Just my first thought. I would think the transmission might be slipping. Another thought if it has been setting a while wonder if you have brakes or emergency brake sticking. If they were sticking all the time you would be able to smell them. Maybe just sticking and release when the car gets moving. I know if transmission fluid is low it will cause them to slip also.
https://www.youtube.com/watch?v=pCJhHPsojwY
I will say I have never had a kia and the vehicle I know of say the transmission oil should be at a certain temperature to check level under the car on sealed transmission..(because oil expands at higher temparature.) The way I have seen you have to add fluid under the car also. So Kia is somewhat different.
https://www.youtube.com/watch?v=YSW32LNK__0
Question edited for clarity.
Question moved to model category.
The year is needed, but here are some videos. If you mean 'how to get into' once you have removed it, break the paper seals and undo the screws, and remove the top.
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Oct 22, 2022 - To remove the dash to get to the radio from a 2005 Kia Optima, begin by prying around the edge of the trim around the gear shifter. Then, remove ..
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radio adapter harness by , Scosche
that name in japan means "little bit"
been there 10+ times, even into drydock. there,
that is there job to cure this and not need to wreck ANY factory harness with cutters.
This code does not refer to the O2 sensors. There is another sensor on the exhaust system called a "NOx" sensor. This monitors the Nitrogen Oxide levels in the Exhaust. Some vehicle manufacturers need to have the new sensor coded to the vehicles ECU to turn off the engine warning light.
It doesn't start because the immobiliser light is on and your vehicle is immobilised.
Did the battery go flat? Did you change the battery?
You need the dealership or an autoelectrician with a scan tool programming computer.
I have a 2015 kia sorento lx, I'm replacing the rear brake pads and I can't get the piston pushed in all the way in to get them on with the new brake pads
Back side of the engine there is a aluminum cover with 2 10mm bolts holding in place under the cover is the crank sensor held in by another 10mm bolt. Remove bolt and remove sensor connector is on a bracket near the thermostat housing