2011 Ford Escape Check Brake System Car Won’t Start

Problem

My 2011 Ford Escape won’t start and the “Check Brake System” message is displayed on the dashboard.

Possible Causes

* **Faulty Brake Pedal Position Sensor:** This sensor monitors the position of the brake pedal and sends a signal to the Powertrain Control Module (PCM). If the sensor is faulty, the PCM may not receive the correct signal and prevent the engine from starting.
* **Malfunctioning Brake Light Switch:** The brake light switch activates the brake lights when the brake pedal is depressed. If the switch is faulty, it may not send the correct signal to the PCM, causing the “Check Brake System” message to appear and preventing the engine from starting.
* **Low Brake Fluid Level:** If the brake fluid level is low, it can trigger the “Check Brake System” message and prevent the engine from starting as a safety precaution.
* **ABS Module Issues:** The Anti-lock Braking System (ABS) module controls the brake system and monitors brake fluid pressure. If the ABS module malfunctions, it can display the “Check Brake System” message and prevent the engine from starting.
* **PCM Failure:** The PCM is the main computer that controls various vehicle systems, including the engine and brake system. If the PCM fails, it can cause the “Check Brake System” message to appear and prevent the engine from starting.

Troubleshooting Steps

**1. Check Brake Fluid Level:**

* Locate the brake fluid reservoir under the hood.
* Check the fluid level using the dipstick or markings on the reservoir.
* If the fluid level is low, refill it with the correct type of brake fluid.

**2. Inspect Brake Light Switch:**

* Locate the brake light switch near the top of the brake pedal.
* Unplug the electrical connector and check for corrosion or damage.
* If necessary, replace the brake light switch.

**3. Test Brake Pedal Position Sensor:**

* Using a multimeter, measure the voltage at the brake pedal position sensor connector.
* Consult a repair manual for the specific voltage values.
* Replace the sensor if the voltage readings are incorrect.

**4. Scan for Diagnostic Trouble Codes (DTCs):**

* Connect a diagnostic scan tool to the vehicle’s OBD-II port.
* Scan for any DTCs related to the brake system or PCM.
* Refer to the DTC code definitions to identify the specific cause of the problem.

**5. Check ABS Module:**

* Visually inspect the ABS module for any signs of damage or corrosion.
* Consult a repair manual for specific diagnostic tests for the ABS module.
* Replace the ABS module if necessary.

**6. Inspect PCM:**

* Locate the PCM under the hood or dashboard.
* Visually inspect the PCM for any signs of damage or corrosion.
* If necessary, have the PCM tested by a qualified mechanic or dealership.

Additional Tips

* If the “Check Brake System” message appears intermittently, it may indicate a loose or intermittent connection in the brake system.
* Use only genuine Ford brake fluid to prevent damage to the brake system components.
* If you are uncomfortable troubleshooting the brake system yourself, seek professional assistance from a qualified mechanic or dealership.
* Regular brake maintenance, including fluid changes and inspections, can help prevent these issues from occurring.

Conclusion

The “Check Brake System” message on a 2011 Ford Escape can be caused by various brake system or PCM issues. By following the troubleshooting steps outlined above, you can identify the root cause of the problem and take the necessary steps to repair or replace any faulty components. It is crucial to address these issues promptly to ensure safe vehicle operation.