Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

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6.0

fairly significant
Typical Repair Cost:
No data
Average Mileage:
60,774 miles
Total Complaints:
2 complaints

Most Common Solutions:

  1. not sure (2 reports)
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2009 Hyundai Sonata transmission problems

transmission problem

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2009 Hyundai Sonata Owner Comments

problem #2

Nov 122012

Sonata GLS

  • Automatic transmission
  • 64,000 miles

A D V E R T I S E M E N T S

Annoying that the transmission issue would only present itself on cold mornings and would be gone once the transmission was warm. Difficult to have the mechanic duplicate the issue without leaving the car overnight.

- , Ogden, UT, USA

problem #1

Jul 112011

Sonata GLS 2.4L 4 cyl

  • Automatic transmission
  • 57,547 miles

Have had the 09 Sonata for just over a year, bought it pre-owned with approx 35k miles on it. A couple hundred miles ago it started having a rough times shifting. It's an automatic, I've been driving this car for a year, i know how it normally acts. When accelerating it will get into the 'red-zone' before it shifts up. And this is at normal level of usage. It's not being accelerated in a manor that would necessitate this. It does this for each time it shifts until you're into fifth gear, and then it hesitates when slowing down, the RPMS will drop below 500 before it'll down shift. I have recently had to use the shiftronic override to get it to shift as it should.

Thankfully it's under warranty, but this is really very rough and unsafe to drive. It's at the local dealership, however I feel as if I'm going to be dicked around. Being how they have a D rating with the BBB and the guy said he's never heard something like this. Thankfully I can take the diagnostics test to another dealership if it's not fixed. I'm really worried that this investment may not have been a wise-one, and am strongly considering not purchasing another Hyundai even though I would consider myself a loyal Hyundai owner, since my first and 2nd vehicles have both been Hyundai's.

- , St Louis, MO, USA

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