my Toyota Camry won't start and the dashboard lights are flickering what's wrong

Solution

1. Preparation

• Gather tools: multimeter, socket set, screwdriver, OBD-II scanner.
• Ensure the vehicle is in a safe area, and the ignition is off.
• Disconnect the battery before proceeding with electrical work.

2. Battery Check and Replacement

• Check battery voltage:

  • Connect the multimeter leads to the battery terminals (red to positive, black to negative).
  • If the voltage is below 12.4 volts, proceed to jump-start the vehicle or replace the battery if it holds no charge.

• Replace battery (if necessary):

  1. Remove negative terminal first, then positive terminal.
  2. Unscrew the battery hold-down clamp and lift out the old battery.
  3. Place the new battery in position, secure it with the hold-down clamp.
  4. Connect the positive terminal first, then the negative terminal.
  5. Ensure all connections are tight and free from corrosion.

3. Inspect and Clean Battery Terminals

• Clean terminals:
  1. If corrosion is present, mix baking soda and water to create a cleaning solution.
  2. Apply the solution to the terminals and scrub with a wire brush.
  3. Rinse with water and dry completely before reattaching.

4. Test and Replace Ignition Switch (if necessary)

• Check the ignition switch:
  1. Remove the steering column cover using a screwdriver.
  2. Disconnect the ignition switch connector.
  3. Use a multimeter to check for continuity in the switch when turned.
  4. If faulty, replace with a new ignition switch, following the manufacturer's instructions.

5. Starter Motor Inspection

• Examine the starter motor:
  1. Locate the starter motor (usually near the engine block).
  2. Check for loose connections and corrosion.
  3. If necessary, replace the starter motor by removing it from its mounting bolts and disconnecting the wiring.