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2017 QX60 CVT Shudder and Maintenance Schedule

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James R. · rep 0 · May 22, 5:09 AM · 1 replies · solved · Question

Vehicle: 2017 Infiniti QX60 AWD

Hi all, I own a 2017 Infiniti QX60 AWD with about 75,000 miles on it. Lately, I've noticed a slight shudder or hesitation when accelerating from a stop, especially when the engine is cold. It's not constant, but it's definitely noticeable and a bit concerning. I've heard mixed things about CVT transmissions and their reliability, especially in older models.

My main question is about the maintenance schedule for the CVT. I've followed the regular service intervals, but I'm not sure if the transmission fluid has ever been changed. Is there a specific mileage or time frame recommended for a CVT fluid change on the 2017 QX60? Could this shudder be related to old fluid, or is it a sign of a more serious problem? Any advice on what I should do next would be really helpful.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:09 AM

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ClearTheCode admin answer:

It's understandable to be concerned about a shudder from your 2017 Infiniti QX60's Continuously Variable Transmission (CVT), especially with 75,000 miles. CVTs, while efficient, do have specific maintenance needs, and symptoms like shuddering can often be related to fluid condition or internal wear.

Here's a breakdown of what you should know:

  1. CVT Fluid Maintenance: Infiniti generally recommends inspecting the CVT fluid every 30,000 miles or 24 months and replacing it every 60,000 miles or 48 months under normal driving conditions. However, for vehicles driven under severe conditions (e.g., heavy towing, frequent stop-and-go traffic, mountainous terrain, or extreme temperatures), the fluid change interval should be shorter, often around 30,000 miles. Given your mileage, if the fluid hasn't been changed, it's overdue.
  2. Causes of Shudder:
    • Degraded Fluid: Old, contaminated, or overheated CVT fluid loses its lubricating and friction properties, leading to belt slip and shuddering.
    • Internal Wear: Over time, components like the drive belt, pulleys, or valve body can wear, causing inconsistent operation.
    • Software Issues: Sometimes, a transmission control module (TCM) software update can resolve minor shifting or engagement issues.
  3. When to See a Shop: You should schedule an appointment with an Infiniti dealership or a reputable transmission specialist as soon as possible. They will be able to:
    • Inspect CVT Fluid: Check the fluid level, condition, and color. They can also look for metal particles.
    • Perform a Diagnostic Scan: Check for any stored trouble codes related to the transmission control module.
    • Test Drive and Evaluate: A technician can assess the shudder and determine its severity and potential cause.
    • Recommend Service: Based on their findings, they might recommend a CVT fluid drain and fill (using only genuine Nissan NS-3 CVT fluid), or further diagnostics if internal wear is suspected. Addressing this promptly can help prevent more costly repairs down the line.
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