In this guide, you will find instructions on how to add brake fluid on 2004-2013 BMW 3-Series. Common symptoms that you need brake fluid include the brake warning light staying on in your BMW.
What you will need
Pull the hood release under the dashboard to release the hood.
Locate the brake fluid reservoir on your BMW 3-Series. Clean the brake fluid reservoir with clean cloth. The brake fluid reservoir is below the plastic cover on the driver's side. You will need to remove the plastic cover to access the reservoir.
Determine Low/Max level
Check brake fluid level on BMW 3-Series. Determine the current brake fluid level by looking at the maximum and minimum marks on the side of the reservoir.
Add the recommended brake fluid. Add brake fluid until the level is just below the MAX/Full mark. Do not fill the brake reservoir with brake fluid all the way to the top.
These instructions apply to 2004-2013 BMW 3-Series models such as 316i, 318i, 320i, 323i, 325xi, 328i, 330i, 335i, 320d, 325d, and M3.