Funky Transmission

[Seattle Genesis]

Hello...

Is anyone having strange transmission issues? My Genesis 3.8 w/ Tech's transmission seems to shift extremely rapid from 1 - 2 - 3rd even before I get to 20 mph.. Im used to driving a big truck so this may just be getting used to the car.

 

[kaberle]

Hello...

Is anyone having strange transmission issues? My Genesis 3.8 w/ Tech's transmission seems to shift extremely rapid from 1 - 2 - 3rd even before I get to 20 mph.. Im used to driving a big truck so this may just be getting used to the car.

It is geared that way to save on fuel

 

[dataguy]

Yep, fuel economy shift program. Seems to shift at around 2000rpm under normal acceleration and hits 6th gear around 35mph.

 

[Seattle Genesis]

Thanks for the info.. Its been awhile since Ive driven a luxury car. This ones a keeper !!!

 

[ctrcbob]

The 3.8 has the Aisen Transmission. (the 4.6 has the ZF Transmission). I am not a fan of Aisen Transmissions, and this is one of the reasons I got the 4.6. My previous car had an Aisen (Aisen/Warner) transmission, and I hated it.

 

[jonah]

This is a feature of the tranny that I totally hate. It drives me crazy to constantly be bogged down in an RPM range where the engine only generates 10-20 horsepower. Of course you can stomp on the pedal and it will shift down vigorously, but that gets annoying. I wish dearly that I could "teach" it shift points that I want, changes that would cost less than 5% fuel economy, I'm sure.

Of course you can shift manually, and this can be fun, but the combination of the shifter being oriented the wrong way (down should be forward!) and the annoying bump when it goes to first at a complete stop take away from the experience.

Basically all of these problems, as well as most of the concerns voiced on this message board, could be fixed with SOFTWARE UPDATES. Why are these not forthcoming?!? Is anybody at Hyundai listening?

 

[jabrown6940]

Don't feel alone 3.8 owners. The 4.6 has hesitation problems too. Great gas mileage but I'd hate to get killed because of hesitation. In the country, OK, but I live in the city.

 

[BacktoHyundaibychoice]

A couple of things:

1. My 3.6 Passat exhibited the same lazy/slow shifting and was called a "feature" to improve MPG. So those that have posted that are correct.
2. One trick many of us used was to "untrain" the tranny by using the Tip/Shiftronic for a trip or 3. Things did improve, but only until the car relearned the driver.
3. For those complaining about the hesitation coming out of a rolling stop or slowdown, have you tried coming to a complete stop? There is no hesitation whatsoever if you let the car actually get into first. At a stop sign that should be a no brainer anyway, and if you're talking about a turn into traffic with a small window of opportunity I'd ask what's your hurry? And if the meatloaf really is getting cold, then use the manny in those cases

But then I'm an old guy. Your MMV.

 

[Seattle Genesis]

your post is too funny.. I like cold meatloaf sandwiches...lots of mayo please !

 

[Seattle Genesis]

Here's a new one...

I was pulling in the garage just now and my V6 Genesis was probably going form 2nd to 1st and it lunged forward very abruptly. Kinda startled me and had to apply the brake. Ive sensed some hesitation and quirkiness in the transmission yesterday and today. Im hoping its bad gas. I usually use premium but this tank is from el cheapo gas station around the corner.. I hope I dont have serious problems with this car. I like it too much to not like driving it.
Let me know if Im just paranoid

Seattle Genesis
Platinum V6 w/ Tech

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[TJPark01]

Here's a new one...

I was pulling in the garage just now and my V6 Genesis was probably going form 2nd to 1st and it lunged forward very abruptly. Kinda startled me and had to apply the brake. Ive sensed some hesitation and quirkiness in the transmission yesterday and today. Im hoping its bad gas. I usually use premium but this tank is from el cheapo gas station around the corner.. I hope I dont have serious problems with this car. I like it too much to not like driving it.
Let me know if Im just paranoid

Seattle Genesis
Platinum V6 w/ Tech

Yes you're being paranoid. This car doesn't need premium gas. You may squeeze some performance out of it at the top end, but it doesn't make sense unless you are on a race track.

 

[Seattle Genesis]

lol....

I really wasnt being paranoid about the gas. I was being paranoid about the transmission. The gas is the least of my problems if this is a true tranny issue.

Seattle Genesis

 

[Mixmaster Mikey]

I also own a 2005 V8 Volkswagon Touareg and there are 2 modes for shifting, as well as triptronic. There is a program called vagcom for Touaregs (maybe all VW's) that will let you adjust litterally everything in the computer. I think it is a dealer tool that has been adopted by people. Hopefully this will get a Hyundai version after a while, maybe with the Coupe sales and the Equuos in a few years there will be a demand.

