Brake fluid service is a safety service. If your brake pedal feels soft, low, or sinks under steady pressure, schedule an inspection before driving more.
Short answer
Most manufacturers recommend brake fluid service every 2 to 3 years regardless of mileage, because brake fluid absorbs moisture from the air. High moisture content lowers boiling point and can cause brake fade during heavy use, especially in San Antonio summer heat.
Signs your brake fluid is due
Soft or spongy pedal, especially after braking hard or driving in hot weather.
Dark, brown, or visibly dirty fluid in the reservoir.
ABS warning light or brake warning message.
Mercedes-Benz, BMW, or other European vehicles that show a brake fluid service interval reminder on the dash.
Flush vs bleed
Bleeding the brakes removes air from the system, often after a brake job. It does not fully replace the old fluid.
A brake fluid flush replaces the contaminated fluid throughout the system with fresh fluid that meets the vehicle's specification.
AAB Service uses the correct DOT specification for each vehicle, including DOT 4 or DOT 4 LV where required for European platforms.
San Antonio auto repair
Have a vehicle-specific question?
AAB Service can inspect, test, and explain what is happening with your vehicle so you can decide what to do next.