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How to Reset the Expired Brake Fluid Warning in BMW?

2 Answers

VonDeclan

07/25/25 1:12am

The steps to reset the expired brake fluid warning in BMW are: 1. Start the engine and press and hold the black button at the lower left corner of the instrument panel until the oil, brake pad, or brake fluid indicator appears; 2. When a triangle symbol appears in the middle, do not release the button; 3. Release the button when the brake fluid indicator appears; 4. Press and hold the button again, and when RESET or the reset prompt appears, release and press and hold once more to complete the reset. Brake fluid is the liquid medium that transmits braking pressure in the hydraulic braking system and is used in vehicles equipped with hydraulic braking systems. Taking the 2021 BMW 3 Series Facelift 320i Sport Package as an example, this car has a length, width, and height of 4719mm, 1827mm, and 1459mm respectively, with a wheelbase of 2851mm. It is a 4-door, 5-seater sedan with an 8-speed automatic transmission.

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Olivia

08/10/25 4:02pm

The BMW brake fluid warning indicates that the brake fluid replacement cycle has been reached, and the maintenance warning light needs to be reset to clear the alert. I've encountered this before, and the reset steps are actually quite simple. Insert the car key and turn it to the second position (where all dashboard lights come on, but don't start the engine). Then locate the BC button on the steering wheel or the iDrive controller, press and hold for a few seconds to enter the menu system. Use the directional keys to navigate to the Vehicle Information or Service option, select the Brake Fluid entry, and confirm the reset. The whole process takes no more than a minute. However, before resetting, make sure the brake fluid has indeed been replaced with new fluid, as expired brake fluid absorbs moisture, lowers the boiling point, and can cause spongy or ineffective braking—very dangerous! For newer models with touchscreens, it's even quicker with just a few taps. If unsure, check the owner's manual for specific instructions or post a video online to seek expert advice.

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