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2016 QX60 CVT Transmission Shudder and Hesitation

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Mike T. · rep 0 · May 25, 3:51 AM · 1 replies · solved · Question

Vehicle: 2016 Infiniti QX60 AWD

My 2016 Infiniti QX60 with about 95,000 miles has recently started acting up. When accelerating from a stop, especially going uphill, I feel a noticeable shudder or hesitation, almost like the transmission is struggling to find the right ratio. It's not a violent jerk, but it's definitely concerning.

I've heard about issues with CVT transmissions in these models, and I'm worried this might be the beginning of a major problem. The fluid was checked at my last service, but I'm not sure if it was ever flushed. Has anyone experienced this with their QX60? What was the fix? Should I be preparing for a full transmission replacement?

I really want to avoid a costly repair, so any insights on common causes or preventative measures would be great. No warning lights are on yet, but the driving experience is definitely degraded.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 3:51 AM

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ClearTheCode admin answer:

The shuddering and hesitation you're experiencing with your 2016 Infiniti QX60's Continuously Variable Transmission (CVT) is a common concern that often points to issues within the transmission itself. Infiniti's CVTs, particularly in earlier models like yours, have been known to exhibit these symptoms as they age.

  1. CVT Fluid Degradation: The most common cause is degraded or incorrect transmission fluid. CVT fluid is crucial for lubrication and cooling, and it also acts as a hydraulic medium for the transmission's operation. Over time, the fluid breaks down, losing its viscosity and ability to transfer power efficiently, leading to shuddering. A fluid flush and replacement with genuine Infiniti NS-2 or NS-3 CVT fluid is often the first step.
  2. Torque Converter Issues: The torque converter can sometimes be a source of shudder, especially if the lock-up clutch is failing to engage or disengage smoothly. This can mimic misfires or transmission slips.
  3. Valve Body Malfunction: The valve body controls the fluid pressure and flow within the CVT. A faulty valve body can lead to incorrect pressure application, causing hesitation and shudder.
  4. Internal CVT Wear: With higher mileage, internal components like the belt and pulleys can wear down, leading to inefficient power transfer and the symptoms you describe. This is a more serious issue that often requires transmission overhaul or replacement. Common OBD codes associated with CVT issues include P0741 (Torque Converter Clutch Stuck Off), P0776 (Pressure Control Solenoid B Performance), or P17F0/P17F1 (CVT judder/shudder related codes).

When to see a shop:

Given the mileage and the nature of the symptoms, it's highly recommended to have your QX60 inspected by an Infiniti specialist or a reputable transmission shop as soon as possible. Ignoring these symptoms can lead to complete transmission failure, which is a very costly repair. A diagnostic scan can reveal specific CVT-related trouble codes. They can assess the fluid condition, check for TSBs (Technical Service Bulletins) related to CVT performance, and recommend the appropriate course of action, whether it's a fluid service, valve body replacement, or a more extensive transmission repair.

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