The 2015 Ford Fusion steering system exhibits multiple critical failure modes that have affected drivers at speeds ranging from parking-lot crawls to highway driving.
Power steering electrical failures top the complaints. Owners describe sudden loss of steering assist while driving or inability to turn the wheel at startup, accompanied by dashboard warnings for "Steering Assist Fault Service Required," "Service AdvanceTrac," and "Hill Start Assist Not Available." Many failures occur without prior warning, forcing drivers to muscle through stiff manual steering. Some failures appear tied to low battery state or battery replacement; others strike randomly at various mileages between 26,000 and 150,000 miles.
Steering gear motor attachment bolts, particularly in salt-belt states, corrode and fracture. Owners hear grinding or whining noises during turns, then lose all power steering when the motor detaches. Recall 15S14 (2015) addressed bolt corrosion with sealant and replacement hardware, but owners report the fix is temporary—some bolts have refractured within months. Recall 19S26 (2019) targeted the same issue but is limited to high-corrosion states and excludes many VINs, even those in covered geography.
Steering wheel seizure—where the wheel locks solid without warning—sends drivers scrambling. Owners report this happens at low-speed turns or highway speeds, sometimes requiring excessive force to regain any movement.
Shifter cable bushings (Recall 18S20) detach or corrode away, allowing parked vehicles to roll despite being in Park. One owner's vehicle rolled backward and nearly crushed her while exiting. Parts for repair remain unavailable for extended periods.
Repair costs range widely—$1,300 to $4,000+—and many owners discover their VIN isn't listed in Ford's recall databases despite experiencing identical failures covered by recalls on other model years and regions.
Failure modes owners describe
Power Steering Assist Failure - Electrical System
Electric power steering module fails suddenly while driving or at startup, causing loss or severe difficulty in steering. Dashboard warnings display 'Steering Assist Fault - Service Required' and 'Service AdvanceTrac.' Vehicle becomes extremely difficult to steer, especially at low speeds. Some failures occur intermittently.
When: At startup after battery drain or prolonged parking; during turns at low speeds; at highway speeds (40-70 mph); varies from 26,000 to 150,000 miles
Symptoms owners cite: Steering wheel becomes extremely difficult to turn; Sudden loss of power steering assist while driving; Multiple warning lights illuminate: 'Steering Assist Fault Service Required,' 'Service AdvanceTrac,' 'Hill Start Assist Not Available'; Steering wheel locks or seizes; Steering assist failure at startup after battery drain or cold soak; Intermittent power steering loss during highway and city driving
Codes mentioned: Power Steering Assist Fault, Service AdvanceTrac, Hill Start Assist Not Available, Steering Locked - Stop Safely
Repairs/costs cited: Steering rack, steering gear motor module, and entire electric power steering assist system replacement quoted at $1,300–$4,000+; some dealers cite $2,086–$2,900; battery replacement attempted but ineffective
Recalls/TSBs owners mention: Ford references multiple recalls (15V250000, 15V340000, 15S14, 18V167000, 19V632000) but many complainants' VINs are not included in recall lists despite matching failure descriptions. Extended warranty offered in some cases; some recalls cite parts unavailable for extended periods
Steering Gear Motor Attachment Bolts - Corrosion and Fracture
Motor attachment bolts securing the electric power steering motor to the steering rack corrode and crack or snap completely, causing sudden loss of power steering assist and complete motor detachment. Owners report loud whining, grinding, or popping noises during turns. Defect appears to recur even after recall repairs.
