2021 CHRYSLER PACIFICA HYBRID

Typical onset: 60,000-100,000 mi

Symptoms: Excessive oil consumption (1 qt per 1,000 mi or worse), Misfires on cylinders 2, 3, 5, or 6 (the deactivating cylinders), Metal shavings in oil, loss of compression, Sudden loss of power, engine knock, check engine light

Fix: The cylinder deactivation solenoids fail, starving lifters of oil. Lifters collapse, damaging camshaft lobes and rocker arms. By the time symptoms appear, you're often looking at a complete short block or engine rebuild. 25-35 labor hours for short block swap in a Pacifica.

Estimated cost: $8,000-14,000

Typical onset: 50,000-90,000 mi

Symptoms: Transmission fluid mixing with coolant (strawberry milkshake in reservoir), Transmission slipping, delayed engagement, Overheating warnings on dash, Coolant loss with no external leaks

Fix: The internal oil cooler in the radiator fails, allowing coolant and ATF to cross-contaminate. In the hybrid, this destroys the eTransmission's electronics and clutches. Requires radiator, transmission flush or rebuild, and full cooling system flush. On hybrids, trans damage often means replacement unit. 15-20 hours labor if trans survives, 25-30 if it needs replacement.

Estimated cost: $3,500-12,000

Typical onset: 70,000-110,000 mi

Symptoms: Reduced electric range (below 25 miles on full charge), Hybrid system warning lights, Battery temperature faults in scan data, Fan noise absent when charging or driving in EV mode

Fix: The 16 kWh lithium-ion pack has a dedicated cooling fan that fails, causing the BMS to limit charge capacity to protect cells from overheating. Fan assembly is under the second-row seats. 2-3 hours labor to access and replace.

Estimated cost: $800-1,400

Typical onset: 40,000-80,000 mi

Symptoms: Clunking when shifting from Park to Drive or Reverse, Vibration at idle, especially with A/C on, Visible sagging of powertrain when viewed from below, Harsh engagement into gear

Fix: The hybrid eTransmission is 100+ lbs heavier than the conventional unit, accelerating mount wear. Front and side mounts are common failures. Replacement is straightforward but requires supporting the trans. 2-3 hours per mount.

Estimated cost: $400-900

Symptoms: Hard starting after sitting (common in PHEVs with infrequent engine use), Rough idle, stumbling on acceleration, Fuel trim faults, lean codes, Stale fuel smell from exhaust

Fix: Plug-in hybrids often run on stale fuel because owners drive electric-only. The 2021s are prone to fuel filter and injector clogging if gas sits more than 3-4 months. Requires fuel system cleaning, filter replacement, sometimes injector service. 3-5 hours depending on severity.

Estimated cost: $600-1,800

Typical onset: 80,000-120,000 mi

Symptoms: White smoke from exhaust, Coolant loss with no visible leaks, Bubbles in coolant reservoir when running, Overheating under load, oil contamination with coolant

Fix: Usually a secondary failure after an overheating event (often from the oil cooler issue). Both head gaskets typically need replacement. On the 3.6L in a Pacifica, figure 18-22 hours labor due to tight engine bay and HVAC components in the way.

Estimated cost: $3,500-5,500