my Toyota RAV4 XA40 (2013-2018) doesn't shift smoothly, what's the issue?

Solution

1. Preparation

• Gather all necessary tools and parts.
• Park the vehicle on a level surface and engage the parking brake.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Check and Replace Transmission Fluid

• Tools Required: Transmission fluid pump, socket set, wrench set.
• Remove the transmission pan using a socket wrench.
• Drain the old transmission fluid into a container.
• Inspect the pan for metal shavings or debris; clean it thoroughly.
• Replace the transmission filter if applicable.
• Reinstall the pan with a new gasket and torque bolts to the manufacturer's specifications (typically 10-12 ft-lbs).
• Refill the transmission with the recommended type of fluid (typically Toyota ATF WS) using a fluid pump.

3. Inspect and Repair Shift Linkage

• Tools Required: Pliers, socket set, torque wrench.
• Visually inspect the shift linkage for any signs of wear, misalignment, or damage.
• Adjust the linkage as necessary or replace any damaged components.
• Torque the linkage fasteners to the manufacturer's specifications.

4. Test the Transmission Control Module

• Tools Required: OBD-II scanner.
• Reconnect the battery terminal.
• Use the OBD-II scanner to clear any transmission-related codes.
• Perform a road test to ensure the transmission shifts smoothly after the repairs.