my Toyota RAV4 Fifth Generation (2019-present) struggles to start in cold weather why

Solution

1. Preparation

• Gather tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Battery Inspection and Replacement

• Sub-steps:
  • Remove the battery cover (if applicable) to access the battery.
  • Clean any corrosion from the battery terminals using a wire brush and a mixture of baking soda and water.
  • Tighten any loose connections.
  • If the battery voltage is below 12.4 volts, consider replacing it.
  • Remove the old battery and install the new battery, ensuring proper orientation.
  • Reconnect the negative battery terminal.

3. Oil Change (if necessary)

• Sub-steps:
  • Check the owner’s manual for the correct oil viscosity for cold weather.
  • Drain the old oil using an oil pan and replace it with the recommended oil.
  • Replace the oil filter using an oil filter wrench.
  • Start the engine and check for leaks.

4. Fuel System Check

• Sub-steps:
  • Inspect the fuel pump by listening for a humming noise when the ignition is turned on (but not cranked).
  • If the pump is not operational, replace it.
  • Remove and clean the fuel injectors with a fuel injector cleaner.

5. Starter Motor Test

• Sub-steps:
  • Disconnect the starter motor’s electrical connections.
  • Test the starter motor with a multimeter to ensure it operates within specifications.
  • If faulty, replace the starter motor.