Safety Warning
- Do not continue driving if transmission fluid level is low - risk of complete transmission failure
- CVT transmission failure can cause sudden loss of power or unexpected behavior
- Check fluid level frequently and top off only with genuine Nissan CVT fluid NS-3 if needed
Quick Diagnosis Summary
If you're experiencing transmission problems with your 2019 Nissan Murano, you're not alone. The Continuously Variable Transmission (CVT) in this model year has known issues that can lead to complete transmission failure. Understanding the warning signs, causes, and repair options can help you make informed decisions about addressing this serious mechanical problem.
Common Symptoms of CVT Transmission Failure
Recognizing the early warning signs of CVT transmission failure can help prevent complete breakdown and potentially save you money. Here are the key symptoms to watch for:
- Whining or grinding noises: High-pitched whining sounds, especially during acceleration or when the CVT is changing ratios
- Transmission fluid leaks: Red or brown fluid puddles under your vehicle, particularly after parking
- Jerky or hesitant acceleration: The vehicle may hesitate, jerk, or shudder when accelerating from a stop
- Loss of power: Sudden loss of acceleration or the engine revving without corresponding vehicle movement
- Dashboard warning lights: Check engine light or transmission warning lights illuminating
- Burning smell: A distinct burning odor from overheated transmission fluid
- Slipping sensation: The engine RPMs increase without a corresponding increase in vehicle speed
Primary Causes of 2019 Murano CVT Failure
CVT Belt/Chain Wear (Most Common)
The 2019 Nissan Murano's CVT system uses a steel belt or chain that connects the variable pulleys. This component is particularly prone to wear due to design limitations and manufacturing tolerances. When the belt or chain stretches, wears, or breaks, it creates the characteristic whining noise and can cause fluid leaks due to increased internal pressure and vibration. This issue typically requires complete transmission replacement, as the internal damage is usually extensive by the time symptoms appear.
CVT Valve Body Failure
The valve body controls hydraulic pressure throughout the transmission, directing fluid flow to operate the CVT system. Internal valve body components, including solenoids and pressure regulators, can fail due to contaminated fluid, wear, or manufacturing defects. When the valve body fails, it disrupts fluid pressure, leading to erratic operation, fluid leaks from damaged seals, and the whining sounds caused by improper CVT operation.
Transmission Cooler Line Problems
The CVT relies on cooler lines to maintain proper operating temperature. These lines can develop leaks due to corrosion, road debris damage, or connection failures. While cooler line leaks might seem minor, they often occur alongside internal CVT wear, suggesting that multiple transmission components are failing simultaneously. The combination of external leaks and internal whining noises typically indicates widespread transmission problems.
CVT Pump Failure
The internal hydraulic pump maintains the pressure necessary for CVT operation. Pump failure usually occurs as a secondary problem when other CVT components have already been damaged. A failing pump creates pressure loss, leading to seal failures, fluid leaks, and the characteristic whining noise from improper CVT belt/chain operation.
Professional Diagnosis Process
Diagnosing CVT transmission failure requires specialized equipment and expertise. Here's what a professional diagnostic process typically involves:
Initial Assessment
- Visual inspection for fluid leaks and external damage
- Check transmission fluid level and condition
- Road test to reproduce symptoms
- Review any stored diagnostic trouble codes
Advanced Testing
- CVT pressure testing to evaluate internal hydraulic systems
- Transmission scan tool analysis for real-time data
- Internal inspection if transmission removal is necessary
- Cooler system pressure testing
Repair Options and Considerations
Complete CVT Replacement
For most 2019 Murano CVT failures, complete transmission replacement is the most reliable solution. This involves installing either a new or professionally remanufactured CVT unit. While expensive, this option provides the best long-term reliability and typically comes with a warranty.
Internal Repair
In some cases, specific internal components like the valve body can be repaired or replaced. However, this approach is often not cost-effective for the 2019 Murano's CVT, as other components frequently fail shortly after partial repairs.
Why DIY Repair Isn't Feasible
CVT transmission repair requires specialized tools, clean room conditions, and extensive technical knowledge. The complexity of the CVT system, combined with the precision required for proper assembly, makes this strictly a professional-only repair. Attempting DIY repair will likely result in further damage and void any remaining warranty coverage.
Cost Breakdown and Expectations
Understanding the financial impact of CVT transmission failure helps you plan for this significant repair:
Complete CVT Replacement Costs
- New CVT transmission: $4,500 - $5,500 including labor
- Remanufactured CVT: $3,500 - $4,500 including labor
- Additional costs: Fluid changes, cooler line replacement if needed
Factors Affecting Cost
- Geographic location and local labor rates
- Dealership versus independent shop pricing
- Warranty coverage (some 2019 models may have extended CVT warranty)
- Additional repairs needed for cooler lines or other components
Prevention and Maintenance Tips
While some CVT issues are inherent design problems, proper maintenance can help extend transmission life:
Fluid Maintenance
- Use only genuine Nissan CVT fluid NS-3 - never substitute other fluids
- Follow Nissan's severe service maintenance schedule (every 30,000 miles)
- Check fluid level monthly and address leaks immediately
Driving Habits
- Avoid aggressive acceleration and sudden stops
- Allow the transmission to warm up before demanding full performance
- Don't tow loads exceeding the vehicle's capacity
- Address any transmission symptoms immediately
Regular Inspections
- Have transmission inspected during regular service
- Monitor for early warning signs like whining noises
- Keep records of all transmission service
Safety Warnings and Immediate Actions
Critical Safety Information: If your 2019 Murano shows signs of CVT failure, take immediate action to prevent dangerous situations:
- Do not continue driving if transmission fluid is low - this risks complete transmission failure
- Be aware that CVT failure can cause sudden loss of power or unexpected behavior
- If you must drive, check fluid level frequently and add only genuine Nissan CVT fluid NS-3
- Avoid highway driving and high-demand situations
- Schedule professional diagnosis immediately
Frequently Asked Questions
The 2019 Murano CVT has known reliability issues, with many experiencing problems between 60,000-100,000 miles. However, with proper maintenance using genuine Nissan CVT fluid and following severe service schedules, some units can last longer. The key is addressing any symptoms immediately and maintaining proper fluid levels.
Nissan extended the CVT warranty on many models due to widespread issues. Check with your Nissan dealer about extended warranty coverage, as some 2019 Muranos may be covered up to 84 months or 84,000 miles for CVT problems. Keep all maintenance records as proof of proper care.
No, you should not continue driving with CVT whining noises. This symptom indicates internal wear that will worsen rapidly. Continued driving can lead to complete transmission failure, potentially stranding you and requiring more expensive repairs. Have it diagnosed immediately by a qualified technician.
Use only genuine Nissan CVT Fluid NS-3. This specific fluid is formulated for Nissan's CVT systems and using substitute fluids can cause severe damage. Never use conventional automatic transmission fluid or other CVT fluids from different manufacturers, as this will void your warranty and potentially cause immediate failure.
This depends on your vehicle's overall condition, mileage, and value. If the car is in good condition with lower mileage, CVT replacement may be worthwhile. However, given the 2019 Murano's known CVT issues, many owners choose to trade the vehicle rather than invest $3,500-$5,500 in transmission replacement. Consider getting a professional assessment of your vehicle's total value versus repair costs.
While there may not be official recalls, Nissan has issued Technical Service Bulletins (TSBs) and extended warranties for CVT issues. Check with your local Nissan dealer and the NHTSA website for the most current information on recalls, TSBs, or extended warranty programs that might apply to your specific vehicle.