how to fix a non-responsive infotainment touch screen in my Toyota Corolla E140 (2006-2013)

Solution

1. Preparation

• Gather necessary tools:
  • Screwdriver set
  • Trim removal tool
  • Multimeter
• Disconnect the negative battery terminal to ensure safety while working on the electrical system.

2. Inspect Fuses

• Locate the fuse box, typically found under the dashboard or in the engine compartment.
• Remove the cover and find the fuse labeled for the infotainment system.
• Use a multimeter to test for continuity; replace if blown.

3. Reset the Infotainment System

• Reconnect the battery terminal.
• Start the vehicle and allow the infotainment system to power up completely.
• Check if the touch screen becomes responsive after the reset.

4. Access the Infotainment Unit

• Use a trim removal tool to carefully pry off the dashboard trim surrounding the infotainment unit.
• Unscrew the bolts securing the infotainment unit and gently pull it out.

5. Inspect Wiring and Connectors

• Check the wiring harness connected to the infotainment unit for loose or damaged wires.
• Ensure that all connectors are firmly attached and free from corrosion.

6. Replace the Infotainment Unit (if necessary)

• If the system still does not respond, consider replacing the infotainment unit.
• Install the new unit by reversing the removal steps, ensuring all connections are secure.
• Reattach the dashboard trim.