Changing Gear Box Oil on Toyota Yaris or Vitz Automatic 1999-2005

Summary

This video guide walks through the process of changing the transmission oil in a Toyota VVT-i engine, focusing on the steps required for an automatic gearbox. It covers draining the old oil, using a bit of fresh oil to clean the system, and filling the gearbox with the correct transmission fluid. The presenter emphasizes the importance of checking oil levels, both when the engine is cold and hot, to ensure proper performance. The procedure also highlights the need for caution when adding oil, with a preference for underfilling to allow easy adjustments.

Takeaways

• 😀 Ensure the car is leveled before draining the gearbox oil for complete drainage.
• 😀 Use a 14mm socket to open the drain plug and allow the oil to drain for several minutes.
• 😀 Adding a small amount (100-200ml) of new oil helps clean the gearbox and remove residue from old oil.
• 😀 Always use the correct transmission oil, typically marked as ATF DX, to refill the gearbox.
• 😀 The transmission oil should be a red color, ensuring it matches the car's specifications.
• 😀 Refilling the transmission oil requires about 1.5 liters, depending on the car's model.
• 😀 After refilling, use the dipstick to check the oil level and ensure it’s in the correct range.
• 😀 When the engine is cold, the oil level should be between the 'cold' markers on the dipstick.
• 😀 When the engine is hot, the oil level should be between the 'hot' markers on the dipstick.
• 😀 It’s better to add less oil initially and gradually top up, rather than overfilling the gearbox.
• 😀 Drive the car briefly after refilling to allow the oil to circulate, and then recheck the oil level.

Q & A

What is the first step in changing the transmission oil as shown in the video?

The first step is to remove the dipstick and blow air into it to allow the oil to drain properly from the transmission.

Why is air blown into the dipstick tube during the oil change process?

Blowing air into the dipstick tube helps ensure that the transmission oil drains more effectively.

What size socket is used to remove the bolt for draining the oil?

A 14mm socket is used to remove the bolt and drain the transmission oil.

What should be done to help the oil drain more efficiently?

The car should be leveled to allow more oil to drain, and the oil should be left to drain for a few minutes.

Why does the person in the video add a small amount of new oil during the draining process?

A small amount of new oil is added to clean out any residual old oil from the gearbox and ensure it is fully drained.

How much new oil is typically added for cleaning purposes?

Around 100 to 200 milliliters (or roughly a quarter of a liter) of new oil is added for cleaning purposes.

What is the importance of using the correct type of transmission oil?

Using the correct type of transmission oil ensures proper lubrication and function of the gearbox, as specified by the vehicle manufacturer.

What should be checked when filling the transmission with new oil?

It is important to check the level of the oil using the dipstick to ensure the correct amount is added, without overfilling.

Why does the person in the video prefer to put less oil initially?

The person prefers to add less oil initially because it is easier to top up later if necessary, while overfilling requires draining some out.

What is the correct oil level range when the engine is cold, according to the video?

When the engine is cold, the oil level should be between the 'cold' or 'cool' marks on the dipstick.