2013 Nissan Murano Transmission Problems

The 2013 Nissan Murano, while generally a reliable vehicle, is known to experience transmission issues, particularly related to its Continuously Variable Transmission (CVT). Understanding these problems, their symptoms, and potential solutions is crucial for both car owners and mechanics to ensure the longevity and performance of this popular SUV.

Understanding the CVT in the 2013 Murano

Unlike traditional automatic transmissions with fixed gear ratios, the Murano's CVT uses a belt and pulley system to provide a seamless and continuous range of gear ratios. This design is intended to improve fuel efficiency and provide smoother acceleration. However, this design can be more sensitive to maintenance and operating conditions, leading to some common problems.

Common Symptoms of Transmission Problems

Recognizing the symptoms of a failing transmission early can save you from costly repairs. Some common symptoms experienced by 2013 Murano owners include:

Slipping or Hesitation During Acceleration: The engine revs up, but the vehicle doesn't accelerate as expected. This is a common sign of CVT belt slippage.
Shuddering or Jerking: Instead of smooth acceleration, the vehicle experiences noticeable jerks or shudders, especially at lower speeds.
Unusual Noises: Whining, humming, or clunking noises coming from the transmission area, particularly during acceleration or deceleration.
Delayed Engagement: A noticeable delay between shifting into drive or reverse and the vehicle actually moving.
Difficulty Shifting: Problems shifting between gears (if equipped with manual shift mode) or a general feeling of sluggishness.
Check Engine Light: The check engine light illuminates, often accompanied by transmission-related diagnostic trouble codes (DTCs).
Overheating: The transmission overheats, potentially causing damage to internal components. This can be indicated by a burning smell.
Transmission Fluid Leaks: Visible leaks of reddish-brown transmission fluid under the vehicle.

Troubleshooting Transmission Issues: A Step-by-Step Approach

When faced with transmission problems, a systematic approach to troubleshooting is essential. Here's a breakdown of the process:

1. Initial Inspection and Fluid Check

Start by visually inspecting the transmission for any signs of leaks. Check the transmission fluid level using the dipstick (if equipped). The fluid should be at the appropriate level and have a bright reddish-pink color. Dark, burnt-smelling fluid indicates a problem. For example, in some Honda Accords with similar CVT issues, burnt fluid is often the first indication of impending transmission failure.

Solution: If the fluid is low, add the correct type of Nissan CVT fluid (NS-2 or NS-3 depending on the model year and specific transmission). If the fluid is dirty or burnt, a transmission fluid flush is recommended. However, be aware that flushing a severely damaged transmission can sometimes worsen the problem.

2. Diagnostic Trouble Code (DTC) Retrieval

Use an OBD-II scanner to retrieve any stored DTCs. Common transmission-related codes for the 2013 Murano include P0744 (Torque Converter Clutch Circuit Intermittent), P0776 (Pressure Control Solenoid "B" Performance or Stuck Off), and codes related to CVT ratio errors. Understanding the codes is crucial for pinpointing the source of the problem. Similar to Ford Focus models with PowerShift transmissions, specific error codes often indicate specific component failures.

Solution: Research the meaning of each DTC and consult a repair manual or online resources for troubleshooting guidance. For example, a P0776 code may indicate a faulty pressure control solenoid that needs to be replaced.

3. Sensor and Solenoid Testing

If DTCs point to specific sensors or solenoids, use a multimeter to test their resistance and voltage. This can help determine if a sensor or solenoid is faulty and needs to be replaced. Many mechanics use similar techniques to diagnose sensor failures in Toyota Camry automatic transmissions.

Solution: Replace any faulty sensors or solenoids. Ensure that the replacement parts are compatible with the 2013 Murano's transmission.

4. Valve Body Inspection and Cleaning

The valve body is a complex hydraulic control unit that regulates the flow of transmission fluid to various components. Over time, debris and contaminants can clog the valve body, causing shifting problems. Some mechanics recommend removing and cleaning the valve body. However, this is a complex procedure that should only be performed by experienced technicians.

Solution: Carefully inspect the valve body for any signs of damage or contamination. Clean the valve body with a solvent specifically designed for transmission components. Consider replacing the valve body if it is severely damaged or worn.

5. CVT Belt Inspection (Requires Transmission Disassembly)

If the above steps don't resolve the problem, the CVT belt may be worn or damaged. Inspecting the belt requires disassembling the transmission, which is a complex and time-consuming process that should only be performed by qualified technicians. This is analogous to inspecting the clutch plates in a manual transmission, where wear is a primary concern.

Solution: If the CVT belt is worn or damaged, it must be replaced. Replacing the belt often requires replacing other components, such as the pulleys and bearings. In many cases, replacing the entire transmission assembly might be more cost-effective than rebuilding the CVT.

Real-World Issues and Solutions

Here are some specific scenarios and corresponding solutions based on experiences shared by 2013 Murano owners:

Issue: "My Murano shudders badly when accelerating from a stop."
Possible Cause: Worn CVT belt or internal damage to the CVT.

Solution: First, perform a transmission fluid flush. If the problem persists, a CVT belt replacement or a complete transmission replacement is likely necessary.
Issue: "The check engine light is on, and the code is P0744."
Possible Cause: Faulty torque converter clutch solenoid or wiring issue.

Solution: Inspect the wiring and connectors related to the torque converter clutch solenoid. If the wiring is intact, replace the torque converter clutch solenoid.
Issue: "The transmission is overheating, and there's a burning smell."
Possible Cause: Low transmission fluid level, clogged transmission cooler, or internal transmission damage.

Solution: Check the transmission fluid level and add fluid if necessary. Inspect the transmission cooler for any blockages and clean it if needed. If the problem persists, the transmission may need to be rebuilt or replaced.

Preventative Maintenance: Keeping Your Murano in Top Condition

Preventative maintenance is key to extending the life of your 2013 Murano's transmission. Here are some tips:

Regular Transmission Fluid Changes: Follow Nissan's recommended maintenance schedule for transmission fluid changes. Use only the correct type of Nissan CVT fluid (NS-2 or NS-3). Don't skip this service! It's significantly cheaper than a new transmission.
Avoid Aggressive Driving: Aggressive acceleration and hard braking can put excessive strain on the transmission. Drive smoothly and avoid abrupt maneuvers.
Don't Tow Heavy Loads: The 2013 Murano is not designed for heavy towing. Exceeding the vehicle's towing capacity can damage the transmission.
Monitor Transmission Temperature: If possible, monitor the transmission temperature, especially during hot weather or when driving in stop-and-go traffic. Overheating can damage the transmission.
Address Problems Promptly: If you notice any signs of transmission problems, address them promptly. Ignoring the problem can lead to more serious and costly repairs down the road.

By understanding the potential transmission problems associated with the 2013 Nissan Murano, performing regular maintenance, and addressing issues promptly, both car owners and mechanics can ensure the long-term reliability and performance of this vehicle. Always consult a qualified mechanic for complex repairs and diagnostics. Ignoring even seemingly minor symptoms can lead to catastrophic failure, resulting in a much more expensive repair or even a complete transmission replacement. Proper maintenance and proactive troubleshooting are essential. Remember to use genuine Nissan parts and fluids whenever possible, as aftermarket components may not meet the stringent requirements of the CVT system. This advice echoes across many vehicle platforms - using the manufacturer's recommended fluids and parts is almost always the safest bet.