2009 INFINITI G37

Introduction: The 2009 INFINITI G37 is a luxury sport coupe and sedan that offers a balance of performance, style, and technology. Available with a 3.7-liter V6 engine mated to a 6-speed manual or 7-speed automatic transmission, the G37 delivers impressive horsepower (330 hp for coupe, 328 hp for sedan) and torque (270 lb-ft for both). Despite its strengths, the G37 has been reported to experience certain issues.

Engine

3.7L V6

• Oil consumption issue: Excessive oil consumption due to worn piston rings or valve stems. Symptoms include low oil levels, blue smoke from the exhaust, and decreased engine performance. Solution: Engine rebuild or replacement. Estimated Cost to Fix: $5,000 - $10,000+
• Intake manifold plenum crack: The plastic intake manifold plenum can crack, causing air leaks and rough engine idling. Solution: Replace intake manifold plenum. Estimated Cost to Fix: $1,000 - $1,500+
• Throttle body position sensor issue: The throttle body position sensor can malfunction, causing erratic engine behavior, stalling, or reduced power. Solution: Replace throttle body position sensor. Estimated Cost to Fix: $200 - $400
• Fuel pump failure: The fuel pump can fail, leading to engine stalling or difficulty starting. Solution: Replace fuel pump. Estimated Cost to Fix: $500 - $1,000+
• Variable valve timing solenoid issue: Faulty variable valve timing solenoids can cause engine performance issues, rough idling, and reduced fuel economy. Solution: Replace variable valve timing solenoids. Estimated Cost to Fix: $250 - $500

Transmission

7-Speed Automatic

• Harsh shifting: Transmission may exhibit harsh or delayed shifting, especially during gear changes. Solution: Transmission fluid change, software update, or transmission overhaul. Estimated Cost to Fix: $200 - $2,000+
• Slipping gears: Transmission may slip or fail to engage gears properly. Solution: Transmission overhaul or replacement. Estimated Cost to Fix: $2,500 - $5,000+
• Transmission control module failure: The transmission control module can malfunction, causing shifting problems or transmission failure. Solution: Replace transmission control module. Estimated Cost to Fix: $500 - $1,000
• Torque converter shudder: The torque converter may shudder or vibrate during gear changes. Solution: Replace torque converter. Estimated Cost to Fix: $800 - $1,200+
• Differential bearing failure: The differential bearings can fail, causing noise or vibration from the rear of the vehicle. Solution: Replace differential bearings. Estimated Cost to Fix: $500 - $1,000+

Suspension

• Front lower control arm bushings: Worn front lower control arm bushings can cause clunking noises and poor handling. Solution: Replace control arm bushings. Estimated Cost to Fix: $200 - $400+
• Rear trailing arm bushings: Worn rear trailing arm bushings can lead to rear suspension instability and noise. Solution: Replace trailing arm bushings. Estimated Cost to Fix: $250 - $500+
• Shock absorber failure: Worn or damaged shock absorbers can affect handling and ride quality. Solution: Replace shock absorbers. Estimated Cost to Fix: $500 - $800+
• Strut mount bearing failure: Failed strut mount bearings can cause noise and vibration during suspension travel. Solution: Replace strut mount bearings. Estimated Cost to Fix: $200 - $400+
• Sway bar link failure: Worn or broken sway bar links can compromise handling and stability. Solution: Replace sway bar links. Estimated Cost to Fix: $100 - $200+

Electrical

• Battery drain issue: The vehicle may experience excessive battery drain when parked. Solution: Diagnose and repair electrical components causing the drain. Estimated Cost to Fix: Variable, depending on the source of the drain
• Alternator failure: The alternator may fail, leading to charging system issues and battery discharge. Solution: Replace alternator. Estimated Cost to Fix: $500 - $800+
• Starter failure: The starter may malfunction, causing difficulty starting the vehicle. Solution: Replace starter. Estimated Cost to Fix: $200 - $500+
• Electrical short in wiring harness: Faulty wiring harness can cause electrical issues, including blown fuses or intermittent component failures. Solution: Repair or replace affected wiring. Estimated Cost to Fix: Variable, depending on the extent of damage
• Power window motor failure: Power window motors can fail, affecting window operation. Solution: Replace power window motor. Estimated Cost to Fix: $200 - $400+

Exterior

• Door lock actuator issues: Door lock actuators may malfunction, preventing doors from locking or unlocking. Solution: Replace door lock actuators. Estimated Cost to Fix: $200 - $400+
• Headlight condensation: Condensation may form inside the headlight assemblies during wet weather conditions. Solution: Replace headlight assemblies. Estimated Cost to Fix: $500 - $1,000+
• Sunroof drain blockage: Sunroof drains can become clogged, leading to water leaks into the cabin. Solution: Clean and unclog sunroof drains. Estimated Cost to Fix: $100 - $200

Interior

• Navigation system screen issues: Navigation system screen may experience glitches, unresponsive touch, or display failures. Solution: Software update or screen replacement. Estimated Cost to Fix: $200 - $1,000+
• Airbag light issue: Airbag light may illuminate due to sensor or electrical faults. Solution: Diagnose and repair faulty components. Estimated Cost to Fix: $200 - $500+
• Climate control issues: Climate control system may malfunction, causing temperature control problems or fan failure. Solution: Diagnose and repair affected components. Estimated Cost to Fix: $200 - $600+

Summary: The 2009 INFINITI G37 is a generally reliable luxury vehicle, but it is not without its issues. The most significant problems reported are related to oil consumption, transmission issues, and electrical concerns. Engine issues can be expensive to repair, while transmission and suspension problems can also be costly. Overall, the cost of repairs can vary widely depending on the severity of the issue and the location of the repair.