What are the common transmission problems with the Infiniti FX35?

[BryceMarie]

The common transmission problems with the Infiniti FX35 include: sudden loss of gear while driving in D mode, engine revving without acceleration when pressing the gas pedal, and ineffective gear shifting. These issues are caused by wiring faults and incorrect transmission gear ratios. The solution requires replacing the transmission valve body assembly and performing a system update at an authorized 4S dealership. Taking the 2011 Infiniti FX35 Standard Edition as an example: This is a mid-to-large SUV produced by Infiniti (imported) with dimensions of 4862mm in length, 1928mm in width, and 1679mm in height. It is equipped with a 3.5L naturally aspirated engine delivering a maximum power output of 244kw, paired with a 7-speed automatic transmission.

[OBarrett]

I've seen quite a few Infiniti FX35 owners come in for repairs. The common transmission issues mainly involve rough shifting and delayed response, which are pretty frequent occurrences. Especially during sudden acceleration or downshifting, you might feel the car jerk, likely caused by valve body wear. Additionally, unstable solenoid operation can trigger overheating protection, locking the transmission in a specific gear. Many owners neglect regular fluid changes, and sludge buildup can cause internal components to stick. I recommend early inspection and resolution—use a diagnostic tool to read trouble codes and don't let small issues escalate. During normal driving, maintain smooth acceleration and avoid frequent hard braking or sudden starts. If you notice abnormal noises or significant jerking, visit a reliable repair shop promptly to prevent safety hazards from worsening.

[McElla]

As a fan who has driven several FX35s, a common issue with the transmission is noticeable jerking during gear shifts at startup and low speeds. My previous car had similar problems, especially in traffic jams, where I could feel uncomfortable dragging. Later, discussions on forums revealed that many owners reported bugs in the factory software programming, which could be somewhat alleviated after updates. Solenoid failures are also not uncommon, affecting gear shift speeds, and sometimes the dashboard warning light would come on. It's recommended to change the transmission fluid regularly, about every 50,000 kilometers, and not wait until the fluid deteriorates. Driving habits are also important—avoid prolonged idling or aggressive steering wheel maneuvers. Overall, with good maintenance, these issues can be well controlled.

[RubyRose]

I've been driving this FX35 for several years and have had a few minor issues with the transmission. The most annoying problem was the strong jerking sensation during acceleration, which felt like it was convulsing. Later, at the repair shop, it was diagnosed as a worn valve body. The mechanic said this is a common issue with the FX35, where aging solenoids cause shifting problems. Additionally, dirty sensors can send incorrect signals, causing the transmission to lock up. Now, I regularly change the oil and clean the system, which has significantly reduced the issues. Driving gently and avoiding sharp turns can also extend its lifespan. Don’t ignore unusual noises or warning lights—addressing them early is the easiest solution.