What You'll Need:
- Owner's manual or a reliable service guide for your vehicle.
- A clean rag or paper towel.
- A flashlight.
Here are the steps on how to check your transmission fluid:
1. Park your car on level ground and turn off the engine. Allow it to cool down for a few minutes if it has been running recently.
2. Open the hood of your car and locate the transmission fluid dipstick. In your 2005 BMW 645CI, it's typically a bright or yellow-colored dipstick with a cap labeled "ATF" (Automatic Transmission Fluid). It should be near the back of the engine bay, towards the front of the car.
3. Pull out the dipstick and wipe it clean using a clean rag or paper towel.
4. Reinsert the dipstick fully back into its tube. Make sure to push it in as far as it will go.
5. Pull out the dipstick again and examine the fluid level. There should be two marks on the dipstick indicating the "ADD" and "FULL" levels.
6. The fluid level should be between the "ADD" and "FULL" marks. If the fluid level is below the "ADD" mark, you will need to add some transmission fluid. Refer to your owner's manual for the recommended type and amount of fluid to add.
7. If necessary, add the appropriate amount of transmission fluid through the dipstick tube using a funnel.
8. Reinsert the dipstick once the fluid level is at the correct level.
9. Start your car and let it run for a few minutes. Shift through the gears (P-R-N-D-3-2-1) with your foot on the brake.
10. Check the transmission fluid level again following steps 3-6 to ensure it is still at the correct level.
Remember, these instructions are specific to the 2005 BMW 645CI but may vary for different BMW models and years. Always refer to your owner's manual for the most accurate information related to your vehicle. If you have any concerns or find it challenging to check the transmission fluid, it's best to consult a professional mechanic.
