the car in drive and start to give it gas, the car doesn't move for a few seconds as the RPM's build, then it slams into gear.
This all happens in drive (D). I haven't even used the other modes to know if it's happening there too. The dealership says they don't see any issues with it and there are no error codes and that there is nothing wrong with the car, but this is by far the worst transmission I've ever had in any car I've ever owned. I find it hard to believe that VW and Audi would put this in their higher end cars, so I can only assume there is something wrong with mine.
I'm having in not being able to downshift manually. I can shift up with no problem. I have 116,000 miles on my Sonata that I purchased new 8 years ago. I had the (4 cylinder) tranny flushed about 18,000 miles ago. No other issues.
View 1 RepliesWhen approaching a red light, if I take my foot off the gas to coast, it feels as if the transmission 'downshifts' at around 30mph. I can't actually feel the transmission shifting but there is a definite slowdown in speed, not just a gradual slowdown. Is this normal? I ask as doing the same in the '04 RX it does not do this.
View 5 RepliesI've noticed that when I downshift into second gear, either going down a hill to augment braking, or setting up to take a corner quickly, I will occasionally hear two quick beeps (in the cabin) which are not very loud. This seems to happen when I'm using the paddles to downshift.
I assume that this is some sort of driver's aid, but for the life of me, I can't figure out what it's for.
2009 Hyundai Sonata automatic: When downshifting from 4th to 3rd it feels like I hit a bump, or like I just hit the brakes hard for a second.
What could it be? It's most noticeable when the car is cold. I have 82k miles on it, so it's still in the "power train warranty".
My daughter has a 2010 Sonata with a 4 cylinder and an automatic transmission. She is pretty frustrated with an intermittent problem. Every once in awhile, especially if the engine is cold, the car jerks while slowing down. She believes it is the transmission when it down shifts. I have driven the car and have not been able to duplicate the problem myself. The dealer recently changed the mapping for the transmission in hopes that would work but it hasn't. The dealer hasn't been able to duplicate the condition either.
View 52 RepliesHeard a clunk and then have the car feel like something from the inside is trying to stop it when using the paddle shifters in manual mode. Specifically when downshifting from 2 to 1. By the way I did a slight throttle blip, I have done this before with very smooth results but this time it really scared me, I though the transmission broke for a second; when the car did what it did.
View 6 RepliesI have a 2009 that seems to have issues in the lower gears, I think that I have a transmission issue.
When I'm coming to a stop, I feel the transmission downshifting from about gear 3. It's not wildly jerky or abrasive, but it's not smooth either (or I wouldn't feel it). When it downshifts, after it engages (or torques down for lack of a better term) it feels as if it releases a bit, which makes me have to compensate with harder braking (again, not saying I am slamming on the brakes, but I have to brake harder so it doesn't feel like I am now going to coast into the car in front of me). It doesn't feel like the transmission is going to take off on its own, but it definitely feels like it has a certain threshold it wants to stay above.
In the loaner I have (RX), when coming to a stop the best way I can describe it is it feels like the transmission has completely disengaged and I feel NO transmission downshifting at all. The only way I get this type of braking in my LS is if I throw it into Neutral and take the transmission out of the loop. On the way to the dealership this morning to drop it off for other issues, I was at a stop light and went to accelerate and it felt as if it skipped a gear because I was stalled for a second (acceleration wise, not that the engine turned off) before it took off as it should. Also my acceleration seems to be a little hesitant when starting off .
I have a 07 Ls460. When downshifting from second to first there is a click that is sometimes a clunk. Lexus has replaced the trans with no change. They have cleaned and lubricated rear suspension bolts and replaced the rear shocks and springs and the differential mount. Again, no change.
This started at about 80k and continues at 123k. They have checked motor mounts, transmission mount and repacked the driveshaft spline. When the car is lifted into the air and the weight is off the suspension the noise will go away for a few days.
This noise has also been heard occasionally when rolling off the gas between 20/30 mph and then reapplying throttle. Lexus mechanics and area reps are at a loss to diagnosis. I have driven a 2008 loaner and it had the same noise.
