why does my Volvo XC60 Second Generation (2018-2024) have a high-pitched whine

Solution

1. Preparation

• Gather Tools: OBD-II scanner, mechanic's stethoscope, socket set, torque wrench, jack, jack stands, and fluid containers.
• Safety Precautions: Disconnect the negative battery terminal before starting any repairs. Ensure the vehicle is on a flat surface and securely lifted.

2. Replace Worn Accessory Belts

• Remove Engine Cover: If applicable, remove the engine cover using a socket set.
• Loosen Tensioner: Use a wrench to relieve tension on the serpentine belt tensioner and remove the belt.
• Inspect and Replace: Check for wear on the belt and replace it with a new OEM belt if necessary. Install the new belt following the proper routing diagram usually found on a sticker near the engine bay.
• Recheck Tension: Ensure the belt is correctly tensioned according to manufacturer specifications.

3. Address Transmission Issues

• Drain Transmission Fluid: Using a socket set, remove the transmission pan or drain plug to drain the old fluid into a container.
• Replace Filter: Replace the transmission filter if applicable. Clean the pan and replace the gasket.
• Refill Transmission Fluid: Refill with the correct type and amount of transmission fluid according to manufacturer specifications.
• Check Operation: Start the engine and move through the gears to ensure proper operation and check for noise.

4. Inspect and Replace Wheel Bearings (if necessary)

• Lift Vehicle: Use a jack to lift the vehicle securely and place jack stands beneath for safety.
• Remove Wheel: Use a socket set to remove the wheel from the affected side.
• Inspect Bearing: Spin the hub to feel for roughness or noise. If defective, replace the wheel bearing.
• Reassemble: Reinstall the wheel, lower the vehicle, and torque the wheel bolts to manufacturer specifications.