SOME 2008-2017 FORD/MERCURY/LINCOLN VEHICLES EQUIPPED WITH SYNC MAY GENERATE A VHR THAT IDENTIFIES A CONCERN WITH THE BRAKES AND SUSPENSION CATEGORY INDICATING SERVICE IS REQUIRED DUE TO A BRAKE SYSTEM WARNING LAMP BEING ILLUMINATED. IF THE PARK BRAKE WAS APPLIED WHEN THE VHR WAS GATHERING DATA FROM THE MAJOR VEHICLE SYSTEMS, THE BRAKES AND SUSPENSION MESSAGE WILL BE REPORTED AS THE VHR LOOKS FOR ANY WARNING LAMPS ILLUMINATED IN THE INSTRUMENT CLUSTER. RERUN THE VHR WITH THE ENGINE ON AND VEHICLE IN PARK, AND ENSURE THE PARK BRAKE IS DISENGAGED. IF THE SYNC VHR IS STILL REPORTING A CONCERN TO THE CUSTOMERS SYNC OWNERS ACCOUNT, REFER TO THE APPROPRIATE WORKSHOP MANUAL SECTION FOR DIAGNOSIS BY
full bulletin at NHTSA ↗2010 Ford Flex brakes problems
moderate 12 complaints filed with NHTSA · avg repair $450 · see brakes across all vehicles →
Failure mileage
Complaints
12
Recalls
0
Avg fix
$450
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering brakes on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
SOME 2008-2017 FORD/MERCURY/LINCOLN VEHICLES EQUIPPED WITH SYNC MAY GENERATE A VHR THAT IDENTIFIES A CONCERN WITH THE BRAKES AND SUSPENSION CATEGORY INDICATING SERVICE IS REQUIRED DUE TO A BRAKE SYSTEM WARNING LAMP BEING ILLUMINATED. IF THE PARK BRAKE WAS APPLIED WHEN THE VHR WAS GATHERING DATA FROM THE MAJOR VEHICLE SYSTEMS, THE BRAKES AND SUSPENSION MESSAGE WILL BE REPORTED AS THE VHR LOOKS FOR ANY WARNING LAMPS ILLUMINATED IN THE INSTRUMENT CLUSTER. RERUN THE VHR WITH THE ENGINE ON AND VEHICLE IN PARK, AND ENSURE THE PARK BRAKE IS DISENGAGED. IF THE SYNC VHR IS STILL REPORTING A CONCERN TO THE CUSTOMERS SYNC OWNERS ACCOUNT, REFER TO THE APPROPRIATE WORKSHOP MANUAL SECTION FOR DIAGNOSIS BY
full bulletin at NHTSA ↗FORD: IF THERE IS AN INTERMITTENT LACK OF POWER, SURGE, OR HESITATION WHILE DRIVING THE BRAKES WILL OVERRIDE ACCELERATION.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Front brake defects start early. Owners hear grinding or loose-sounding clunks within the first 14,000–18,000 miles. Dealers knew about this—one had a technical bulletin for vehicles under 18,000 miles—but Ford acknowledged the actual problem much later: caliper mounting bolts were incorrect or missing, and backing plates had enlarged mounting holes. Even after replacement, the grinding returns.
Rear brakes are worse. Calipers stick or freeze, roasting the rotors and causing uneven pad wear so severe that one pad wears to metal while the other looks new. One owner had rear brake service every six months for years; another needed three full rear replacements within 12 months. Dealers blame metallic pads or say cleaning the caliper sliders is routine maintenance, but the problem keeps coming back.
High-altitude owners face a safety crisis. At 7,000 feet and above, EcoBoost AWD models develop a hard pedal and only 10% braking power on cold start or after sitting. One owner's wife ran a red light unable to stop. Ford replaced the brake booster but the issue persisted. Engineers couldn't reproduce it, and Ford ignored owner complaints by certified mail. One independent shop replaced nearly every brake component and the ECM with no fix.
Other owners report brake hoses routed too close to tires after service, wheel bearings failing around brake work, and brake warning lights that don't activate when they should. Multiple owners complain about parts on back order and poor dealer communication.
Same Ford Flex brakes reports on nearby years: 2009
Failure modes owners describe
Loose caliper bolts / caliper mounting issues
Front caliper bolts not correct and/or caliper backing plates with enlarged mounting holes, causing the calipers to become loose from the backing plates. Ford acknowledged this as a factory defect in at least one case.
