2018 FORD EXPEDITION

Typical onset: 60,000-120,000 mi

Symptoms: Cold-start rattle that sounds like marbles in a coffee can, lasting 3-10 seconds, Check engine light with cam/crank correlation codes (P0016, P0017, P0018, P0019), Loss of power, rough idle, possible catastrophic failure if timing jumps, Metal debris in oil from disintegrating phasers

Fix: Cam phasers and timing chains require full front engine teardown—remove grille, radiator, AC condenser, pull both heads to access chains properly. Budget 25-35 hours labor. If pistons score or bearings spin from debris, you're looking at short block replacement (40+ hours). Ford extended warranty to 10yr/150k on some, but not all qualify.

Estimated cost: $4,500-7,500 for phasers/chains; $12,000-18,000 for short block

Typical onset: 30,000-80,000 mi

Symptoms: Hard downshifts from 3rd to 2nd, especially when slowing to 15-25 mph, Transmission shudder during light acceleration at 30-50 mph, Delayed engagement into Drive or Reverse when cold, Clunking on 1-2 upshift under moderate throttle

Fix: Ford TSB 19-2132 calls for adaptive learning reset and software flash first (1 hour). If that doesn't hold, fluid flush with Mercon ULV and new filter (2 hours). Persistent cases need internal clutch pack replacement or full rebuild (18-24 hours). Many owners report temporary improvement from flashes that eventually returns.

Estimated cost: $200-400 for flash/fluid; $4,000-6,500 for rebuild

Typical onset: 50,000-90,000 mi

Symptoms: Red transmission fluid puddle under front of vehicle, Low transmission fluid warning light, Visible fluid weeping at cooler line quick-connects near radiator, Burnt transmission smell if fluid gets low enough

Fix: Quick-disconnect fittings at the radiator-mounted cooler crack or O-rings fail. Replacement lines from Ford are redesigned. Remove front bumper cover for access, replace both lines even if only one is leaking. 3-4 hours labor plus fluid refill and relearn procedure.

Estimated cost: $600-1,200

Symptoms: No-start condition, cranks but won't fire, Engine stalls while driving with no warning, Intermittent hard-start after sitting, runs rough then clears, Check engine light with low fuel pressure codes

Fix: Defective Bosch fuel pumps can fail suddenly. Ford recall covers replacement but appointment availability is spotty. In-tank pump replacement requires dropping the fuel tank—4-5 hours labor. If you're not covered by recall and it fails, you're paying out of pocket. Check VIN eligibility at Ford.com.

Estimated cost: $900-1,500 if not recall-covered

Typical onset: 40,000-100,000 mi

Symptoms: Running board stuck in extended or retracted position, Clicking/grinding noise from motor but no movement, One side works, other side doesn't, Water intrusion causes corrosion in motor housing

Fix: Motor assemblies fill with water from road spray, corrode internally. Aftermarket motors are hit-or-miss. OEM motor replacement is 2-3 hours per side including programming. Some techs seal the vent holes with silicone as preventive measure on the new unit.

Estimated cost: $800-1,400 per side

Typical onset: 60,000-110,000 mi

Symptoms: Vibration at highway speed (65-75 mph) that feels like bad tire balance but isn't, Clunk when shifting from Park to Drive, Whining noise from center of vehicle that increases with speed, PTU fluid leak at front output seal

Fix: Power Transfer Unit (PTU) shares fluid with front diff but runs hot. Ford calls for fluid changes every 30k in severe duty but owners manual says 'lifetime fill.' Driveshaft carrier bearing dries out. PTU fluid service is 1.5 hours, driveshaft replacement 3-4 hours. If PTU is damaged internally, you're replacing the whole unit (8-10 hours).

Estimated cost: $250-450 for PTU fluid; $600-1,000 for driveshaft; $2,500-3,800 for PTU replacement