The 2009 Infiniti G37 represents a significant moment in the evolution of the sport sedan segment, offering a blend of engaging performance, luxurious appointments, and reliable engineering. Owners often recall the precise steering and the smooth, powerful V6 engine as standout features that defined the driving experience. However, like any complex machine from any specific model year, the 2009 G37 is not without its share of issues that potential buyers and current owners should be aware of.
Overview of the 2009 Model Year
Introduced as a more refined alternative to the sport-focused Nissan 350Z, the 2009 Infiniti G37 marked the brand's commitment to luxury performance. The car was available in both coupe and sedan body styles, sharing its platform and many mechanical components with the Nissan Skyline. This partnership provided a strong mechanical foundation, but it also meant inheriting some of the nuances associated with the donor vehicle. The G37 was powered by a 3.7-liter VQ37VHR V6 engine that produced 332 horsepower, delivering responsive acceleration and a smooth power band that was ahead of its time.
Common Electrical and Infotainment Issues
One of the most frequently reported categories of 2009 Infiniti G37 problems relates to the vehicle's electronics and infotainment system. Owners have encountered issues with the radio head unit, which could fail, reset unexpectedly, or display error messages. The navigation system, if equipped, sometimes experienced glitches or required a reset to function correctly. Furthermore, the dashboard instrumentation cluster has been known to suffer from backlight failures or erratic readings, which can be concerning for drivers relying on critical information.
Power Window and Sensor Malfunctions
Beyond the central infotainment system, smaller electrical components have also been a source of frustration. Power window regulators, particularly on the driver’s side, can fail, causing the window to stop working or operate erratically. Sensors, such as those for the tire pressure monitoring system (TPMS), may also give false alerts or fail to communicate with the vehicle's computer. These issues, while not safety-critical, can diminish the overall ownership experience and require diagnostic time and money to resolve.
Mechanical Reliability and Engine Concerns
While the VQ37VHR engine is generally regarded as robust, there are specific mechanical issues that have surfaced over time. One notable concern involves the rear main seal, which can degrade and lead to oil leaks. This issue often presents as oil dripping from the back of the engine, requiring inspection and potentially a significant repair. Additionally, some owners have reported excessive oil consumption, where the engine burns oil at a rate faster than expected, leading to low oil levels and the need for frequent top-offs.
Suspension and Steering Component Wear
The G37’s sporty handling characteristics are derived from its suspension setup, but the components can wear out faster than one might expect. Control arm bushings, struts, and sway bar links are common wear items that, when deteriorated, lead to noises such as clunks or rattles over bumps. Worn steering components can also introduce play into the steering wheel, reducing the sharp handling feel that the 2009 G37 is celebrated for. Regular inspection of these parts is crucial for maintaining the vehicle's dynamic driving character.
Interior Trim and Material Fatigue The interior of the 2009 Infiniti G37, while stylish, uses a combination of soft-touch plastics and leather-like materials that can degrade over time. Dashboard cracking or fading is a common complaint, particularly in models exposed to high levels of sunlight. Leather seats, if not properly maintained, can develop cracks or lose their supple feel. Noise, vibration, and harshness (NVH) can also be a factor, with road and wind noise becoming more apparent as the vehicle ages or as seals degrade. Maintenance Recommendations for Owners
The interior of the 2009 Infiniti G37, while stylish, uses a combination of soft-touch plastics and leather-like materials that can degrade over time. Dashboard cracking or fading is a common complaint, particularly in models exposed to high levels of sunlight. Leather seats, if not properly maintained, can develop cracks or lose their supple feel. Noise, vibration, and harshness (NVH) can also be a factor, with road and wind noise becoming more apparent as the vehicle ages or as seals degrade.