When: Under 18,000 miles for some cases; varies by owner
Symptoms owners cite: Noise from front brakes like something loose when braking; Grinding sound from front rotors especially when roads wet
Repairs/costs cited: Calipers, rotors, and backing plates replaced. One owner reports parts were on back order.
Recalls/TSBs owners mention: Technical bulletin issued for vehicles under 18,000 miles. Dealer acknowledged factory defect in caliper mounting. One service rep told owner company was aware but had not come up with a fix.
Stuck/frozen rear calipers
Rear calipers freezing or sticking, leading to overheating rotors, uneven brake pad wear, and thermal damage. Caliper sliders require cleaning but problem recurs, suggesting a systemic issue beyond maintenance.
When: Multiple occurrences; first notable at various mileages; recurring every 6 months to 1+ year for one owner
Symptoms owners cite: Squealing noise from rear passenger brakes; Rotor gets hot; Uneven pad wear (one pad brand new, other worn to metal); Brake pedal noise/vibration; Smell of smoke when driven
Repairs/costs cited: Rear rotors, calipers, and pads replaced multiple times. Caliper sliders cleaned repeatedly. One owner's brake system serviced at least every six months for rear brakes alone; another required replacement three times in 12 months.
Recalls/TSBs owners mention: Dealer claimed cleaning sliders is regular maintenance but could not provide reference in owner's manual. One case attributes problem to metallic pads.
High-altitude brake failure / hard pedal with reduced braking
Episodic brake failures and hard brake pedal occurring at high altitude (above 7,000 feet) affecting multiple owners. Braking power reduced to approximately 10% of normal, resulting in dangerously long stopping distances. Issue appears altitude-specific and related to vacuum loss in EcoBoost AWD models.
When: Emerged around 20,000–21,000 miles; occurs on cold start or first driving after vehicle is stationary
Symptoms owners cite: Hard brake pedal on cold start; Braking power reduced to ~10% of normal; Alarmingly long stopping distances; Brake failure only at high altitude (7,000+ feet); resolves at lower altitudes or after vehicle warms up; One owner ran red light unable to stop
Repairs/costs cited: Master brake booster replaced under warranty but problem persisted or recurred. Independent mechanics replaced master cylinder, brake booster, vacuum pump, calipers, check valve, brake lines, pedal sensor, and ECM without resolution.
Recalls/TSBs owners mention: Ford claimed nothing wrong; sent two engineers who could not reproduce issue. Ford initially alerted in April 2010 by owners; Ford Motor Company later ignored follow-up calls, emails, and certified mail. No acknowledged fix available.
Brake hose contact with tire / improper routing
Brake hose routed improperly or positioned too close to tire, resulting in hose failure and brake fluid loss. Occurred after caliper replacement.
When: After caliper replacement service
Symptoms owners cite: Brake pedal goes to floor; Significant decrease in braking performance; Brake hose failure
Repairs/costs cited: Brake hose failed due to contact with tire. Owner found proper routing was not maintained during caliper replacement.
Front wheel bearing failure coinciding with brake work
Front and rear wheel bearing failures that occurred at or around the same time as brake service visits. In some cases, dealers misdiagnosed bearing failure as tire noise.
When: Coinciding with caliper/brake replacement service
Symptoms owners cite: Noise from wheel bearing; Dealers initially attributed to tire noise
Repairs/costs cited: Front passenger wheel bearing replaced twice during brake service. Driver side rear bearing replaced; independent shop diagnosed immediately, dealer initially claimed tire noise.
Brake warning light failure to illuminate
Brake warning light did not activate despite brake pedal going to floor and loss of braking performance due to brake hose failure.
When: During normal driving after brake system failure
Symptoms owners cite: No warning light despite brake pedal at floor; Bulb tested and confirmed functional
Synthesized from 12 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 0 most recent
Had brakes trouble with your 2010 Ford Flex?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the brakes problem on the 2010 Ford Flex?
It's a documented issue but not catastrophic. 12 complaints have been filed. Repairs average $450 and most owners catch it before it causes a breakdown.
At what mileage does the brakes typically fail?
Across the 11 complaints that reported odometer mileage, most brakes failures cluster between 13,000 and 43,000 miles, with the median around 20,000. A quarter of owners report trouble before 13,000; a quarter make it past 43,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $450 for brakes repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to brakes?
No active recalls currently cover brakes issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2010/Ford/Flex.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.