Why is the parking brake warning light flashing?
A flashing parking brake warning light usually signals either that the parking brake is engaged or that there is a fault in the braking system. The exact meaning can vary by vehicle, but it’s a prompt to check the system and seek service if needed.
What a flashing parking brake light can indicate
In modern vehicles, the parking brake indicator can flash for several reasons. The meaning depends on whether you have a traditional handbrake or an electronic parking brake, and on other brake-system sensors. Here are the most common possibilities you might encounter.
- Parking brake is still engaged or not fully released.
- Electronic parking brake (EPB) fault or failure to release properly.
- Low brake fluid level or hydraulic brake-system issue.
- Anti-lock braking system (ABS) or wheel-speed sensor fault causing a combined warning.
- Brake-system electrical fault, such as a wiring issue or control-module error.
- Overheating or excessive wear triggering a fault signal in some models (less common).
The exact meaning varies by make and model. If the light is flashing and you cannot confirm the status of the parking brake, treat it as a warning and seek service promptly.
What to do right now if you notice a flashing light
Before acting, follow these practical steps to minimize risk and determine whether you need help on the road.
- Slow down and find a safe place to pull over as soon as possible.
- Check whether the parking brake indicator is on or whether the lever is still engaged. Fully release the parking brake if there’s any doubt.
- Check the brake fluid reservoir under the hood (if accessible) and look for any obvious leaks or a visibly low level, referring to your manual for the correct fluid type.
- Scan for other warning lights (ABS, traction control, fluid warnings) that accompany the flashing light, which can help pinpoint the issue.
- If the light remains flashing or you notice reduced braking performance (soft pedal, longer stopping distance), do not continue driving; call roadside assistance or head to a qualified repair facility.
These steps are intended to reduce risk on the road. If any doubt remains, err on the side of caution and seek professional evaluation.
How mechanics diagnose and fix flashing brake warnings
When you get to a shop, technicians will typically run a diagnostic scan to pull trouble codes from the brake and vehicle control modules, inspect components, and test the EPB or hydraulic system. The specific approach varies by vehicle, but common procedures include:
Electronic parking brake (EPB) faults
Technicians check the EPB switch and motor operation, wiring, and the control module status to determine whether the fault is mechanical or electronic.
Brake-fluid and hydraulic system
Brakes rely on proper fluid level and pressure; leaks, air in lines, or worn seals can trigger warnings and reduce braking performance.
ABS and sensors
Wheel-speed sensors, reluctor rings, and ABS control modules are tested for faults that can cause the warning light to flash or stay on.
Wiring and control modules
Faulty wiring harnesses or module faults can produce intermittent signals that trigger the warning light without an obvious physical problem.
After diagnosis, repairs may involve replacing EPB components, repairing leaks, topping up fluid, or replacing faulty sensors or modules. Regular maintenance can help prevent these warnings from recurring.
Summary
A flashing parking brake warning light typically signals either that the parking brake is engaged or that there is a braking-system fault, such as an EPB/ABS issue or low brake fluid. The safest approach is to stop safely, verify the brake status, and seek professional inspection if the light persists or braking feels abnormal. Always consult your owner's manual for model-specific meanings and follow up with a qualified technician if in doubt.
How do I clear my parking brake light?
To turn off the parking brake light, first ensure the parking brake is completely disengaged. If the light remains on, check that the brake fluid is at the correct level. If the light still won't turn off, there may be a problem with the parking brake switch, brake fluid level sensor, or another part of the braking system, which requires professional inspection.
This video demonstrates how to engage and disengage the electronic parking brake: 1mQuiteAlrightYouTube · Jan 23, 2025
Basic checks
- Disengage the parking brake: Make sure the parking brake lever is fully lowered or the electronic parking brake button is fully pressed. For electronic systems, you may need to press the brake pedal while pushing the button to disengage it.
- Check brake fluid: Turn off the engine and open the hood to check the brake fluid reservoir. If the fluid is low, add the correct type of brake fluid to the fill line.
- Drive the car: After adding fluid, start driving and gently pump the brakes a few times; this may reset the light.
