my Toyota Corolla E210 (2019-2024) transmission jerks when shifting, what should I do?

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is on a flat surface and securely lifted if necessary.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Check and Replace Transmission Fluid

• Sub-steps:
  1. Locate the transmission dipstick and remove it.
  2. Check fluid level; add the recommended transmission fluid if low.
  3. If the fluid is burnt or contaminated, drain the old fluid and replace it.
  4. Refill with the manufacturer-recommended transmission fluid (check owner's manual for specifications).
• Tools Required: Transmission fluid pump, funnel, fluid catch pan.

3. Inspect and Replace Transmission Mounts

• Sub-steps:
  1. Visually inspect the transmission mounts for cracks or excessive wear.
  2. If damaged, remove the old mounts using a socket set.
  3. Install new mounts and torque to manufacturer specifications.
• Tools Required: Socket set, torque wrench.

4. Update Transmission Control Module Software

• Sub-steps:
  1. Connect the OBD-II scanner to the vehicle.
  2. Check for available software updates for the transmission control module.
  3. Follow the scanner prompts to update the TCM if needed.
• Tools Required: OBD-II scanner.

5. Adjust or Replace Linkage/Cables

• Sub-steps:
  1. Inspect the linkage and cables for wear or misalignment.
  2. Adjust the linkage according to the service manual specifications.
  3. If damaged, remove and replace with new cables or linkage components.
• Tools Required: Wrench set, screwdriver set.