my Toyota Corolla E170 (2013-2019) has a hard time shifting what could be wrong

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Park the vehicle on a level surface and engage the parking brake.
• Disconnect the battery to prevent electrical shorts (if applicable).

2. Check and Replace Transmission Fluid

• Sub-steps:
  1. Remove the transmission dipstick (if applicable) and check fluid level.
  2. If fluid is low or dirty (burnt smell or dark color), drain the old fluid using a drain pan.
  3. Replace the transmission filter (if applicable) by removing the transmission pan.
  4. Reinstall the pan with new gasket, torque bolts to manufacturer specifications.
  5. Refill the transmission with the correct type and amount of fluid as specified in the owner's manual.

3. Inspect and Adjust Linkage

• Sub-steps:
  1. Locate the transmission linkage and visually inspect for any signs of damage.
  2. Adjust the linkage as per the service manual specifications to ensure proper alignment.
  3. Lubricate any moving parts if necessary.

4. Replace Transmission Range Sensor (if faulty)

• Sub-steps:
  1. Locate the transmission range sensor on the transmission.
  2. Disconnect the electrical connector and remove the mounting bolts.
  3. Install the new sensor, ensuring proper alignment and secure it with bolts.
  4. Reconnect the electrical connector.

5. Recheck All Components

• Sub-steps:
  1. Reinspect engine and transmission mounts for any signs of excessive wear or failure, and replace if necessary.
  2. Ensure all connections are secure and there are no leaks.