Subaru Ascent 2018-2026 Owner's Manual: Brake fluid

Checking the fluid level

WARNING

• Prevent brake fluid from coming into contact with your eyes when servicing your Subaru Ascent, as it can cause serious irritation or injury. If exposure occurs, rinse immediately with clean water and seek medical attention if necessary. Wearing protective eyewear is strongly recommended.
• Brake fluid is hygroscopic, meaning it absorbs moisture from the air. This moisture contamination can significantly reduce braking efficiency and compromise the safety of your Subaru Ascent.
• If frequent topping up of brake fluid is required, it may indicate a leak or malfunction in the braking system. Have your Subaru Ascent inspected by an authorized SUBARU dealer without delay.

CAUTION

• When refilling brake fluid in your Subaru Ascent, ensure that no dirt, dust, or foreign particles enter the reservoir, as contamination can damage the braking system.
• Avoid spilling brake fluid onto painted surfaces or rubber components.

  The chemical composition of brake fluid may damage paint finishes and degrade rubber parts.

• Take care not to spill brake fluid onto hot components such as the exhaust system. If contact occurs, it may produce smoke, unpleasant odors, or pose a fire risk. Always wipe away any spilled fluid immediately.

Check the brake fluid level of your Subaru Ascent regularly, ideally once a month, while the vehicle is parked on a level surface to ensure an accurate reading.

1. "MAX" level line
2. "MIN" level line

Always inspect the fluid level visually from outside the reservoir. If the level drops below the "MIN" mark, add brake fluid until it reaches the "MAX" level, ensuring safe braking performance of your Subaru Ascent.

Use only brake fluid from a sealed container to prevent contamination and maintain fluid integrity.

Recommended brake fluid

CAUTION

Never mix different brands or types of brake fluid in your Subaru Ascent. Avoid combining DOT 3 and DOT 4 fluids, even if they are from the same manufacturer, as this may negatively affect braking performance.

Brake pedal

Regularly check the brake pedal free play and reserve distance according to the maintenance schedule provided in the "Warranty and Maintenance Booklet". Proper pedal feel is essential for safe and predictable braking in your Subaru Ascent.