how to diagnose a transmission slipping issue in my Toyota Camry Seventh Generation (2012-2017)

Solution

1. Preparation

• Gather tools and ensure the vehicle is parked on a level surface.
• Disconnect the battery to prevent electrical shorts.
• Tools required: Socket set, torque wrench, OBD-II scanner, transmission fluid, funnel, and rags.

2. Check and Replace Transmission Fluid

• Remove the transmission dipstick and wipe it clean.
• Insert the dipstick back in, remove it again, and check the fluid level and condition.
• If low or burnt, proceed to drain the old fluid.
  • Locate the transmission pan and remove the bolts using a socket set.
  • Carefully lower the pan and allow old fluid to drain into a container.
• Replace the transmission filter if equipped.
  • Remove the old filter by loosening any retaining screws.
  • Install the new filter, ensuring it is seated properly.
• Reattach the pan with a new gasket, tightening bolts to the manufacturer’s specified torque.
• Refill the transmission with new fluid using a funnel.

3. Inspect and Replace Transmission Control Module (if necessary)

• Locate the TCM, usually found near the transmission or under the dashboard.
• Disconnect the electrical connector and remove any screws holding it in place.
• Replace with a new TCM, reconnect the electrical connector, and secure it properly.

4. Reconnect Battery and Test

• Reconnect the battery terminals.
• Start the vehicle and allow it to reach operating temperature.
• Test drive to ensure smooth shifting and verify that the slipping issue is resolved.