How to bleed brakes on 2012 Acura TSX?
Bleeding the brakes on a 2012 Acura TSX is a straightforward four-wheel procedure. Start at the wheel farthest from the master cylinder and work toward the nearest: right rear, left rear, right front, left front, using fresh DOT 3 or DOT 4 brake fluid and keeping the reservoir topped off. If you still have a soft pedal after bleeding all four corners, the ABS pump may need to be cycled with a scan tool or the system may require professional service.
The TSX uses an anti-lock braking system (ABS) alongside the standard hydraulic brakes, so air can become trapped in the ABS modulator. This guide walks you through the essential steps, what tools you’ll need, and how to handle ABS considerations safely. Always prioritize safety, and consider professional help if you’re unsure or encounter persistent pedal issues.
What you’ll need
Before you start, gather the tools and materials that make brake bleeding safer and more reliable.
- Fresh brake fluid that meets DOT 3 or DOT 4 specifications (check the owner’s manual for exact requirements). Do not use DOT 5 silicone fluid unless specifically instructed.
- Clear tubing that fits snugly over the bleeder screws
- A clean brake fluid container to hold old fluid
- A wrench that fits the bleeder screws (often around 8 mm on Honda/Acura calipers)
- A brake bleeder bottle or a gravity/pressure bleeder kit
- A recipient to catch the old fluid and a splash shield or rags to protect paint
- Jack, jack stands, wheel chocks, and a helper to operate the brake pedal
- Personal protective gear (gloves and eye protection)
With the right gear on hand, you’ll be set to perform a clean, safe bleed and minimize the chance of reintroducing air into the system.
Bleeding sequence for the TSX
The following list follows the recommended farthest-to-nearest approach for a four-wheel brake system. This sequence helps reduce the chance of introducing air into the master cylinder as you work.
- Right rear wheel:
- Loosen the bleeder screw on the right rear caliper and attach clear tubing to it, placing the other end in a collection bottle.
- Have an assistant slowly press the brake pedal to the floor and hold it there, then open the bleeder valve to allow fluid (and air) to escape. Close the valve before the pedal returns.
- Repeat until the fluid runs clear and free of bubbles, topping the master cylinder reservoir as needed to prevent air from entering.
- Left rear wheel:
- Repeat the same process on the left rear caliper, ensuring the reservoir stays topped up.
- Right front wheel:
- Proceed to the right front caliper and bleed in the same manner as the rear wheels, maintaining a steady flow of fluid.
- Left front wheel:
- Finish with the left front caliper, ensuring the line is bled dry of air and the fluid appears clear.
After you complete the four corners, recheck the master cylinder reservoir and ensure the pedal feels firm with the engine off, then perform a cautious test drive to verify braking performance in a safe area.
Wheel access and preparation
For each wheel, you’ll typically need to remove the wheel to access the bleeder screws. Ensure the car is securely supported on stands, the parking brake is released, and wheel chocks are placed opposite the jacked tire to prevent movement. Keep the work area clean and avoid letting brake fluid contact paint, as it can cause damage.
Once all four corners are bled, wipe away any spilled fluid and perform a final pedal check with the engine off and then with the engine running to confirm the pedal’s feel and brake response.
ABS considerations
Because the TSX uses an ABS module, air trapped in the ABS pump can complicate a complete bleed. If you still experience a soft or spongy brake pedal after bleeding all four corners, you may need to cycle the ABS pump with a compatible diagnostic tool, or have a professional service the ABS unit. Do not rely on simple gravity bleeding alone if the ABS light is on or if bubbles persist after a full bleed.
- Bleed in the standard order and keep the reservoir topped during the entire process to minimize air entry.
- If air remains after the four-wheel bleed, use a brake system scanner tool to cycle the ABS modulator pump and repeat the bleed as needed.
- If you don’t have access to ABS cycling equipment, consider taking the vehicle to a shop with Honda/Acura ABS capabilities.
Safety and test results after bleeding should include a firm, consistent pedal and no fluid leaks. If uncertainty remains at any point, professional service is advised to ensure the braking system functions correctly.
Safety tips and maintenance notes
Bleeding brakes is a maintenance task that directly affects vehicle safety. Follow these cautions to minimize risk and ensure a proper bleed.
- Always work on a cool braking system and on a flat, stable surface. Use wheel chocks and jack stands for safety.
- Use the correct brake fluid type and never mix fluids from different DOT ratings. Avoid introducing air by keeping the reservoir covered when not adding fluid.
- Dispose of old brake fluid in accordance with local regulations; do not pour it down the drain.
- Inspect all bleeder screws and lines for corrosion or damage; replace any worn components before bleeding if needed.
- After finishing, perform a slow, controlled test drive in a safe area to confirm braking performance and pedal feel.
Following these tips helps ensure the brake system remains reliable and safe after a brake fluid bleed.
Summary
Bleeding the brakes on a 2012 Acura TSX involves a careful four-wheel bleed beginning at the farthest wheel (right rear) and moving to the nearest (left front), using fresh DOT 3 or DOT 4 fluid and keeping the reservoir topped. Pay attention to ABS considerations, and don’t hesitate to seek professional help if the pedal remains soft after bleeding or if the ABS system shows any warning lights. Proper technique and safety precautions will restore firm pedal feel and reliable stopping performance.