You can watch this video to learn how to check and add brake fluid: 1mTry This DIYYouTube · Jun 25, 2022
Troubleshooting if the light stays on
If the light remains on after performing the basic checks, one of the following components may be the cause:
- Faulty parking brake switch: This switch is often located under the parking brake lever or pedal. Wiggle the handle or pedal; if the light flickers on and off, the switch is likely faulty and needs to be replaced.
- Bad brake fluid level sensor: A faulty sensor can incorrectly trigger the light even if the fluid level is correct. You can test this by unplugging the sensor to see if the light goes off, but it's best to have a mechanic inspect it.
- Wiring issues: Loose or damaged wires connected to the parking brake switch or brake fluid sensor can cause the light to stay on.
- Anti-lock braking system (ABS) malfunction: Sometimes, a problem with the overall braking system, including ABS, can cause the parking brake light to stay on, especially if the ABS light is also on.
This video explains what to do if the parking brake light stays on: 58sSimple Mechanic AdviceYouTube · Oct 16, 2024
When to see a mechanic
If you have checked the basic solutions and the light is still on, the problem is likely more complex. It is safest to have your vehicle inspected by a qualified mechanic to diagnose and repair the issue, as it could be a sign of a more serious brake system problem.
Can I drive my car with a parking brake malfunction?
No, you should not drive with a broken handbrake because it is a safety risk and can cause further damage. The handbrake is a crucial secondary braking system, and if it fails, your car is unsafe for driving, especially on inclines, and may not be road-legal.
Why you should not drive with a broken handbrake
- Secondary braking system failure: The handbrake serves as an emergency brake if your main hydraulic brakes fail. Without it, you lose this critical backup.
- Risk of rolling away: If the handbrake cable is broken, the car can roll away on even a slight incline, potentially causing an accident.
- Vehicle damage: Driving with the handbrake engaged, which can happen if the handle is stuck, will severely overheat and damage the brake components, tires, and transmission.
- Legal and insurance issues: A broken handbrake is a safety defect that means the vehicle is not road-legal and can invalidate your insurance.
What to do instead
- Park on flat ground: If you must park the car, do so on a flat surface and use the transmission (in gear for a manual, or park for an automatic) as an additional measure to prevent rolling.
- Avoid driving: Do not drive the car. It is not safe, and you should get it repaired before use.
- Get it repaired: Take the car to a mechanic to have the handbrake system inspected and repaired. The repair may be as simple as replacing a cable, but a professional should diagnose the exact issue.
What does a blinking parking brake light mean?
Low you probably noticed the light flashing. When you drove over a dip or bump. This caused the brake fluid in the reservoir to slush.
How does a car act when brake fluid is low?
Symptoms of low brake fluid include a spongy or soft brake pedal, the brake warning light illuminating on the dashboard, increased stopping distance, and visible fluid leaks under the car. Other signs can be unusual noises like squealing or a burning smell when braking.
Common symptoms
- Spongy or soft brake pedal: The pedal may feel mushy and travel farther towards the floor before the brakes engage, a symptom of air in the brake lines, notes Meineke.
- Dashboard warning lights: The brake warning light or the ABS (Anti-lock Braking System) light may turn on.
- Increased stopping distance: It takes longer for your vehicle to come to a complete stop than it used to.
- Visible fluid leaks: You may see reddish-brown or yellowish puddles under your car, especially near the wheels, which indicates a leak in the brake lines or other components.
- Unusual noises: Squealing, grinding, or other strange noises while braking can occur.
- Burning smell: A burning odor after braking can indicate overheating caused by insufficient fluid.
- Brake pedal sinks to the floor: In severe cases, the brake pedal may go all the way down without the car stopping effectively.
- Vibrations: You may feel vibrations or shuddering in the brake pedal when you apply the brakes.
What to do if you notice these symptoms
If you experience any of these symptoms, it is a serious safety concern and you should have your vehicle inspected by a professional as soon as possible. Driving with a low brake fluid level is dangerous and can lead to a complete loss of braking power.
