How to troubleshoot a potential transmission issue in the Kia Rio?

I have been experiencing some strange shifting behavior in my Kia Rio. The transmission seems to be struggling to shift from first gear to second gear. What could be causing this issue and how can I fix it?

It is possible that there is a problem with the transmission control module. I would recommend bringing your car to a certified mechanic for a diagnostic test to pinpoint the exact issue.

Another potential cause could be low transmission fluid. Check the fluid level and if it is low, add more fluid to the appropriate level. This may solve the shifting issues.

If the transmission fluid level is fine, it could be a clogged transmission filter. Have the transmission fluid and filter changed to see if that resolves the issue.