why does my Toyota Corolla E170 (2013-2019) make a whining noise while driving?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and secure it with wheel chocks.
• Disconnect the negative battery terminal to ensure safety.

2. Check and Replace Power Steering Fluid

• Sub-steps:
  1. Locate the power steering reservoir and remove the cap.
  2. Check the fluid level with the dipstick; if low, add the recommended power steering fluid.
  3. If the fluid is contaminated, drain the old fluid and flush the system with new fluid.
  4. Refill to the proper level and replace the cap.
• Tools Required: Funnel, rags.

3. Inspect and Replace Serpentine Belt

• Sub-steps:
  1. Loosen the tensioner pulley using a socket and ratchet to relieve tension.
  2. Remove the serpentine belt from all pulleys.
  3. Inspect the belt for wear; if cracked or frayed, replace it with a new belt.
  4. Install the new belt following the routing diagram located on the engine bay.
  5. Reapply tension using the tensioner and ensure proper placement on all pulleys.
• Tools Required: Socket set, belt tensioner tool.

4. Inspect and Replace Alternator

• Sub-steps:
  1. Disconnect the battery if not already done.
  2. Remove the serpentine belt from the alternator.
  3. Disconnect the electrical connectors and mounting bolts from the alternator.
  4. Remove the old alternator and replace it with a new one, ensuring proper alignment.
  5. Reconnect the battery and reinstall the serpentine belt.
• Tools Required: Socket set, wrench set, multimeter (for testing).

5. Check Transmission Fluid

• Sub-steps:
  1. Locate the transmission dipstick and remove it.
  2. Check the fluid level and condition; if low or burnt, drain the transmission fluid.
  3. Replace with the manufacturer-recommended transmission fluid and ensure the proper level.
• Tools Required: Funnel, rags.