- 1). Locate the thermostatic valve if the Tundra uses a trailer towing package and lock it open. The valve is positioned on the right side of the transmission. Press the shaft of the valve in with a screwdriver. Lock the valve open by inserting a 1.5 millimeter pin into the visible hole on one side of the valve, and pressing it through until the pin protrudes on the other side. Locking the shaft open will ensure an accurate fluid level adjustment. If a trailer towing package is not available, skip this step.
- 2). Depress the parking brake. Press and hold the driving brake down, then start the engine. Continue to hold down the parking brake and shift the transmission through all available gears. Pause for one to two seconds at each position before moving to the next. Cycling the shifter through all gears will distribute the transmission fluid throughout the transmission.
- 3). Continue to run the engine at idle to warm the transmission fluid to its optimum level check temperature. The range for checking the fluid level is within the range of 115 to 133 degrees Fahrenheit. Once at optimum temperature, check the fluid level.
- 4). Locate the overfill plug at the bottom of the transmission. The overfill plug is in what would normally be considered the drain plug. However, on the 2009 Tundra, the bottom plug is connected to an overfill tube and protrudes up and into the pan. Therefore, when the plug is removed, only excess fluid flows from this port.
- 5). Place a catch-pan beneath the overfill plug. Remove the plug and allow any excess fluid to flow into the pan. If no fluid flows into the pan, pour transmission fluid into the refill port with the refill plug removed. Continue to fill with Toyota WS transmission fluid until it begins to flow from the overflow port. When fluid drains from the overfill, the proper fluid level is set.
- 6). Reinstall the refill plug and the overfill plug into the transmission. Remove the catch-pan from underneath the truck and kill the engine.
SHARE