Have a 2008 Elantra GLS with 63K miles. A/T was serviced by dealer at 51K. Car now occasionally downshifts from 4th to 3rd when driving between 60 and 70 mph. Happens only when trans is hot (after 2-3 hours on hiway). When it occurs, it searches for the right gear, going back and forth from 3rd to 4th for several minutes before returning to normal. One thing odd is if I shut the car off for 5 minutes after it occurs, it runs fine afterwards. Do I need an ECU update or do I have a A/T problem?
View 11 RepliesI have an 09 Sonata that jerks when automatically down shifting just before coming to a stop or slowing to make sharp turn. Car has 130k miles and I've never changed transmission fluid. BTW...it's been a GREAT car!
View 7 RepliesI've been using my GX to haul the family about 500 miles round trip between our primary home and our lake house. I've done the trip about 5 times now, the route has many elevation changes (hills) and it keeps becoming more apparent that the GX is not downshifting when I would like it.
1) At first, I was stomping down on the gas pedal, entering the uphill stretches, to force a downshift, most of the time it needs to seek all the way to third before it gains enough torque to maintain fast highway speeds (70-80). However, this stomp method results in gunning the engine and then letting off the pedal, not exactly the smoothest process and hard to stay in the power band around 3rd and 4th gears.
2) I finally figured out how to push the shifter to the left and manually shift between the gears myself. However, I have found the downshift from 5 to 4 rarely happens in a timely manner. I shift it over to 4, the light goes out on D but takes a long time to light up on 4, and it stays in 5th gear. I have to downshift all the way to third to get a response out of it, which is immediate.
3) Once I started manually downshifting to 3rd it made a GIANT different in performance of the vehicle over hills. 3rd and 4th gear have plenty of power to move the vehicle along without stomping on the gas pedal and provides a much smoother ride.
Noticed the poor performance of the transmission shift program. I know the 05+ have slightly more power , but this doesn't strike me as a power issue, just that the truck isn't downshifting for optimal performance.
So I just purchased my new-to-me, CPO 2010 RX 350 two weeks ago. It had 81,750 miles when I purchased it, and it now has about 83,000 miles. I just came back from a weekend vacation, having driving about 500 miles total. This morning when I turned on the car, I noticed a message saying "Check AWD System," the check engine light was on, the general warning light was on, and the traction control light was on. As I was driving, I realized that the car wasn't downshifting properly. I didn't drive faster than 40 mph on my morning commute. When the car did downshift, it was a hard, jerky shift.
I did some reading on the forum, and many people suggested all the warning lights could be fixed by taking off and retightening the gas cap (due to the vehicle not reading the emissions properly or something?). I also read that topping off and overfilling the gas tank can be cause for the warning lights to go on. I did fill up once on my way home from my vacation, and haven't filled up since.
Anyways, I just now tried to adjust the gas cap and then restart the car, but the warning lights are still on. What I should do or if I should drive it a bit to let the emissions build up again? My problem is is that I live about 6 hours from a Lexus dealership, so I'm trying to figure out if I can resolve this on my own or what I should tell a mechanic specifically if I need to take it in.
I have a 2007 LS460 and one issue I have, which could be costly unless I'm paying attention, is the cruise control does not perform automatic downshifting like my Honda does. In fact, my speed can increase by about 10-15mph going downhill, which a couple of times I've been lucky to realize my speed is increasing and downshifted manually and sure enough there was a speed trap. I really don't like driving by luck, if you know what I mean.
Is there something that is causing this? I do not recall that it has ever worked correctly...
I am having this serious issue with my 2007 gs350 awd, whenever I'm on the highway or any were, the air is contaminated with any odor for example (skunk, garbage, smoke from old car) the smell comes in through the vents, I've changed the cabin air filter and still same problem, how to get it resolved?
View 4 Replies06 GS430 has started making this loud clicking noise when we start the car ... not all the time but very often ... it almost sounds like a jackhammer and is extremely loud. Goes on for a good 20-30 seconds then goes away.
The location sounds like it is coming from the glove box area but not really behind it, more below and behind it..