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This guide provides step-by-step instructions on how to check the brake fluid level on an Audi vehicle. 

Table of Contents


What you will need

  • OEM Audi Brake Fluid 
    • Only use the brake fluid type that is printed on top of your particular brake fluid reservoir. The recommended brake fluid type is also listed in your owner's manual. 


  1. Pull the hood release under the dashboard of your Audi. Open the hood and secure it in the open position.

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  2. Locate the brake fluid reservoir in the engine bay near the wiper arm on the driver's brake fluid reservoirOn newer Audi vehicles, the brake fluid reservoir is covered with a black plastic cover that needs to be removed to reveal the brake fluid reservoir. audi brake fluid reservoir location


  3. Look at the side of the reservoir. Check if the level is between the maximum and minimum marks on the side of the reservoir. If the brake fluid level is below the minimum level, add brake fluid. How to Add brake fluid to Audi A S Q TT models  2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
  4. Look at the cap of the brake fluid reservoir and determine the correct brake fluid type.
  5. Remove the cap by turning it counter-clockwise.
  6. Add brake fluid until the level reaches below the MAX/Full mark. Do not fill the Audi brake reservoir above the maximum mark.

Note that an Audi brake light staying on at startup can indicate a problem with the brake system, but it can be an issue with the charging system or battery in some cases.

If the voltage from the alternator or battery is too low, it can trigger the brake light to stay on.

In this guide, you found instructions on how to check Audi brake fluid level and add brake fluid on most Audi models, including the A3, A4, S, Q3, Q5, Q7, TT.

Your Audi should not lose brake fluid regularly. If you are losing brake fluid, have the brake system checked by a mechanic immediately. 

If your Audi brake warning light (or ABS light) comes on or is flashing while driving or at startup, stop and check the brake fluid level.

Driving with the brake light on can put you, your passenger, and others at risk.


  • Low Brake Fluid Warning
  • Brake Light On
  • The brake pedal is soft.
  • The brake pedal can be pressed all the way.
  • ABS light stays on or flashing