How do you refill the coolant in a BMW?

My BMW needs some more coolant, and I usually have this done at the mechanic when I get my car serviced, but there doesn’t seem to be anything else going on with my car. I don’t want to take the car in just to get more coolant. Is there a way I can top off the coolant myself?

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Answer provided by
Chloe Jenkins
Answered on May 02, 2022
Yes, you can fill up your car’s coolant on your own. To refill the coolant on your BMW, you will need to gather the following:
  • A new bottle of coolant based on your manual’s specifications
  • A funnel
  • A pair of gloves
Once you gather the materials, follow these steps to top off the coolant in your BMW:
  1. Open your hood and locate the coolant tank. Do not touch anything under the hood if you just turned your car off and it is hot.
  2. Turn the cap counterclockwise while pressing downward.
  3. Once the cap is open, you should see a brightly colored stick or level float. Somewhere on the coolant tank will be a diagram indicating the level float’s position if the tank is properly filled.
  4. Place the funnel in the tank but leave space to see the level float.
  5. Start pouring in your coolant until the float reaches the proper height as indicated by the diagram.
  6. Remove the funnel carefully and replace the cap.
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