When: Between 50,000–150,000 miles; corrosion-related failures primarily in salt-belt states (Northeast, Midwest); some recur within months or years of initial recall repair
Symptoms owners cite: Loud whining or grinding noise during low-speed turns; Popping noise from steering assembly; Steering becomes stiffer or slipping; Total loss of power steering assist; Steering wheel becomes very difficult or impossible to turn; Motor physically separates from rack and pinion
Codes mentioned: Power Steering Assist Fault, Service AdvanceTrac
Repairs/costs cited: Replacement of steering gear motor attachment bolts and sealing (recall 15S14); full steering gear or rack and pinion replacement if bolts broken or missing during recall service; one owner reports $2,000+ repair after bolt refracture post-recall
Recalls/TSBs owners mention: Recall 15S14 (2015) and 19S26 (2019) addressed bolt corrosion with sealant and replacement bolts; however, sealant is acknowledged as temporary patch; 19S26 limited to high-corrosion states; many VINs excluded despite geographic eligibility; some owners denied coverage due to state of residence exclusion or VIN not on original recall list
Shifter Cable Bushing Detachment
Plastic bushings attaching the shifter cable to the transmission detach or corrode away, causing the vehicle to roll or shift unexpectedly when parked in Park. Vehicle appears to be in Park but is actually in Reverse or Neutral, with no warning to the driver.
When: Recall 18S20; failures reported at unpredictable times with vehicles parked; one instance at backup at low speeds
Symptoms owners cite: Vehicle rolls backward while parked in Park; Shifter cable disconnects or detaches from transmission; Vehicle transmission stuck between Park and Reverse or Neutral; No warning lights or indicators before failure; Visible white bushing remnants and corrosion under hood
Repairs/costs cited: Replacement of shifter cable bushings; however, recall parts were unavailable for extended periods (several months to over a year), leaving vehicles undrivable during waiting period
Recalls/TSBs owners mention: Recall 18S20 issued; however, replacement parts were not in production at time of recall notice, causing extended delays and manufacturer offering no temporary transportation assistance
Steering Wheel Seizure and Lock
Steering wheel suddenly locks, seizes, or becomes completely immovable, often without prior warning. Failure can occur at startup or while driving at any speed. Some cases involve steering column mechanical failure.
When: At startup; while making left or right turns at low speeds (5 mph); while driving on highways (40–70 mph); mileage ranges from 22,000 to 130,000 miles
Symptoms owners cite: Steering wheel locks or seizes without warning; Steering wheel completely immovable at low speeds (5 mph) and higher speeds; No prior warning lights or indicators before seizure; Steering wheel very difficult to turn after restart; Multiple warning lights illuminate after seizure (Steering Assist Fault, AdvanceTrac)
Codes mentioned: Steering Locked - Stop Safely, Steering Assist Fault Service Required, Service AdvanceTrac
Repairs/costs cited: Steering gear assembly replacement; steering column replacement noted in at least one case; one owner drove home using excessive effort; repairs prevented by parts availability
Recalls/TSBs owners mention: Recalls 18V167000 and 19V632000 exist but many complainants' VINs not included; manufacturer offers no assistance when recall does not apply to VIN despite identical failure modes
Steering Assist Electrical Fault with Warning Messages
Dashboard displays 'Steering Assist Fault - Service Required' and other traction/hill assist warnings, often triggered by low battery state, battery replacement, or electrical system stress. Steering becomes extremely stiff or impossible to turn. Problem persists after key cycle, restart, and battery correction attempts.
When: After battery drain during extended vehicle non-use (COVID lockdown, holiday storage); after battery replacement; at startup; some intermittent during turns
Symptoms owners cite: Dashboard warnings: 'Steering Assist Fault Service Required,' 'Service AdvanceTrac,' 'Hill Start Assist Not Available,' 'Low Battery Features Temporarily Turned Off'; Steering wheel extremely difficult or impossible to turn; Multiple warning lights illuminate simultaneously; Warnings persist after key cycle and restart; Warnings persist overnight and after battery reset
Codes mentioned: Low Battery Features Temporarily Turned Off, Steering Assist Fault Service Required, Service AdvanceTrac, Hill Start Assist Not Available
Repairs/costs cited: Tow to dealership required due to safety concerns; key cycle resets suggested but failed; full steering assist system diagnosis and replacement anticipated to be expensive; some dealers suggest diagnostic testing at additional cost
Recalls/TSBs owners mention: Ford suggested key cycle troubleshooting; no recall found for complainant's VIN; no direct manufacturer assistance offered; owners fear expensive out-of-warranty repair
Lane-Keeping Assist System Over-Correction
Lane-keeping assist feature jerks steering wheel hard to one side unprovoked, nearly causing sideswipe collision at highway speeds with heavy traffic.
