Understanding the Nissan Altima CVT Whining Noise Issue
Many owners of 2013-2015 Nissan Altima sedans have reported concerning transmission noises, particularly a distinct whining or grinding sound that becomes more noticeable at highway speeds. This technical service bulletin (TSB 15-102) addresses a known manufacturing issue affecting the continuously variable transmission (CVT) in certain 4-cylinder Altima models.
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Key Symptoms of CVT Problems:
- High-pitched whining noise that increases with vehicle speed
- Grinding or rumbling sounds during acceleration
- Noise becomes more pronounced at speeds above 45 mph
- Potential vibration accompanying the audible symptoms
Affected Nissan Altima Models
The transmission noise issue specifically impacts these model years and configurations:
- 2013 Nissan Altima (4-cylinder engine only)
- 2014 Nissan Altima (4-cylinder engine only)
2015 Nissan Altima (4-cylinder engine only)
Note that V6-powered Altimas and all coupe models are not included in this service campaign. The problem stems from potential bearing failures within the CVT assembly or complete transmission malfunctions in some cases.
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Nissan's Official Repair Protocol
Nissan has authorized dealerships to perform the following corrective actions for affected vehicles:
Diagnostic Process:
- Road test to verify noise conditions
- Complete CVT fluid inspection and analysis
- Transmission teardown examination (if needed)
Repair Solutions:
- Replacement of faulty internal components (bearings, pulleys, or chains)
- Complete CVT assembly replacement for severe cases
- Updated software flashing in some instances
Warranty Coverage Information
Nissan is covering all repair costs for this issue under these warranty programs:
- New Vehicle Limited Warranty (for current coverage)
- Powertrain Warranty (5 years/60,000 miles)
- Extended Warranty (if purchased)
Even if your warranty has recently expired, Nissan may offer goodwill repairs for this known issue - always check with your dealer.
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What Altima Owners Should Do
If you're experiencing these symptoms, take these steps immediately:
Action Plan:
- Document when and how the noise occurs (speed, conditions, etc.)
- Contact your preferred Nissan dealer with your VIN ready
- Reference TSB Number: 15-102
- Schedule a diagnostic appointment
For additional assistance, contact:
- Nissan Customer Service: 800-647-7261
- NHTSA Vehicle Safety Hotline: 888-327-4236
Find an Authorized Nissan Dealer Near You
Understanding CVT Transmission Problems
Continuously Variable Transmissions differ significantly from traditional automatics. Their unique design makes them particularly susceptible to certain failure modes:
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Common CVT Failure Points:
- Bearing wear: Causes the characteristic whining noise
- Belt/pulley slippage: Leads to shuddering or jerking
- Fluid degradation: Results in overheating and poor performance
- Valve body issues: Causes erratic shifting patterns
Proper maintenance is crucial for CVT longevity. Nissan recommends more frequent fluid changes for CVT models compared to conventional transmissions.
Preventative Maintenance Tips
To minimize CVT problems in your Altima:
- Follow Nissan's severe service schedule if you drive in stop-and-go traffic
- Use only Nissan NS-3 CVT fluid (aftermarket fluids may cause damage)
- Avoid aggressive acceleration, especially when cold
- Have transmission software updates performed promptly
Related Technical Service Bulletins
Nissan has issued several related bulletins for Altima CVT concerns:
- TSB 16-098 - CVT judder on acceleration
- TSB 17-041 - CVT fluid temperature warning light
- TSB 18-101 - Improved CVT chain design
Check for all active service bulletins for your specific VIN through MotorVero's Service Bulletin Checker.
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