2013 INFINITI JX35

Typical onset: 80,000-130,000 mi

Symptoms: Shuddering or jerking during acceleration, especially 15-40 mph, Whining or grinding noise from transmission, Coolant mixing with CVT fluid (strawberry milkshake appearance), Check engine light with transmission temp codes (P0868, P17F0), Engine overheating or coolant loss with no external leaks

Fix: CVT replacement required, often with engine internal damage from coolant intrusion through failed radiator cooler. Full job: remove CVT (8-12 hrs), flush cooling system, inspect engine for coolant contamination damage. If coolant entered engine oil via cooler failure, expect piston/bearing damage requiring short block or full rebuild (add 25-35 hrs). External CVT cooler bypass strongly recommended to prevent recurrence (2 hrs).

Estimated cost: $4,500-9,500

Typical onset: 60,000-100,000 mi

Symptoms: Transmission fluid in coolant or coolant in transmission (cross-contamination), Transmission slipping or erratic shifting, Engine overheating, Pink or red tint in coolant reservoir, Sudden CVT failure after coolant system work

Fix: Radiator replacement with integrated cooler (4-6 hrs), complete cooling system flush, CVT fluid flush or replacement depending on contamination level. This is the root cause of most CVT failures on this platform. Install external CVT cooler during repair to prevent future failure (adds 2 hrs). If caught early before major CVT damage, just radiator and fluids.

Estimated cost: $1,200-2,800

Typical onset: 70,000-110,000 mi

Symptoms: Clunking when shifting from Park to Drive or Reverse, Vibration at idle in Drive, Excessive engine movement visible when accelerating, Banging noise over bumps from engine bay

Fix: Front and rear transmission mounts fail due to weight of CVT assembly. Both mounts typically replaced together (3-4 hrs). Requires raising powertrain and support from below. OEM Nissan parts recommended as aftermarket mounts fail quickly.

Estimated cost: $600-1,000

Typical onset: 100,000-150,000 mi

Symptoms: Rattling noise on cold starts from front of engine, Check engine light with cam/crank correlation codes (P0011, P0021), Rough idle or hesitation, Noise disappears after engine warms up initially, then becomes constant

Fix: VQ35 engine requires timing chain, guides, tensioners, and both cam phasers replacement. Front engine work requiring removal of front covers, valve covers (18-24 hrs). Often discovered too late after chain skips and causes valve/piston contact requiring head work (add 15-20 hrs). Preventive replacement recommended around 100k miles on high-mileage oil change intervals.

Estimated cost: $2,200-5,500

Typical onset: 50,000-90,000 mi

Symptoms: Clunking or knocking over bumps from front suspension, Steering wheel pops or clicks when turning at low speed, Uneven tire wear on front tires inside edges, Wandering or loose steering feel

Fix: Upper strut mount bearings wear out, requiring strut mount replacement. Often both sides done simultaneously (2.5-3.5 hrs total). Alignment required after replacement (1 hr). Premium mounts with better bearings recommended over budget parts.

Estimated cost: $500-800

Typical onset: 90,000-140,000 mi

Symptoms: Fuel gauge reading erratically or stuck at one position, Hard starting after sitting overnight, Engine stumbling or dying when fuel level below 1/4 tank, Whining noise from rear of vehicle during acceleration, Check engine light with fuel system lean codes

Fix: Fuel pump assembly replacement requires dropping fuel tank (3-4 hrs). Common for both pump motor and level sender to fail on this chassis. Tank must be near empty for safe removal. OEM Nissan pump assembly recommended as aftermarket units have high failure rate.

Estimated cost: $800-1,400