When and Why You Should Change Your Brake Fluid
Most manufacturers recommend changing your brake fluid every 2 years or 30,000 miles, though this can vary based on your driving habits in Phoenix and your specific vehicle model.
You probably can’t remember the last time you thought about your brake fluid, if at all. You may not even think about your brakes unless they stop working. Most of us take our brakes for granted and just know that when we press the pedal, the brakes will stop the car. However, it isn’t always that simple. Your brakes do need some care and attention, and it starts with the brake fluid.
What Exactly is Brake Fluid?
The braking system in your vehicle is hydraulic and requires fluid to convert force into pressure. Let’s take a step back for a moment and gain a better understanding of the brake system. It has three parts: brake pads, calipers, and rotors. As you press the brake pedal, it indicates that the caliper needs to move. When it moves, the pads squeeze the rotor, which is connected to the wheel. This is what slows down the vehicle.
This system wouldn’t work at all without brake fluid. As you press the brake pedal, the fluid converts the force of your foot on the pedal into pressure. This pressure is applied to the front and rear brakes, which slows down your vehicle.
How the Phoenix Climate Affects Your Brake Fluid
While many owner's manuals suggest a standard interval, driving in the Valley of the Sun presents unique challenges. Phoenix heat isn't just hard on your AC—it’s hard on your braking system.
The Extreme Heat Impact: During our triple-digit summers, your braking system operates at much higher temperatures. Intense heat can accelerate the chemical breakdown of brake fluid, leading to a 'spongy' pedal feel when you're stuck in stop-and-go traffic on the I-10 or Loop 101.
Monsoon Moisture: Brake fluid is hygroscopic, meaning it absorbs water from the air. During our monsoon season, the increased humidity can seep into your brake lines. Even a small amount of water lowers the boiling point of the fluid, which can lead to brake fade or internal corrosion.
At Coulter on Camelback, we recommend a brake fluid test at every oil change to ensure your vehicle is prepared for the Arizona elements.
How Often Does it Need to Be Changed?
Speaking in general terms, brake fluid should be changed every two years or 20,000 miles. Some manufacturers recommend it’s changed every three years or 45,000 miles. What’s most important to note is the type of driver you are. This is a better indicator of when you’ll need to change your brake fluid. If you are a hard braker, chances are you’ll need brake fluid changed sooner. If you aren’t sure about your brake fluid, stop in at Coulter Camelback Buick GMC and have a qualified technician make s determination.
| NEW | AGING | CONTAMINATED |
|---|---|---|
Fluid is translucent and looks like light honey or white wine. Good to go. | Fluid has darkened due to heat and minor moisture absorption. Schedule flush soon. | Fluid is burnt/black and likely contains debris or high water content. CRITICAL - Replace. |
Are There Other Ways to Tell if It’s Time For a Fluid Change?
Brake fluid is put to the test every day. It has to work hard to keep you safe on the road. With time, it gets contaminated, burnt, or evaporates. Any of this can impair your brake function.
Be on alert for these signs it's time to change your brake fluid:
Spongy Brakes
Anytime you press on the brake pedal, it feels soft, spongy, loose, or bouncy; that’s not a good thing. Another bad sign is if you have to push the brake pedal down to the floor before it slows and stops your vehicle. Any of these can be indicators that you need a brake fluid change. If there is low brake fluid in your brake line, air fills in the gaps where the fluid should be. When this happens, you are left with soft brakes. This is not a safe condition for your car, and you should have it serviced at Coulter Camelback Buick GMC right away.
Dashboard Light
The ABS light on your dashboard is an alert that there’s a problem with your anti-lock brakes. This system prevents your wheels from locking up. When it works properly, you keep traction and avoid skidding. When the brake fluid is low, it prompts the ABS light to come on.
Funky Smell or Noise During Braking
Anytime you notice odd smells coming from your car, it’s not a good sign. If there is a burning smell after applying the brakes hard could mean your fluid is burnt. You should pull over in a safe place and allow your car to cool. You want to schedule a service appointment immediately because left untreated, you could have brake failure. Alternatively, you may hear weird things. Scraping or grinding while braking often means your brake system needs attention.
Poor Performance
If your brakes aren’t responsive, they may not keep you safe. Any noticeable difficulties or delays with stopping or slowing down means you need your car serviced immediately. They could also be indicators that you need a brake fluid flush.
Schedule Service in Phoenix, AZ
While you may not think of them often, you know your brakes are important. You should follow your regular maintenance schedule for brakes. If you aren’t sure what that is or the condition of your brakes, visit Coulter Camelback Buick GMC for a full brake inspection. Our technicians will ensure you have all the stopping power you need and get you back on the road quickly.