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Where is the automatic transmission relay control located

Tiny
JZIELINSKI
  • MEMBER
  • 2003 KIA OPTIMA
  • 106,000 MILES
Auto Zone diagnosed my check engine light as having an A/T Relay Control Issue. I have ordered the part from Kia, is this an easy at home repair? A/T remains in 3rd gear (fail safe) I know from reading and researching. I do not know where the relay control is located, although I have been told it's under the dash at the end of the heater box? Is this correct?
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Tuesday, November 29th, 2011 AT 4:57 PM

5 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,883 POSTS
Hello,

Yes this relay is easy to replace and test, here is a guide to show you how to test the relay which is located in the middle of the dash near the bellhousing hump.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

I would check the system fuses as well.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Here are some fuse panel and relay locations (below)

Please let us know if you need anything else to get the problem fixed.

Cheers, Ken
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Monday, November 20th, 2017 AT 11:25 AM
Tiny
2CP-ARCHIVES
  • MEMBER
  • 4,542 POSTS
  • 2002 KIA OPTIMA
Relay - Electronic Aut Transmission how to replace and the location and the location please
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Monday, November 20th, 2017 AT 11:25 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
There is no relay for this system

Roy
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Monday, November 20th, 2017 AT 11:25 AM (Merged)
Tiny
JRCRAWLEY
  • MEMBER
  • 1 POST
Car will only take 3rd gear and only 40 mph and that is what it shows. Any other options?
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Monday, November 20th, 2017 AT 11:25 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Have the system scanned for codes for internal trans repairs needed.

Roy
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Monday, November 20th, 2017 AT 11:25 AM (Merged)

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