Part number for the drain plug of the Toyota Corolla automatic transmission pan:
* 35138-21000 (until 2013)
* 35138-02040 (2014 and later)
Location of the automatic transmission pan drain plug:
The plug is located on the bottom of the automatic transmission pan, facing the ground.
Tools required for replacement:
* 8mm square or hex key
* Funnel
* Liquid collection tray
Replacement process:
1. Gather the necessary materials and tools.
2. Raise the car on a lift or place it on stands.
3. Place a collection pan under the automatic transmission drain hole.
4. Using an 8mm square or hex wrench, carefully loosen the drain plug.
5. Allow the automatic transmission fluid to drain into the collection pan.
6. Carefully tighten the drain plug to the specified torque (25 Nm).
7. Remove the vehicle from the lift or jack stands.
8. Check the automatic transmission fluid level and add if necessary.
Additional tips:
* Replace the drain plug and gasket at the same time.
* Use a new copper washer on the drain plug bolt.
* Tighten the drain plug using a torque wrench to avoid over-tightening it.
* After replacing the drain plug, test drive and check for leaks.