Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE
Brake Fluid: Inspection
WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
- Do not let brake fluid come into contact with the painted surface of the vehicle. Wash away with water immediately and wipe off if it is spilled by accident.
- Do not mix different kinds of brake fluid.
- Do not allow water or foreign matter to enter the reservoir tank.
- Always use new brake fluid when replacing or refilling the brake fluid.
- Park the vehicle on a level surface.
- Check the brake fluid for discoloration.
- Check that the amount of brake fluid is between the lines of "MIN" and "MAX" from the front view or from the forward right and left within 90°.CAUTION:
- Always check the level using the specified direction because there is a partition in the reservoir tank.
- When using a tool such as a dropper to adjust the fluid amount, do not use one that has been utilized for deteriorated brake fluid or other liquids.
Doing so may cause the sealing parts or brake fluid to deteriorate, resulting in a malfunction.
- Except for electric brake booster model
- Electric brake booster model
- If the brake fluid level is close to "MIN", check the brake pipe or brake hose for any leak first. Then, check that the brake fluid level is reduced due to brake pad wear.
- If the fluid is extremely discolored or the brake fluid level is less than the specified value after inspection, replenish or replace with the new fluid.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.