Driving a 2004 Infiniti G35 offers a blend of sporty performance and luxury comfort that remains appealing even today. However, like any vehicle approaching two decades of age, these sedans come with specific maintenance considerations and potential mechanical issues. Understanding the 2004 Infiniti G35 problems is essential for current owners looking to maintain reliability and for prospective buyers assessing the risk of purchasing a used model.
Common Mechanical Issues
The 2004 Infiniti G35, while generally well-regarded, is not without its share of mechanical gremlins. One of the most frequently reported issues involves the automatic transmission. Some owners have experienced harsh shifting, particularly between second and third gears, or a noticeable delay when moving from park to drive. This often points to issues with the transmission control module or low fluid levels, but it can escalate to more serious internal problems if ignored.
Engine and Electrical Quirks
Under the hood, the 3.5-liter V6 engine is robust but not immune to the stresses of time. A few owners have reported issues with the timing chain tensioner, which can lead to a rattling noise upon startup. While this does not always signify immediate failure, it is a warning sign that should not be dismissed. Electrical gremlins are also a known nuisance in this generation, with intermittent failures of windows, locks, or dashboard lights being relatively common.
Suspension and Steering Wear
As a sport sedan, the G35’s handling is one of its key selling points, but this performance comes at a cost to certain components. Over the years, the bushings and struts can wear down, leading to a decline in ride quality and increased road noise. You might notice the car feels looser on the highway or that it dives excessively during hard braking. Replacing worn struts and bushings is a common maintenance task for high-mileage examples of this model.
Steering System Vulnerability
The power steering system in the 2004 G35 is another area prone to wear. A whining noise when turning the wheel, especially at low speeds, often indicates a failing power steering pump or low fluid. In some cases, the steering rack itself can develop leaks, leading to a drop in assist and making the car feel heavier than it should. Regular checks of fluid levels and condition are critical to preventing sudden steering failure.
Interior and Material Degradation
Inside the cabin, the 2004 Infiniti G35 presents a mixed bag. While the initial build quality is high, the materials can degrade over time. The leather upholstery, if not properly maintained, can crack or fade. Additionally, the dashboard and console plastics may develop a hazy, cloudy appearance due to exposure to UV light over the years. This is primarily an aesthetic issue, but it can detract from the overall luxury experience the car was designed to provide.
