Across 14 complaints, 2016 Fusion seat belt problems cluster into five distinct failure modes, all rendering the safety system partially or wholly inoperable. The most common issue is premature locking: the driver's belt seizes after extending only a few inches, requiring multiple door cycles or hard pulls to release enough webbing to buckle. Once buckled, the belt often goes slack. This pattern hits owners early in vehicle life and escalates over time.
A subset reports heat-related failure: on warm days with the car parked in sun, the driver's belt retracts excessively and becomes stuck, sometimes forcing owners to drive unbuckled until the vehicle cools. Rear seat belts—particularly on models with inflatable-belt features—lock immediately on any pull, making rear seating unsafe. A few owners describe complete retraction failure, where the belt simply refuses to roll back in after use. One vehicle with only 9,000 miles exhibited locking at purchase. Several complaints reference NHTSA recall 16V875000 (Campaign 16S42) from December 2016, which addresses seat belts that may not restrain occupants. Dealerships quoted repairs at $400–$1,200 but some owners remain unrepaired.
Failure modes owners describe
Premature locking / failure to extend
Seat belt webbing locks or catches after only a few inches of extension during initial buckle-in or while driving, preventing normal use. Owners report needing to open/close the door repeatedly or pull forcefully multiple times before the belt releases enough to buckle. Problem escalates over time.
When: Early in vehicle ownership; one owner noted issue starting late Feb-early March 2020; another with under 9,000 miles; various mileages up to 80k+
Symptoms owners cite: Belt locks prematurely after few inches of webbing pulled; Intermittent locking on initial car entry; Requires multiple door cycles or pulls to release; Becomes slack once buckled while driving; Problem worsens over time
Repairs/costs cited: One dealer quoted $400–$1,200 for seat belt replacement; another diagnosed a seat belt safety bolt was needed but vehicle was not repaired
Recalls/TSBs owners mention: December 5, 2016 NHTSA recall 16V875000 (Ford campaign 16S42) addresses front seat belts that may not restrain occupants; some owners report this recall may apply to their symptoms
Heat-induced retraction lock
Driver-side seat belt becomes stuck or difficult to extract when vehicle sits in direct sunlight on warm days. Belt retracts excessively and cannot be pulled out until vehicle cools. Affects ability to safely fasten belt before driving.
When: Occurs on warm/hot days with vehicle parked in sun; problem resolves when vehicle cools down
Symptoms owners cite: Belt cannot be extracted after sun exposure; Excessive retraction in heat; Returns to normal function when cooled; Multiple occurrences reported
Repairs/costs cited: Likely related to spring retracting mechanism; one owner drove multiple times without seatbelt due to inability to use belt
Failure to retract / belt stays extended
After stopping or parking, seat belt webbing fails to retract into the retractor. Webbing remains pulled out and does not roll back in, leaving the belt slack and unable to restrain occupant.
When: Occurs after vehicle has been driven or stopped; one instance at 63,000 miles
Symptoms owners cite: Belt does not retract after vehicle stops; Webbing remains extended; Belt stays slack and non-functional; No warning lights
Repairs/costs cited: One Ford dealership was unable to duplicate the failure or diagnose the problem
Rear seat belt lock-up (both sides)
Both rear passenger seat belts lock immediately when pulled, regardless of pull speed or force, preventing rear occupants from buckling in. Reported as a pattern across 2013+ Ford vehicles with 'inflatable belt' feature.
When: Occurs over 80k+ miles; appears to be systematic across model year range
Symptoms owners cite: Both rear belts lock up on pull; Locks occur at any pull speed; Prevents rear occupants from using seats safely; Pattern reported on multiple vehicles
Repairs/costs cited: Owner notes pattern suggests broken components in inflatable belt system; recommends inspection and replacement
Recalls/TSBs owners mention: Owner states this should be a recall and repair free of charge due to safety criticality
Intermittent seizure / inconsistent operation
Seat belt locks up intermittently, working normally some days and refusing to deploy or retract on other days. Unpredictable behavior makes safety uncertain and prevents reliable use.
When: Intermittent failure pattern; one instance documented at 45,000 miles
Symptoms owners cite: Works one or two days, then locks for several days; Intermittent seizure of webbing; Unpredictable function; Symptoms match NHTSA recall 16V875000
Repairs/costs cited: Worthington Ford diagnosed that seat belt safety bolt was needed but repair was not completed
Recalls/TSBs owners mention: Symptoms align with NHTSA Campaign 16V875000 (seat belt may not restrain occupants)
Synthesized from 14 NHTSA owner complaints — unverified consumer
allegations, summarized for patterns. The verbatim filings appear below.