my Ram 1500 DT (2019-Present) has a hard brake pedal, what should I do?

Solution

1. Preparation

• Tools Required: Brake fluid, OBD-II scanner, vacuum gauge, basic hand tools (socket set, wrenches).
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to prevent any electrical issues.

2. Inspect and Replace Brake Booster

• Sub-steps:
  1. Remove any components obstructing access to the brake booster (e.g., air intake duct).
  2. Disconnect the vacuum line from the brake booster; inspect for damage.
  3. Remove the nuts/bolts securing the brake booster to the firewall.
  4. Pull the brake booster out of the vehicle, being careful not to damage the master cylinder.
  5. Install the new brake booster by reversing the removal steps.
  6. Reconnect the vacuum line securely to the new brake booster.

3. Refill and Bleed Brake System

• Sub-steps:
  1. Inspect brake fluid level and top off if necessary using the appropriate brake fluid type (DOT 3 or DOT 4).
  2. Bleed the brake lines to remove any air pockets:
     • Start from the farthest wheel from the master cylinder (usually the right rear).
     • Open the bleeder valve and pump the brake pedal until fluid flows without bubbles; close the valve before releasing the pedal.
     • Repeat for each wheel in the correct order (right rear, left rear, right front, left front).

4. Reconnect Battery and Test

• Reconnect the negative battery terminal.
• Start the engine and check the brake pedal feel.
• Ensure there are no leaks and the brake warning light is off.