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internal88
internal88, Technician
Category: Transmissions
Satisfied Customers: 2489
Experience:  Over 10 years in the Import Auto industry. Engineering background and diagnostic is my specialty.
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2009 Hyundai Sonata transmission fluid is full and clean,

Customer Question

2009 Hyundai Sonata transmission fluid is full and clean, but transmission light stays on.
Submitted: 1 year ago.
Category: Transmissions
Expert:  internal88 replied 1 year ago.

Hello, I'm Brandon.

Have you scan the vehicle's computer for trouble code?

Expert:  internal88 replied 1 year ago.

Are you talking about the CVT light?

Customer: replied 1 year ago.
I have no means to scan the cars trouble codes Also I don. have the cars owners manual so I'm not sure what the light is called...it just says "transmission".
Customer: replied 1 year ago.
Did my message come across Brandon?
Expert:  internal88 replied 1 year ago.

I see.

Expert:  internal88 replied 1 year ago.

Are you near by an Autozone or Advance auto parts?

Expert:  internal88 replied 1 year ago.

They have generic scanner that can scan the code for you.

Customer: replied 1 year ago.
I called the local autozone and they said they had no way to scan iy.
Expert:  internal88 replied 1 year ago.

ok. How many miles does you car have?

Customer: replied 1 year ago.
75294
Expert:  internal88 replied 1 year ago.

When was the last time you have change the transmission fluid? Hyundai recommended to change the transmission fluid every 30k miles.

Expert:  internal88 replied 1 year ago.

30,000 miles

Customer: replied 1 year ago.
it might have been past time. what are a few of the thimgs it can be?
Expert:  internal88 replied 1 year ago.

Transmission shift sensor, indicator, module.

Expert:  internal88 replied 1 year ago.

Hyundai require to use NWS-9638 T-5 fluid.

Expert:  internal88 replied 1 year ago.

Do you have the 4 or the 6 cylinders?

Expert:  internal88 replied 1 year ago.

The proper way to find out is to hook up a factory computer.

Expert:  internal88 replied 1 year ago.

To see what is causing the light ON.