The 2004 Infiniti G35 represents a pivotal moment for the brand, introducing a new generation of buyers to the silky-smooth performance and luxury associated with Nissan’s flagship division. While celebrated for its responsive inline-six engine and agile handling, the G35 is not without its specific quirks and potential mechanical concerns. Understanding the common 2004 Infiniti G35 problems is essential for current owners and prospective buyers looking at this model year, as it helps ensure a reliable and enjoyable ownership experience.
Mechanical Nuances of the 2004 Infiniti G35
When evaluating the 2004 Infiniti G35 problems, it is important to distinguish between normal break-in noises and genuine mechanical failures. This model year, often considered the inaugural year for the rear-wheel-drive V35 platform in North America, showcased advanced technology for its time. However, the integration of new systems means that specific components require attention as the vehicle ages past its original warranty period.
Electrical System Quirks
One of the more frequently reported 2004 Infiniti G35 problems involves the vehicle's electrical architecture. Owners may encounter issues with the Body Control Module (BCM), which can manifest as intermittent warning lights on the dashboard or erratic behavior of the power windows and door locks. These glitches often stem from faulty solder joints or corrosion within the connector harnesses, a known weakness in early-year models of this generation.
Suspension and Steering Wear
The G35's multi-link rear suspension provides a compliant ride, but the components are susceptible to wear over high mileage. A common complaint regarding the 2004 Infiniti G35 problems is the deterioration of the rear lower control arm bushings. When these rubber components degrade, they can produce a distinct clunking sound over bumps and may lead to uneven tire wear if left unaddressed. Additionally, the steering rack mounts can loosen, causing vague handling feedback that requires periodic tightening.
Engine and Transmission Considerations
Under the hood, the 2004 Infiniti G35 houses the reliable VQ35DE 3.5-liter V6, which produces 280 horsepower. While this powertrain is generally robust, there are specific maintenance points that owners should monitor to avoid premature failure. Sticking to the recommended service intervals is crucial for preventing issues that are often categorized among the 2004 Infiniti G35 problems.
Timing Chain Tensioner: Some vehicles may experience noise from the timing chain area, often described as a rattling sound upon cold start. While not a catastrophic failure, it can be concerning and indicates the tensioner may be weakening.
Oil Consumption: Monitoring oil levels is critical, as some owners report slightly higher than normal oil consumption between changes. This does not necessarily indicate a blown seal, but it requires vigilance to maintain proper lubrication.
Automatic Transmission: The five-speed automatic transmission is generally smooth, but the original transmission fluid and filter should be changed at the factory-recommended intervals to ensure crisp shifting and prevent valve body issues.
Interior Electronics and Comfort Features
Beyond the mechanics, the 2004 Infiniti G35 problems can extend to the sophisticated interior electronics. The Bose audio system is a highlight, but some owners have reported failures in the amplifier or speaker components as the vehicle ages. The climate control system, while effective, features complex wiring behind the dashboard that can occasionally cause the fan to malfunction or switch modes unexpectedly.
