20 Most Recent 2004 Kia Optima Questions & Answers

To shift from Fahrenheit to Celsius on Your KIA Rio, press the OFF button and the AUTO button together for at least four seconds. Now, the display will change from Fahrenheit to Celsius or the other way around.
Also, if you disconnect the battery and let it breathe for a while before reconnecting, the display will go to the original form, i.e., Centigrade or Celsius.
To know more about your KIA RIO, please refer to this owner's manual https://www.manualslib.com/manual/740114/Kia-Rio.html?page=195

2004 Kia Optima | Answered on Apr 28, 2020

For the 2001 kia optima I have found the oil filter between the front passenger side tire and the engine. You can see it if you turn the wheels all the way to the left, although it helps if the filter cover is a bright color. To change it I had to remove the tire. I hope this helps.

2004 Kia Optima | Answered on Sep 03, 2018

hii I know this website that has very good manuals online, for lifetime. www.reliable-store.com they also have 24x7 live help chat.. can help you with this

2004 Kia Optima | Answered on Mar 12, 2018

I suggest you try one of those instant download manuals. My brother ( a mechanic) buys
it when he can't fix some technical issue He buys from www.reliable-store.com . A lot of mechanics actually do this. Website is very good for this. Must try it !!

2004 Kia Optima | Answered on Mar 11, 2018

Incorrect tension or incorrect belt.

2004 Kia Optima | Answered on Mar 05, 2018

I had purchased its manual from online store www.reliable-store.com. Here's the site link
I am sure they will help you

2004 Kia Optima | Answered on Mar 04, 2018

There are two switches on the brake pedal, one for brake light, and one that kicks out the cruise when you hit the brake. That switch is closed when depressed (ie; brake pedal is up) and opens when pedal is pushed away from the switch, (unlike the brake light switch which closes when the pedal is pushed). This means it must be positioned and adjusted correctly for cruise to work.

2004 Kia Optima | Answered on Mar 03, 2018

Could be the door unlock relay is bad . Has a Separate relay for locking the doors . You'll have to look in your fuse boxes for location .

2004 Kia Optima | Answered on Feb 04, 2018

If you put the following into Google it shows a number of items can be reset.

"2004 kia optima reset"

One site says the Optima doesn't have a fuel pump reset, but offers this on another site

It may be under hood above brake booster, has red button to reset, the 2004 kia spectra,s are located there so i can only assume that the optima would be there to.

There is also information on resetting the computer. This will clear the engine malfunction light. There is a section in my Tips if you click on my name on resetting the vehicle ant-theft system, which is the same thing as it is controlled by the ECM.

2004 kia optima computer reset Google Search

Having said all that, drain or correctly named 'parasitic draw', is from lights being left on in the hood or trunk, or some other electrical device shorting to earth. They are difficult to find and you need a good auto-electrician.

2004 Kia Optima | Answered on Jan 29, 2018

see if the cooling fan for the radiator is working could be a relay or fuse for cooling fan

2004 Kia Optima | Answered on Oct 27, 2017

if all things work then forget it is there . many previously owned vehicles have thing that when sold get cut off .

2004 Kia Optima | Answered on Oct 13, 2017

replace the front break lines....they rot internally.
had the same problem on my Taurus and Saturn Vue.
both had over 100.000 miles

2004 Kia Optima | Answered on Sep 29, 2017

best way to find where oil is coming from is to wash/degrease the engine and then run engine and look for leaks. driving the car will only blow it all over and make detection very hard.

2004 Kia Optima | Answered on Aug 16, 2017

could be a faulty sensor or the cabling for the sensor lead is damaged, it could also not even be that sensor was the problem but the wiring for the sensor. also check the connections on the ecu, you need to have the battery off for this and unplug the connector to the ec, look for any water damage, any white marks on the connection pins and clean off, if there has been water getting into the connection then you will need to replace the seal, while the connection is off you can also use a meter and find the wiring code for the ecu on line and find the conditions for the sensor, connect the meter to the correct wire on the plug on the ecu and other lead on tho the corresponding wire on the plug to the sensor this will help you find out if the connection is good and there is no damaged wires.

2004 Kia Optima | Answered on Aug 16, 2017

most of the time the clip breaks or pops off the linkage --remove door panel and look at the linkages

2004 Kia Optima | Answered on Aug 12, 2017

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