2023 CHRYSLER PACIFICA HYBRID

Typical onset: 40,000-80,000 mi

Symptoms: Sudden metallic knocking from engine bay, often at idle or light throttle, Oil pressure warning light or low oil pressure on scan tool, Metal shavings in oil filter and pan—engine already toast by this point

Fix: Complete engine replacement or rebuild; rod and main bearings have failed, contaminating oil system. 16-22 hours labor for short-block swap or reman long-block install, plus fluids and ancillaries. Some shops quote used engines to save cost, but careful of unknown history.

Estimated cost: $6,500-11,000

Typical onset: 60,000-100,000 mi

Symptoms: Transmission fluid mixing with coolant (milky or pink radiator fluid), Overheating transmission or engine temp spikes, Slipping shifts or delayed engagement after cooler fails internally

Fix: Replace transmission oil cooler (external unit or internal to radiator depending on build date); flush both coolant and ATF systems completely to prevent cross-contamination damage. 4-6 hours labor including flush procedures. If cooler failed and trans was driven hot, may need additional clutch pack work.

Estimated cost: $1,200-2,800

Typical onset: 70,000-110,000 mi

Symptoms: Hybrid system warning light with reduced power / electric-only range, Battery temperature fault codes (P0AC8, P0AFA common), Loud fan noise or no fan noise when HVAC is running—battery uses cabin cooling loop

Fix: Replace battery cooling fan assembly or coolant pump for high-voltage battery pack. Access requires partial interior trim removal behind third row. 3-5 hours labor; dealer-only part in most cases due to HV system integration.

Estimated cost: $900-1,600

Typical onset: 50,000-90,000 mi

Symptoms: Clunk or thud on hard acceleration or shifting into Drive/Reverse, Excessive engine movement visible from driver seat during throttle blips, Vibration at idle, worse with A/C on

Fix: Replace upper or lower transmission mount (hydraulic-filled design wears faster with hybrid weight). 2-3 hours labor; straightforward job but requires supporting powertrain. OEM mounts recommended—aftermarket versions sag quickly under hybrid mass.

Estimated cost: $400-700

Typical onset: 80,000-130,000 mi

Symptoms: White smoke from exhaust on cold start, sweet coolant smell, Coolant loss with no visible leaks; overheating in stop-and-go traffic, Misfires on multiple cylinders, especially after sitting overnight

Fix: Replace both cylinder head gaskets, resurface heads if warped, new head bolts (TTY). 14-18 hours labor; hybrid system must be properly isolated/locked out per service manual. Often find additional valve cover leaks or timing cover seepage during same job—address while engine is apart.

Estimated cost: $3,500-5,500

Symptoms: Rough running or hesitation under load when engine is primary power source, Check engine light for lean codes (P0171, P0174) with no intake leaks found, Extended crank time before starting, especially after sitting for days (PHEV drivers often go weeks without engine use)

Fix: Replace in-tank fuel filter/sock or entire fuel pump module if filter is integrated. Because PHEVs run on electric frequently, gasoline sits for extended periods causing varnish buildup. 2-3 hours labor; requires dropping fuel tank or accessing via rear seat service panel if equipped.

Estimated cost: $600-1,100