2. Remove the black cap from the power steering fluid reservoir. Be careful not to spill any fluid.
3. Check the current fluid level. It should be between the "MIN" and "MAX" marks indicated on the reservoir.
4. If the fluid level is low, you can add more power steering fluid. Use a funnel to pour the fluid into the reservoir slowly and carefully, avoiding any spills.
5. Check the fluid level again and make sure it is between the "MIN" and "MAX" marks.
6. Replace the cap securely and close the hood of your vehicle.
It's important to use the correct type of power steering fluid for your BMW 740i. The recommended fluid is usually specified in the vehicle's owner's manual. Mixing different types of fluids can cause problems with the power steering system. If you are not sure which type of fluid to use, consult with your BMW dealer or a qualified mechanic.