2003 Sonata 2-3 up shift problem

  • Thread starter Thread starter Robert John
  • Start date Start date
Last Thursday I was able to get my car in to have the transaxle software
update as suggested by the online hyundaitech. It appears this reprogramming
has fixed the delayed 2-3 up shift problem. Call your dealer and have it
done.
Bob
Click to expand...

I had the TSB applied to my Sonata last week. I'm not sure I like the
results. The shift time has decreased dramatically. That is great.
The tranny used to take around a second to shift when above 3500 RPM.
The lagging 2-3 upshift problem has gotten worse. I also seem to have
developed a 3-4 upshift lag. This might be the transmission
relearning but it has been almost 600 miles since the TSB was applied.
My car learned a lot faster after I bought it (and reset the ECM). In
addition, when in Shiftronic mode my car no longer automatically
downshifts at 1000 RPM, it now waits until 700 RPM. It doesn't
downshift from 3rd to 2nd either, it jumps straight down to 1st. This
is a little annoying because there is no power in 3rd gear at 15 mph.
 
I called my dealer and made an appointment. He said he never heard anything
about it. But however he did tell me it's going to cost me 300.00 to correct
the problem. How much did you guys get charged?
 
No charge. I had been complaining of this shift problem since the vehicle
was new and recently informed the dealer I was ready to seek arbitration. I
feel Hyundai should have an automatic recall for all 2002-2003 Sonata to
upgrade transaxle software. I'm sure they will reprogram to keep a happy
customer.
Bob
 
I called my dealer and made an appointment. He said he never heard anything
about it. But however he did tell me it's going to cost me 300.00 to correct
the problem. How much did you guys get charged?
Click to expand...

Nothing, they did it under warranty.
 
No charge. I had been complaining of this shift problem since the vehicle
was new and recently informed the dealer I was ready to seek arbitration. I
feel Hyundai should have an automatic recall for all 2002-2003 Sonata to
upgrade transaxle software. I'm sure they will reprogram to keep a happy
customer.
Bob
Click to expand...

Don't forget to add the '04 model Sonata's to the list. Bought my '04
in Nov '03. It better be an '04!
 
I had the TSB applied to my Sonata last week. I'm not sure I like the
results. The shift time has decreased dramatically. That is great.
The tranny used to take around a second to shift when above 3500 RPM.
The lagging 2-3 upshift problem has gotten worse. I also seem to have
developed a 3-4 upshift lag. This might be the transmission
relearning but it has been almost 600 miles since the TSB was applied.
My car learned a lot faster after I bought it (and reset the ECM). In
addition, when in Shiftronic mode my car no longer automatically
downshifts at 1000 RPM, it now waits until 700 RPM. It doesn't
downshift from 3rd to 2nd either, it jumps straight down to 1st. This
is a little annoying because there is no power in 3rd gear at 15 mph.
Click to expand...

I'd just like to post up here again to let you guys know that the 2-3
and 3-4 upshift lag has, for the most part, finally gone away. It
only took 1000 miles...

My car still skips 2nd gear on the way down though unless I decelerate
slowly.
 
FerdyPooh said:
Thought I'd throw in a comment here also---

I have a 2004 Sonata GLS which has performed flawlessly since
delivery---except for the "peculiarity" that you have experienced.

My Sonata has the delayed 2-3 upshift occurrence also; it's only from cold
starts and disappears after the first 1/2 to 1 mile of driving, or at the
point of the first 2-3 upshift, whichever comes first. It then behaves
normally. As a side note, my car was delivered to me from the dealer 1/2 to
3/4 of a quart low on transmission fluid----after adding the proper Hyundai
SP-III fluid to the tranny, the occurrence seemed to become better (by that,
I mean that RPM's did not get as high and the "flare" not as severe before
the upshift occurred).
Click to expand...

Transmission shift flare refers to engine RPM shooting up momentarily
with a sensation of the tranny in NEUTRAL. Delayed shifting is
something else. It's normal when the engine is cold.
My personal feelings are that this is normal for Hyundai automatics, as I
traded a 2002 Elantra GLS for this car, and the Elantra had the same
anomaly. However, the referenced TSB's in this thread do not seem to apply
to '04 models (correct me if wrong).
Click to expand...

What is the manufacture date of your car?
 
My '04 Sonata GLS has shifted like this from day 1, but my local
dealer(Wright Hyundai) says there is nothing wrong. I will be VERY
surprised if my engine makes it past 40,000 miles or so (currently
about 8,000) because of the high rpms it produces in 2nd gear


On level ground, it's not to bad, but if I start up a hill and I'm in
1st or 2nd, I can reach speeds of 60mph with the tach over 5 and it
Click to expand...

Try this. Pull the TCM fuse off the fuse panel and put it back after
about a minute.
 
"FerdyPooh" <fredjr1@bellsouth.net> wrote in message

Transmission shift flare refers to engine RPM shooting up momentarily
with a sensation of the tranny in NEUTRAL. Delayed shifting is
something else. It's normal when the engine is cold.


What is the manufacture date of your car?
Click to expand...

August 16, 2003
 
I'd just like to post up here again to let you guys know that the 2-3
and 3-4 upshift lag has, for the most part, finally gone away. It
only took 1000 miles...

My car still skips 2nd gear on the way down though unless I decelerate
slowly.
Click to expand...

Just turned 9000 on my '04 and still no change in shift pattern. I'm
going to have to go back to the dealer again I guess. BTW, my '04 has
a manufacture date of Aug 12, 2003
 
My 2oo2 Elantra does the same thing.From new. Software update and all. My
dealer says the same thing. "this is normal". We all know a car shouldn't
work like this, so the BIG question is, what else does Hyundai consider
"normal"
 
I would think these high RPM's can't be good for the engine, so I'm
making sure to get regular oil changes and keep all my records. I
think I'll be getting an engine replacement before my 100,000 miles
are up. I like the car, but sure wish I had selected something other
than a Hyundai
 
I would think these high RPM's can't be good for the engine, so I'm
making sure to get regular oil changes and keep all my records. I
think I'll be getting an engine replacement before my 100,000 miles
are up. I like the car, but sure wish I had selected something other
than a Hyundai
Click to expand...

DOHC engines are made to rev high (unlike pushrod engines). It's not
taking much, if any, life out of the engine, it's just killing your
gas mileage.
 
DOHC engines are made to rev high (unlike pushrod engines). It's not
taking much, if any, life out of the engine, it's just killing your
gas mileage.
Click to expand...

That it is doing. I still am unable to over about 17.5 MPG (Except on
the highway, where I can get about 23-25
 
That it is doing. I still am unable to over about 17.5 MPG (Except on
the highway, where I can get about 23-25
Click to expand...

That's pretty bad. Mine is usually between 19-20. If I drive a long
trip on the highway I can get 24-25.
 


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