Corey Conquest is an accomplished automotive technician with more than a decade of experience in advanced vehicle diagnostics, repairs, and preventative maintenance. Based in Pace, Florida, he has built a career defined by technical precision, reliability, and a steadfast commitment to quality workmanship. Corey specializes in engine diagnostics and repair, suspension and alignment, brake systems, and automotive HVAC, with certifications that include ASE, Ford factory training, and credentials in brakes, steering, and suspension.... Read more
Today’s customer came in complaining that the brake pedal on his 2012 Ford Edge would randomly drop to the floor when sitting at a stop. No other braking issues were present that the customer could recall.
After a quick test drive, I was not able to duplicate the customer’s concern, so I requested to keep the vehicle and take it on a longer test drive. After an hour of driving, I was finally able to duplicate this truck’s issue. I brought the truck back to the shop for a thorough brake inspection.
After inspecting the brake calipers, hoses, and lines for leaks, I found no visible signs of leaking or damage, and inspecting the master cylinder and brake booster yielded the same results: no visible damage or leaks. Next, I checked the brake fluid and noticed it was slightly darker than it should be. This truck’s brake fluid had never been serviced.
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After no leaks or visible damage to any parts were found, I used my full-system scanner to monitor the ABS module while pressing on the brake pedal to ensure the correct pressure was being applied. All the pressure readings looked normal.
Looking through the ProDemand database, I found a Technical Service Bulletin (TSB) for this Ford Edge and multiple other Ford vehicles exhibiting the same conditions. Inspection and pressure checks at multiple points in the brake system led me to conclude that the ABS module needed to be thoroughly bled.
After inspecting and pressure-checking all brake components, I found air in the ABS module, resulting in excessive pedal travel under braking. In addition to the brake bleed, the customer requested to replace the master cylinder and brake booster due to the vehicle’s age. Air in the braking system was the concern, but I replaced the master cylinder and brake booster at the customer’s request.
After the repair, I bled the entire brake system, and using my full-system scanner, I actuated the ABS module bleeding procedure to push any air bubbles that might be trapped in the hydraulic unit out, and bled again using a…
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