Owners of 2015 Ford Fusions describe widespread seatbelt failures: driver-side belts freeze in retracted position and won't extend, particularly in warm conditions; passenger-side belts retract fully into the housing and become stuck; and rear belts lock in the extended position and refuse to retract. One owner reported her seatbelt locked up mid-drive at highway speeds, restricting motion; another's wife became temporarily trapped in the vehicle. The problems occur both while parked and during operation. Some owners say jerking on the belt temporarily frees it; others report the issue persists despite dealer visits or even after recall service was supposed to address it.
One owner attempted the dealership's suggested WD-40 spray fix and was injured when a retractor spring shot out—the warning label on the assembly had been altered. Rear-seat buckle installation defects were also reported, with one buckle installed backwards causing the strap to twist and remain twisted. In one collision, a seatbelt separated entirely from its metal cable anchor. Dealers frequently cannot reproduce intermittent locking; Ford has denied warranty coverage on out-of-warranty vehicles and told one owner they cannot help if the problem cannot be reproduced. NHTSA campaigns 16V875000 and ID 10109079 reference these seatbelt issues; owners cite these in complaints and note that recalls have not fully resolved the problems.
Failure modes owners describe
Driver-side seatbelt lockup and retraction failure
Belt locks in the retracted position and refuses to extend, or becomes seized and cannot be pulled out far enough to buckle. Occurs at rest and sometimes while driving. Jerking on the belt may temporarily free it; problem recurs unpredictably.
When: Mileage 32k–69k; occurs after vehicle sits parked for hours in warm conditions or after cold overnight temperatures
Symptoms owners cite: Belt locked in retracted position and won't extend; Inability to fasten belt into buckle; Restricted driver range of motion while driving; Intermittent locking during operation; Belt seized and inoperable while stationary
Repairs/costs cited: Dealership recommended WD-40 spray as DIY fix in at least one case; owner reported proper repair required belt assembly replacement at dealer. One dealer could not reproduce problem and refused warranty coverage. Another confirmed fault and replaced mechanism.
Recalls/TSBs owners mention: NHTSA ID 10109079 and NHTSA Campaign 16V875000 (seatbelts) cited by owners. Ford advised out-of-warranty status in at least one case. One owner reports dealer warranty denial despite TSB/notice existing. Manufacturer stated unable to help when problem could not be reproduced.
Passenger-side seatbelt extension and retraction problems
Front passenger seatbelt fails to extend properly or retracts fully back into housing and becomes stuck, requiring manual manipulation of internal components to free. Related to airbag warning light illumination in one case.
When: Mileage 41k
Symptoms owners cite: Seatbelt won't extend out without extra measures; Belt retracts fully into housing when unlocked and becomes stuck; Airbag warning light illumination (intermittent); Belt inoperable from housing
Repairs/costs cited: Recall service performed at dealership in one case, but problem persisted post-repair. One owner declined service after prior seat position sensor replacement. Owner reported hearing metal ball-like sound inside housing; manual jiggling of housing freed belt temporarily.
Recalls/TSBs owners mention: Recall letter received for front passenger seatbelt extension issue; belt allegedly repaired under recall but failure continued. Dealership referred owner to NHTSA Hotline; no case opened.
Rear seatbelt retraction failure
Rear seatbelts (driver-side and passenger-side) lock in extended position and refuse to retract back into the housing. Problem occurs on both left and right rear positions.
When: Timing not specified; occurs at rest or when exiting vehicle
Symptoms owners cite: Rear seatbelts won't retract into housing; Belt locked in extended position; Inability to fully withdraw belt after use
Temperature-dependent seatbelt freezing
Driver-side seatbelt becomes immobilized in the resting/retracted position during warm weather, preventing use until interior temperature cools or warms sufficiently. Appears to be temperature-sensitive mechanism stiction.
When: Occurs on warm days (around 80°F reported)
Symptoms owners cite: Belt frozen in resting position when warm outside; Inability to buckle up before driving; Delayed functionality requiring temperature change
Recalls/TSBs owners mention: Ford contacted; case number CXH-02550071-N4S4M4 opened.
Seatbelt buckle installation defect
Center rear seatbelt buckle installed backwards, causing the strap to twist when buckled and remain twisted. Incorrect webbing orientation prevents safe and proper fit.
When: Discovered after purchase/use
Symptoms owners cite: Buckle installed backwards; Strap twists when buckled; Twisted strap will not untwist
Seatbelt attachment failure at metal cable
During a collision, seatbelt came loose from its metal cable anchor point. Indicates potential weld or fastening defect at belt-to-cable junction.
When: Occurred during April 10, 2019 accident; vehicle in motion and turning
Symptoms owners cite: Seatbelt separated from metal cable during collision
Recalls/TSBs owners mention: Owner notes all other 2015 Ford Fusions have recalls for the same issue; calls for recall expansion to include Fusion Hybrid models.
Passenger airbag stays off for small-framed occupants
Front passenger airbag remains disabled (off) when a petite occupant (5'1", ~100 lbs) sits in seat, despite no apparent occupant-sensing switch activation. Dealership claims this is by design.
When: Ongoing with small-framed passengers
Symptoms owners cite: Airbag off indicator illuminated with light-weight passenger seated; Airbag does not activate
Repairs/costs cited: Dealership refused to investigate, citing design intent.
Synthesized from 16 NHTSA owner complaints — unverified consumer
allegations, summarized for patterns. The verbatim filings appear below.