1. Park your Jetta on a level surface.
2. Turn the engine on and let it run for a few minutes to warm up the ATF.
3. Then turn off the engine.
4. Open the hood of the car to locate the ATF dipstick. It's usually marked with a red or orange handle.
5. Pull the dipstick out and wipe it clean with a rag.
6. Reinsert the dipstick into the transmission fluid tube until it's seated properly.
7. Pull it out again and check the fluid level.
8. The ATF level should be between the two marks on the dipstick. If it's low, you need to add some.
Here's how to add ATF to a 1989 VW Jetta:
1. Locate the ATF fill plug on the transmission. It's usually on the side of the transmission, near the top.
2. Remove the fill plug.
3. Insert a funnel into the fill hole.
4. Add enough ATF to bring the fluid level up to the "Full" mark on the dipstick.
5. Replace the fill plug.
It's important to use the correct type of ATF for your 1989 VW Jetta. The owner's manual will specify the correct type of ATF.
