my Toyota Corolla E210 (2019-2024) transmission fluid is leaking, what to do

Solution

1. Preparation

• Tools Required: Socket set, wrench set, transmission fluid pump, OBD-II scanner, UV dye kit (if needed)
• Ensure the vehicle is parked on a flat surface and the engine is off.
• Disconnect the battery to avoid any electrical issues.

2. Identify the Source of the Leak

• Inspect the transmission pan for signs of cracks or rust.
• If the pan is damaged, proceed to replace it.
• Check all transmission cooler lines for leaks; replace any damaged or corroded lines.

3. Replace the Transmission Fluid

• Tools Required: Transmission fluid pump, funnel, gloves
• Remove the transmission pan by unscrewing the bolts with a socket set.
• Clean the pan and replace the gasket with a new one.
• Reinstall the pan and torque the bolts to the manufacturer’s specifications (typically around 8-10 ft-lbs).
• Use a funnel to refill new transmission fluid through the dipstick tube, using the recommended fluid type (Toyota ATF WS).
• Start the engine and let it warm up, then check the fluid level again and top off if necessary.

4. Test for Leaks

• Start the engine and allow it to idle; check for any signs of leakage around the pan and lines.
• Test drive the vehicle to ensure proper shifting and operation.