1. Loose wheel lug nuts: Check to ensure that the lug nuts on the left front wheel are properly tightened. Loose lug nuts can cause the wheel to move and make a knocking noise when turning.
2. Worn or damaged wheel bearing: A worn or damaged wheel bearing can cause a knocking noise when turning. The wheel bearing is responsible for allowing the wheel to rotate smoothly, and if it is worn or damaged, it can cause the wheel to wobble and make a knocking noise.
3. Damaged or loose suspension components: Check the suspension components, such as the control arms, ball joints, and tie rods, for any signs of damage or looseness. If any of these components are damaged or loose, it can cause the wheel to move and make a knocking noise when turning.
4. CV joint: The CV (constant velocity) joint is a part of the drivetrain that allows the wheel to turn at different angles. If the CV joint is worn or damaged, it can cause a knocking noise when turning.
5. Brake caliper: Check the brake caliper on the left front wheel to ensure that it is properly secured. If the brake caliper is loose, it can cause the brake pads to move and make a knocking noise when turning.
If you are not familiar with automotive repair, it is recommended to take your vehicle to a qualified mechanic for diagnosis and repair.
