Park your vehicle on a level surface and engage the parking brake.
Locate the transmission fluid dipstick, which is usually near the back of the engine bay near the transmission. It is typically marked with a red or orange handle.
Pull the dipstick up and wipe it clean using a rag or paper towel. Reinsert the dipstick until it is fully seated.
Pull the dipstick up again and inspect the fluid level. The fluid should be between the "Full" and "Add" marks on the dipstick.
If the fluid level is low, you will need to add transmission fluid. Use a funnel to add fluid to the transmission fluid dipstick tube.
Check the fluid level again after adding fluid, and continue adding fluid until it reaches the "Full" mark on the dipstick.
Reinsert the dipstick and close the fluid cap.
Start the engine and allow it to run for a few minutes.
Check the transmission fluid level again while the engine is running. The fluid level should still be at the "Full" mark.
Note: Always use the transmission fluid type that is recommended in your vehicle's owner's manual.