 

[JamesD]

Fellas...you cannot change the basic shift profile of the transmission; that would be a violation of the emission certification for the vehicle. Even trannys that "learn" stay within a very tight set of parameters that are closely tied to the emissions profile of the powertrain. Also, some of its behavior is mechanical, not simply software, and is a result of the design of modern gearboxes, which generally keep the engine more tightly-connected to the wheels than they used to (for both fuel economy and emissions).

The surge one writer mentioned when entering his garage could be as simple as the air conditioner compressor engaging (and the engine controller goosing the throttle) just as it downshifted into first gear. Or, it may have already been in first, and at a slow crawl, the bump made the car jump forward a bit. None of these symptoms are problems with the tranny. I don't know much about the Aisin (had one of their manuals once), but that ZF 6HP is considered to be one of the better automatic transmissions in the world. The basic design has been used a LOT, and it is quite strong, with an excellent reputation.

Most automatic transmissions are designed to engage low gear as the vehicle rolls to a stop. This is to prevent the jerky operation that comes with the extraordinarily high numerical ratios a lot of them have in first gear; the vehicle can still move out in second gear if need be, as it, too, is relatively low. If the vehicle comes close to stopping, but does not quite stop, this jumpiness would be an expected behavior. Also, remember that your car is brand new, and the drivetrain doesn't have a lot of lash in it...you're going to feel everything.

 

[Seattle Genesis]

Thanks James..I'll see how it goes. Its just a bit wierd when I encounter these types of issues. Ive been driving an 8 cyl Dodge Truck for the past 10 years so all these issues may be normal.
Thanks,
Seattle Genesis

 

[LLT]

There is a TSB on transmission vibration/shuddering (TSB #09-AT-014) that involves a software calibration. There's also one regarding resetting the "adaptive values" for the TCM... it appears the dealer may need to reset the TCM and I'm not familiar with the Genesis enough to say, but usually disconnecting the battery for 10-15 minutes and reconnecting accomplishes the same thing. You then need to perform a relearn:

Accelerate from a stop at the specified TPS specification while the transmission shifts through all (1-2-3-4-5-6) gears and decelerate slowly to a stop. Stop for 5 seconds. Repeat 5 times or until normal gear transitions occur.

NOTE: Hold the accelerator pedal steady during the upshifts.

If additional adaptation is needed, perform the following additional procedures:
Perform several sequential downshifts (5-4, 4-3, 3-2 and 2-1) at small to moderate
throttle openings.
Perform several skip shifts (6-4, 5-3, 5-2, 3-1, etc.) at moderate to large throttle
openings.

With the vehicle stopped, move the shift lever from P to N to D and back, stopping
3~5 seconds in each gear. Repeat 5 times.

 

[bskinner]

I've noted that "shudder" for some time with my 4.6, at 8.5K and generally running very nicely. Hopefully, my dealer will know what to do when presented with my (up to now) vague notion regarding the transmission. Just show them the TSB - right? Thanks, not very good with this technical stuff.

 

[Seattle Genesis]

Thanks LLT.

I'm due in for my first scheduled service & oil change at 3000 miles so I will mention something to them and will post my experience and results.

Seattle Genesis

 

[Seattle Genesis]

LLT,

I actually got on the road last night and tried your suggestion of accelerating and de-accelerating and waiting 5 seconds. I never knew how may cops were on the road late at night just waiting for me to try this out. So I did this and it does seem like its shifting a bit smoother. I also think this may have been a bad tank of el cheapo gas that may have caused it to ride and shift rough. I loaded it up with premium last night so its a bit hard to tell which one fixed my funky transmission shifts.

But thanks to all on the board who responded. I love my new Genesis !!

Seattle Genesis

 

[sgermanos]

I just got back from the dealership. I have a Genesis 4.6. Here is the issue:
Driving around town averaging around 35 mph, the car shifts down when I take my foot off the gas to slow down, but the downshift is noticeable. Then it jerks a bit when I re-aply the gas, even if I re-aply very gently. If you are in traffic this gets quite annoying and the ride gets a bit jerky.

The service advisor at the dealership took it for a test drive and noticed the problem but was not sure if it was problem or a "feature". So we drove a demo car. They happened to have another 4.6 used by the finance manager. I test drove the car, and sure enough it has the same problem.
I also experienced the car lunging forward when you first start it and put it into drive. The engine also vibrrates a bit when you start from cold it. So with all these issues put together, I assumesd something was funky with my ECU.
Well, it turns out these behaviors are indeed features of the car and nothing is broken. The only way to fix it is wih a software update to the ECU. I hope Hyundai is working on this.

Sari