Understanding the Infiniti CVT Transmission Shudder Problem
Many Infiniti JX35 and QX60 owners have reported concerning transmission behavior characterized by noticeable shuddering or vibration during acceleration. This technical bulletin addresses a known manufacturing issue affecting the continuously variable transmission (CVT) systems in specific model years. The problem typically manifests when:
- Vehicle is in gear (both at low and moderate speeds)
- During acceleration from a stop
- When maintaining consistent highway speeds
Root Cause: Engineering analysis traced the issue to three potential failure points within the transmission system: the valve body assembly, drivechain components, or complete transmission assembly. These components may exhibit premature wear or manufacturing defects leading to improper hydraulic pressure regulation and gear engagement.
Affected Infiniti Models and Model Years
The service campaign specifically targets these luxury crossover SUVs:
- 2013 Infiniti JX35 (early production models with CVT)
- 2014 Infiniti QX60 (formerly JX35, all trim levels)
- 2015 Infiniti QX60 (pre-facelift models)
Note that later model years received updated transmission components and are not included in this campaign. Approximately 78,000 vehicles in North America are estimated to be affected according to NHTSA documentation.
Official Corrective Actions
Infiniti has authorized dealerships to perform these repairs at no cost to owners:
- Diagnostic Procedure: Technicians will first perform a road test and scan for specific trouble codes using CONSULT-III+ diagnostic equipment
- Component Replacement: Depending on diagnostic results, one of these solutions will be implemented:
- Valve body assembly replacement (most common solution)
- Drivechain and sprocket replacement
- Complete transmission assembly replacement (for severe cases)
- Software Update: All repairs include the latest TCM (Transmission Control Module) reprogramming
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Warranty Coverage Details
This service campaign is covered under:
- New Vehicle Limited Warranty (for current owners)
- Infiniti Extended Protection Plan
- Powertrain Warranty extensions
Even if your vehicle is out of the standard warranty period, Infiniti may still cover repairs under this specific campaign. There is no mileage limitation for this particular issue, though documentation suggests coverage may extend up to 10 years from the original in-service date.
Owner Action Steps
If you experience transmission shudder in your Infiniti, follow this process:
- Verify Inclusion: Check your VIN against the campaign database using MotorVero's recall verification tool
- Document Symptoms: Note when and how the shudder occurs (speed, temperature, driving conditions)
- Schedule Service: Contact an authorized Infiniti service center (not independent shops)
- Reference Documents: Provide these details to your service advisor:
- Technical Service Bulletin ITB15-012d
- NHTSA Campaign ID (if available)
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Important Contact Information
Infiniti Customer Service: 800-662-6200 (Monday-Friday, 8am-5pm EST)
NHTSA Vehicle Safety Hotline: 888-327-4236 (Reference Campaign ID)
Emergency Assistance: If your vehicle becomes undriveable, contact Infiniti Roadside Assistance at 800-662-6200
Finding Qualified Service Centers
For proper diagnosis and repair, always use Infiniti-certified technicians. MotorVero maintains an up-to-date directory of:
- Factory-trained Infiniti transmission specialists
- Dealers with proper CVT repair equipment
- Shops stocking genuine Nissan/Infiniti replacement parts
Locate Certified Infiniti Service Centers
Technical Background: Why CVTs Develop Shudder
Continuously variable transmissions operate differently than traditional automatics. The shudder in affected Infinitis stems from:
- Hydraulic Pressure Fluctuations: Worn valve body components fail to maintain consistent line pressure
- Chain Slippage: The drivechain may develop excessive play between the pulleys
- Fluid Degradation: Metal contamination from wear particles alters fluid properties
Unlike conventional transmission problems, CVT issues often develop gradually but accelerate rapidly once certain wear thresholds are crossed.
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Preventative Maintenance Tips
After repair, protect your investment with these practices:
- Fluid Changes: Every 30,000 miles with genuine NS-3 CVT fluid
- Driving Habits: Avoid "shock loading" (sudden acceleration from stops)
- Temperature Management: Allow warm-up in cold climates before heavy acceleration
- Software Updates: Ensure your TCM has the latest calibration
Comparing This Campaign to Other CVT Issues
While this bulletin addresses specific components, other common CVT concerns include:
Issue | Symptoms | Resolution |
---|---|---|
Torque Converter Failure | RPM flare between 25-45 mph | Converter replacement |
Input Shaft Bearing | Whining noise in all gears | Transmission overhaul |
Pulley Wear | Delayed engagement | Complete CVT replacement |
Legal Rights and Additional Resources
As a vehicle owner, you have certain protections:
- Magnuson-Moss Warranty Act: Requires manufacturers to cover defects during warranty period
- State Lemon Laws: May apply if multiple repair attempts fail
- NHTSA Reporting: Always file a complaint if safety concerns exist
For ongoing case tracking, reference these resources:
- NHTSA Campaign ID Number: 15V568000
- Infiniti Customer Affairs Case Log: ITB15-012d
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Frequently Asked Questions
How long does the valve body replacement take?
Most repairs are completed within one business day, though dealers may need to order parts for your specific VIN.
Will this repair completely fix my transmission problems?
When performed correctly, the repair resolves shudder in 92% of cases according to Infiniti's internal data. Some vehicles may require additional follow-up adjustments.
Can I continue driving with transmission shudder?
While not immediately dangerous, prolonged operation with these symptoms can cause secondary damage. Schedule service promptly.
Next Steps for Affected Owners
Don't ignore transmission warning signs. MotorVero's Infiniti specialists can help:
- Verify your VIN's campaign status
- Connect you with top-rated Infiniti technicians
- Provide repair documentation for your records