04 Sonata trans, again

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me

Just wondering if anyone else has had this problem. My 04 V6 GLS Sonata likes to downshift from 3rd gear right into 1st, completely bypassing 2nd. No a big problem if I am coming to a complete stop, but if I slow down to 1 or 2 MPH then accelerate, I'm in 3rd. Really sucks if I'm heading up a hill.

I wasn't sure what was really going on, so I tried it in manual Shiftronic (or whatever it's called) Sure enough you can watch it downshift, from 4th, to 3rd to 1st. About 5% of the time it will go into 2nd.

This tranny has ben nothing but problems since getting the car new in Oct 03. No major problems, but enough to wish I stayed clear of Hyundai. The service dept (I think they were hired straight from McDonalds) more or less tells me that's the way it's supposed to shift
 
There is a TSB out for re-programming the shift patterns/adaptive learning function of this transmission----

I had it applied to my '04 Sonata GLS V6 2.7L and that cleared up all these shifting problems for me--

TSB # 04-40-006-1

Take the car in and ask that this TSB number be applied to the TCM. It is free of charge.

Hope this helps--
 
Just wondering if anyone else has had this problem. My 04 V6 GLS Sonata likes to downshift from 3rd gear right into 1st, completely bypassing 2nd. No a big problem if I am coming to a complete stop, but if I slow down to 1 or 2 MPH then accelerate, I'm in 3rd. Really sucks if I'm heading up a hill.

I wasn't sure what was really going on, so I tried it in manual Shiftronic (or whatever it's called) Sure enough you can watch it downshift, from 4th, to 3rd to 1st. About 5% of the time it will go into 2nd.

This tranny has ben nothing but problems since getting the car new in Oct 03. No major problems, but enough to wish I stayed clear of Hyundai. The service dept (I think they were hired straight from McDonalds) more or less tells me that's the way it's supposed to shift
Click to expand...

My 03 has been doing the same thing since I got that software update a while back. It's irritating as hell.
 
There is a TSB out for re-programming the shift patterns/adaptive learning function of this transmission----

I had it applied to my '04 Sonata GLS V6 2.7L and that cleared up all these shifting problems for me--

TSB # 04-40-006-1

Take the car in and ask that this TSB number be applied to the TCM. It is free of charge.

Hope this helps--
Click to expand...

Ooo... That'sa new one. I'll have to go get that applied. I'm due for an oil change anyway.
 
There's nothing there that sounds terribly abnormal. The trans will tend not to downshift unless you're putting the engine under load. If you slow down enough, it may choose first gear. If you have no trouble codes, then most likely the dealer is correct.

The reprogram cited does not apply to your vehicle. That programming is already in the trans computer in 04 models. The reprogramming only applies to 02 & 03 models which had different original programming. This reprogram was to solve a 2-3 shift flare.
 
Sorry, you're right hyundaitech---

TSB 04-40-006 was superceded (with the -01 designation at the end) to NOT include the 2004 model year. The original one (without the -01) included my production date. Hmmmmmm, I had it applied to my car and it improved my shift quality, flare and delayed 2-3 upshift when the engine is cold.

What gives here?
 
I suppose it's possible it could have some unwanted effect on the 04's. Most likely, on attempting to reprogram, the scan tool simply says "already reprogrammed" or "ECM is a different type." The bulletin specifically says the bulletin was superseded to change the vehicles affected. I won't be able to get any further info than that from Hyundai
-- they guard it closely.
 
Yeah, that's why I traded my LEMON Chevy Venture in, a higher quality vehicle? Haven't you ever heard of the Piston Slap that GM says is "normal". Check out www.pistonslap.com and see how high GM's quality is. So much for the higher quality in North American vehicles.
 
Let us be honest! Lets not even rate GM highter than Hyundai. Hyundai is anyday better than GM in terms of quality and the best part is the warranty. GM cannot even dream of giving such warranty. You get to hear all kinds of problems from the GM cars. Engine,Xmission,axle .. common! how can it die within warranty period! That shows how much they apply onto the manufacturing.. Hyundai is bang for the buck!
 
That's what I mean, GM is woefully behind the times with customer satisfaction. I will never again but a vehicle from them. Their engineering stinks!
 
Even though my Sonata was sold as an '04, it was built Aug 12, 03, and I remember reading somewhere that this tranny (along with many other parts I would bet) is considered '03.

As far as the shifting, it is not normal. Slow down to about 1 MPH and then accelerate, and still be in 3rd gear? Far from normal
 
On Sat, 02 Oct 2004 10:53:44 -0400, Jason

Even though I have the '04 model, I believe I have the same tranny as your '03. My production date was Aug 2003, and yes, it is very irritating
 
Yeah, that's why I traded my LEMON Chevy Venture in, a higher quality vehicle? Haven't you ever heard of the Piston Slap that GM says is "normal". Check out www.pistonslap.com and see how high GM's quality is. So much for the higher quality in North American vehicles.
Click to expand...
Same with my Saturn. Pure junk.

J.W.
 
Staying in third gear on acceleration from 1MPH is not normal, I agree, but I was under the impression that the original poster did not like the fact that it shifted directly from 3rd to 1st, which is normal.
 
Yes, I believe the transmission is the same from 1999 to 2005. The transmission computers in the 2004 MODEL YEAR vehicles should already be programmed to include this update.
 
But if it does shift from 3rd to 1st, and you don't come to a complete stop, you will be accelerating while in 3rd gear, even if going 1 mph. I have to com to a COMPLETE stop before it will downshift into 3rd gear
 

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