The Infiniti EX35’s most frequently reported issues fall into drivetrain/transmission problems, electrical and electronics glitches, and wear- and age-related components. While many EX35s remain reliable with proper maintenance, problems tend to surface as the vehicle accrues miles.
In this article, we detail the common trouble areas, describe typical symptoms, offer likely causes, and provide practical tips for diagnosing, preventing, or addressing these issues. We also include notes on model-year variations and guidance for buying a used EX35.
Drive train and mechanical reliability
This section highlights issues drivers commonly cite with the EX35’s transmission, engine performance, and related components.
- Transmission and shifting problems: Rough or delayed shifts, shuddering, or even transmission failure have been reported, especially as mileage increases. Possible causes include aging transmission fluid, worn solenoids, valve-body wear, or torque-converter issues. Remedies typically start with a comprehensive transmission fluid service and software updates, escalating to more involved repairs if symptoms persist.
- Oil consumption and leaks: Some EX35 engines burn oil more quickly with age, and leaks from valve covers, seals, or the front main seal are commonly reported. Regular monitoring of oil level and timely gasket/seal repairs help prevent low-oil incidents and related engine problems.
- Engine performance and misfires: Rough idle, hesitation, or misfires can stem from ignition components, fuel delivery, or sensors (such as MAF or oxygen sensors). Diagnosis via fault codes and targeted part replacement or cleaning is often effective.
- Timing chain/tensioner and accessory drive wear: Although less common, higher-mileage examples may exhibit timing chain tensioner wear or related noise. Inspection and potential replacement of timing components or drive belts may be required if a problem is detected.
Good maintenance, including appropriate transmission service intervals, using recommended fluids, and prompt attention to any unusual noises or performance changes, is the best defense against these issues.
Electrical, electronics, and interior systems
Electric and electronic systems are a frequent hotspot for EX35 owners, with symptoms ranging from nuisance alerts to inoperative features.
- Electrical faults and warning lights: Faulty sensors, intermittent check engine lights, or other dash warnings can arise from issues with the ABS wheel speed sensors, MAF sensor, or other modules. Diagnosis usually requires a proper OBD scan and component replacement as needed.
- Infotainment, Bluetooth, and navigation: Screen freezes, audio dropouts, or connection problems can occur. These often improve with software updates or, in some cases, replacement of the head unit or related hardware.
- Power window regulators and door hardware: Regulator failure or sluggish operation is a common interior complaint on older EX35s, sometimes requiring replacement of regulators or motors.
- HVAC and climate control: Blower motor, resistor, or actuator failures can lead to inconsistent heating or cooling, requiring component replacement.
Addressing electrical problems early helps prevent cascading failures and keeps cabin comfort reliable. Regular software updates and a careful parts warranty check can also matter for these systems.
Wear, suspension, brakes, and other aging components
As with any aging vehicle, suspension, brake, and related components wear over time and can affect ride quality and safety.
- Suspension wear and handling concerns: Worn bushings, control arm components, and struts can cause clunks, degraded ride quality, or imprecise steering, particularly on rough roads or with high mileage.
- Brake wear and ABS-related issues: Worn brake pads or rotors, along with occasional ABS sensor concerns, can trigger warning lights or affect braking performance if not addressed.
- Rear hatch, latch, and door hardware wear: Struts may weaken, making the liftgate slower to hold open or requiring manual assistance, and latch alignment can occasionally cause frustration.
Routine inspections and timely replacement of worn parts keep the EX35 safe and comfortable to drive, while maintaining proper tire tread and brake performance.
Model-year variations and general notes
While many EX35 issues appear across model years, some concerns are more common in certain periods. The EX35 was produced from 2008 through 2012, with incremental updates over time. Always verify a vehicle’s service history, recall status, and any Technical Service Bulletins (TSBs) that pertain to the specific year and VIN.
2008–2009 models
Early production examples can show teething issues such as minor transmission software quirks or electrical glitches. A thorough pre-purchase inspection and confirmation of any available updates can help mitigate risk on these initial-year examples.
2010–2012 models
Later years benefited from refinements and ongoing campaigns, with typical wear-related concerns thriving at higher mileage. Reliability tends to depend heavily on maintenance history and proactive service rather than year alone.
What to check when buying a used EX35
If you’re evaluating a pre-owned EX35, use the following checklist to assess potential problems and remaining life:
- Request a full service history, especially transmission and engine maintenance, oil changes, and any cooling system work.
- Have a mechanic check for transmission symptoms during a test drive (smooth shifts, no shuddering, no slipping). Ask about any recalls or TSBs and verify that updates have been applied.
- Inspect for oil leaks around valve covers, front main seal, and oil pan; review oil consumption records if available.
- Test electrical features (windows, locks, HVAC, infotainment) for proper operation and check for any dashboard warning lights.
- Inspect the brakes and tires; look for even wear and signs of rotor warping or pad wear.
- Scan the VIN for open recalls and TSBs, including airbags and occupant detection system campaigns, and verify they have been completed.
A pre-purchase inspection by a qualified technician is strongly recommended to uncover issues not obvious in a test drive or a casual check.
Summary
The Infiniti EX35’s most commonly reported problems center on the transmission and drivetrain, electrical systems, and wear-related components. With diligent maintenance, timely repairs, and careful pre-purchase checks, many of these issues can be managed effectively, preserving both performance and reliability. Prospective buyers should review service history, verify recall updates, and seek a thorough mechanical inspection to gauge the vehicle’s long-term viability.