The 2008 Infiniti EX35 stands as a pivotal model in the luxury crossover segment, representing Infiniti's bold entry into the mid-size market years before the QX50 became a mainstay. While celebrated for its engaging driving dynamics and sophisticated interior, potential buyers need to look beyond the driving experience to understand the 2008 Infiniti EX35 problems that can arise with this specific model year. Owning this vehicle successfully requires a proactive approach to maintenance and awareness of its specific mechanical nuances.
Common Mechanical Issues and Reliability Concerns
Reliability data for the 2008 model year indicates a generally solid reputation, but specific systems require vigilant attention. The transition to a new generation of luxury crossovers introduced complexities that later models would refine. Owners should be particularly mindful of the following areas that have shown a higher incidence of issues over time.
CVT Transmission Vulnerability
The heart of the EX35's performance is its Continuously Variable Transmission (CVT), a system Infiniti tuned for responsiveness. However, this specific CVT design has been identified as a potential weak point. Reports of transmission hesitation, unexpected surging, and, in more severe cases, complete failure are documented among long-term owners. These issues often manifest under specific stress conditions, such as sustained towing or extreme temperature variations, making regular fluid checks and adherence to the severe service schedule absolutely critical for longevity.
Electrical System and Sensor Malfunctions
As the vehicle ages, the sophisticated electrical architecture can become a source of frustration. The 2008 EX35 is prone to various sensor failures, most notably the camshaft position sensor and the mass air flow sensor. A failing camshaft sensor can trigger the check engine light and lead to significant performance issues, including rough idling and stalling. Similarly, a dirty or failing mass air flow sensor can disrupt the air-fuel mixture, resulting in poor fuel economy and reduced power.
Interior Comfort and Maintenance Challenges
Inside, the EX35 offers a driver-focused cockpit with premium materials. Yet, the very features that provide comfort can also present maintenance challenges over a high-mileage lifespan.
Infotainment System: The navigation and audio interface, while advanced for its time, can experience screen failures or responsiveness issues as capacitors age.
Sunroof Drains: The panoramic moonroof relies on drainage tubes that can become clogged with debris. If neglected, this leads to water leaks that can damage the headliner and A-pillar insulation, creating costly repairs.
Suspension Components: Owners in regions with harsh winters or salted roads should inspect front struts and control arm bushings periodically. Wear in these components can lead to subtle handling changes and increased road noise.
Proactive Maintenance Strategies
Mitigating the risks associated with the 2008 Infiniti EX35 problems hinges on a strict and informed maintenance regimen. Going beyond the standard dealer schedule can save owners significant money down the road.
