2006 INFINITI M45

Typical onset: 60,000-120,000 mi

Symptoms: Low oil pressure warning at idle when hot, Ticking/knocking from valve train especially on cold starts, Oil consumption increases suddenly, Check engine light with oil pressure codes P0524 or P0521, Complete engine seizure in severe cases

Fix: The VK45DE uses porous paper gallery gaskets that disintegrate, starving the top end of oil. Requires engine removal, complete tear-down, replacement of all gallery gaskets with updated metal versions, new timing components, and often machine work if bearings are scored. 30-40 labor hours for proper rebuild with updated gaskets.

Estimated cost: $6,000-12,000

Typical onset: 70,000-130,000 mi

Symptoms: Milky or strawberry-colored transmission fluid, Engine coolant level drops without visible leaks, Transmission slipping or delayed engagement, Engine overheating and rough idle, Trans fails to shift properly after coolant intrusion

Fix: The internal transmission cooler in the radiator fails, allowing coolant into the trans and trans fluid into the cooling system. Requires radiator replacement, complete transmission fluid system flush (multiple cycles), external trans cooler installation, and often transmission rebuild if contamination went undetected. If caught early: 8-10 hours. If trans damaged: add 20-25 hours for rebuild.

Estimated cost: $1,500-3,000 early catch, $4,500-7,500 with trans rebuild

Typical onset: 80,000-150,000 mi

Symptoms: Harsh 2-3 or 3-4 shifts, Flare on upshifts (RPM spikes before catching), Slipping in 5th gear on highway, Check engine light with P0745 or P0730 codes, Limp mode activation

Fix: The Jatco RE5R05A develops worn valve body bores and failing pressure control solenoids. Requires transmission removal, valve body replacement or rebuild with updated parts, solenoid pack replacement, and complete fluid service. 12-15 hours labor.

Estimated cost: $2,200-3,800

Typical onset: 60,000-100,000 mi

Symptoms: Clunking from front suspension over bumps, Steering wander and poor highway tracking, Uneven inner tire wear, Vibration through steering wheel at highway speeds, Failed state inspection for play in suspension

Fix: The front lower control arm bushings deteriorate and separate, causing alignment issues and handling problems. Most shops replace the entire control arm assemblies rather than pressing new bushings. Both sides typically need replacement simultaneously. 3-4 hours labor plus alignment.

Estimated cost: $800-1,400

Typical onset: 90,000-140,000 mi

Symptoms: Check engine light with P1084 or P1086 codes, Reduced power and sluggish acceleration, Rough idle especially when cold, Engine runs but feels like it's on 6 cylinders, Increased fuel consumption

Fix: Variable Valve Event and Lift system actuators seize or sensors fail. Requires replacement of actuator motor or position sensors on affected bank. Access requires intake manifold removal. 6-8 hours labor per bank if actuator replacement needed.

Estimated cost: $1,200-2,500

Typical onset: 80,000-140,000 mi

Symptoms: Inaccurate fuel gauge reading (stuck or erratic), Hard starting after sitting overnight, Engine stumble or hesitation under acceleration, Fuel pump whine audible from rear seat area, Stalling when fuel tank below 1/4 full

Fix: The in-tank fuel pump assembly develops failing check valves, worn pump motors, or corroded sending unit contacts. Requires fuel tank drop and complete pump assembly replacement. 4-5 hours labor.

Estimated cost: $800-1,400