When: Highway driving at 80 mph with heavy traffic; sensitivity set to 'Normal'
Symptoms owners cite: Lane-keeping assist jerks steering wheel hard left unprovoked while vehicle centered in lane; Over-correction required by driver to prevent collision
Repairs/costs cited: Assist mode disabled; alert-only mode activated
Active Park Assist Collision
Active Park Assist feature strikes parked vehicle during parallel parking operation, despite operator following manual instructions and removing hands from steering wheel as directed.
When: First use of Active Park Assist on newly purchased vehicle
Symptoms owners cite: Active Park Assist strikes vehicle parked behind during parallel park attempt; Driver unclear whether system or driver controls brakes during parking
Repairs/costs cited: User disabled feature; struck vehicle requires repair
Recalls/TSBs owners mention: Manual instructions on pages 180 and 182 noted as unclear regarding brake operation and speed cutoff at 6 mph
Ignition Switch - Engine Kill While in Drive
Ignition key can be rotated to Accessory or Off position while transmission is in Drive, stopping the engine unexpectedly without disabling transmission. Vehicle safety interlock not preventing inadvertent ignition shutdown.
When: Key fob rotation from Accessory position; knee contact with dangling key fob in ignition; during parking lot operations
Symptoms owners cite: Ignition key rotates to Accessory or Off while transmission in Drive without mechanical resistance; Engine stops without warning when key contacted; Transmission remains in Drive when engine dies; No transmission-to-ignition mechanical safety interlock
Repairs/costs cited: No repair mentioned; feature noted as design defect
Catastrophic Electrical System Failure
Complete loss of all electrical power while driving, including steering assist, engine power, power brakes, and headlights. Vehicle described by dealer as experiencing an 'electrical seizure.' Steering wheel becomes immovable and vehicle cannot shift gears.
When: While driving on city street; no prior warning; occurs suddenly
Symptoms owners cite: Complete loss of engine power while driving; Loss of power steering assist; Loss of power braking; Loss of all headlights and interior/exterior lighting; Vehicle unable to shift out of Drive; Multiple warning lights and alarms activate; Vehicle comes to stop in middle of road
Repairs/costs cited: Dealer rebooted vehicle computer and reinstalled software to restore operation; no permanent repair or component replacement documented
Steering System Corrosion - Salt Belt States
Internal steering rack corrosion suspected to result from road salt ingress, despite two separate recall repairs for external corrosion addressing bolt attachment and exterior sealing. Owner questions whether internal corrosion is adequately addressed by external seal recalls.
When: 26,000 miles; vehicle operated in Northeast Ohio with road salt exposure
Symptoms owners cite: Steering not smooth; hangs up intermittently; Difficult to maintain control of vehicle; Steering system hangs up at low speeds (26,000 miles on vehicle)
Repairs/costs cited: Dealer diagnosed as 'internal' steering rack issue
Recalls/TSBs owners mention: Two recalls completed for corrosion (2015 and 2018) for vehicles in salt states; however, owner questions whether recalls adequately prevent internal corrosion
Steering Wheel Bolt Fracture and Separation Risk
Steering wheel bolts fracture, creating risk of steering wheel detachment or separation. One complaint mentions popping noise consistent with known steering wheel bolt recall defects.
When: Mileage and timing variable
Symptoms owners cite: Popping noise in steering wheel; Steering wheel bolts fractured (confirmed by dealer diagnostics)
Repairs/costs cited: Steering wheel bolt replacement mentioned in recall 18V167000 / 18S08
Recalls/TSBs owners mention: Recalls 18V167000 and 18S08 address steering wheel bolt defects; however, some owners report recalls expired and manufacturer refusing repair
Synthesized from 177 NHTSA owner complaints — unverified consumer
allegations, summarized for patterns. The verbatim filings appear below.