my Toyota RAV4 XA40 (2013-2018) has trouble starting in cold weather

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the battery terminals, starting with the negative terminal.

2. Battery Inspection and Replacement

• Sub-steps:
  1. Remove the battery from the vehicle by unscrewing the battery hold-down clamp.
  2. Clean the battery terminals with a wire brush to remove corrosion.
  3. Test the battery with a multimeter; if the voltage is below 12.4V, consider replacing it.
  4. If replacing, install a new battery, ensuring it is rated for cold cranking amps (CCA) suitable for cold weather.
  5. Reconnect the battery terminals, starting with the positive terminal, and secure the hold-down clamp.

3. Starter Motor Inspection

• Sub-steps:
  1. Remove the starter motor from the engine bay by detaching the electrical connections and bolts.
  2. Test the starter motor using a bench test to ensure it engages properly.
  3. If faulty, replace the starter motor with a new or refurbished unit.
  4. Reinstall the starter motor and reconnect all electrical connections securely.

4. Engine Oil Check

• Sub-steps:
  1. Check the engine oil level using the dipstick.
  2. Verify that the oil is the correct viscosity for cold weather (typically 0W-20 or 5W-30).
  3. If the oil is too thick for cold temperatures, perform an oil change with the appropriate viscosity oil.
  4. Dispose of the old oil properly and ensure the oil filter is also replaced.