The 2015 Toyota Highlander, a mid-size SUV known for its reliability and family-friendly features, has garnered a strong reputation over the years. However, like any vehicle, it’s not without its potential issues. While generally dependable, certain problems have surfaced more frequently than others among owners. Understanding these common issues can help prospective buyers make informed decisions and current owners address potential problems proactively. This article delves into the most frequently reported issues with the 2015 Toyota Highlander, offering insights into their causes, symptoms, and potential solutions.
Understanding the 2015 Toyota Highlander’s Reputation
Before diving into specific problems, it’s crucial to acknowledge the Highlander’s overall reliability. Toyota, as a brand, is consistently ranked high in dependability surveys, and the Highlander generally follows suit. Many owners report years of trouble-free driving, praising its comfortable ride, spacious interior, and overall build quality. However, even the most reliable vehicles can have common problem areas, and the 2015 Highlander is no exception.
The Most Prevalent Issue: Water Pump Failure
While other problems exist, water pump failure stands out as the most commonly reported and potentially serious issue affecting the 2015 Toyota Highlander, particularly those equipped with the 3.5-liter V6 engine. A failing water pump can lead to significant engine damage if not addressed promptly.
Symptoms of a Failing Water Pump
Recognizing the symptoms of a failing water pump is essential for preventing more extensive damage. Key indicators include:
- Coolant Leaks: Look for puddles of coolant (typically green, pink, or orange) under the vehicle, especially near the front of the engine.
- Overheating Engine: A failing water pump can’t circulate coolant effectively, leading to the engine overheating. The temperature gauge will climb into the red zone, and you might notice steam coming from under the hood.
- Whining Noise: A worn or damaged water pump bearing can produce a high-pitched whining or grinding noise that increases with engine speed.
- Low Coolant Level: Regularly check your coolant level. A consistently low level, even after topping it off, could indicate a leak caused by a failing water pump.
- Visible Damage: Inspect the water pump itself for signs of corrosion, cracks, or leaks. This might require a mechanic’s expertise.
Causes of Water Pump Failure
Several factors can contribute to water pump failure in the 2015 Toyota Highlander:
- Wear and Tear: Over time, the water pump’s internal components, such as the bearings and seals, can wear out due to constant use and exposure to heat and coolant.
- Corrosion: Coolant can become corrosive over time, especially if it’s not replaced according to the manufacturer’s recommended schedule. This corrosion can damage the water pump’s internal components.
- Contamination: Debris and contaminants in the cooling system can also damage the water pump.
- Improper Coolant: Using the wrong type of coolant can lead to corrosion and premature water pump failure.
The Consequences of Ignoring Water Pump Failure
Ignoring the symptoms of a failing water pump can have dire consequences for your engine. If the engine overheats severely, it can cause:
- Cylinder Head Damage: Overheating can warp or crack the cylinder head, requiring expensive repairs or replacement.
- Blown Head Gasket: The head gasket seals the cylinder head to the engine block. Overheating can cause it to fail, leading to coolant leaks, loss of compression, and potential engine damage.
- Engine Seizure: In extreme cases, severe overheating can cause the engine to seize up completely, requiring a full engine replacement.
Prevention and Solutions
Preventing water pump failure involves regular maintenance and prompt attention to any warning signs:
- Regular Coolant Flushes: Follow Toyota’s recommended coolant flush intervals to prevent corrosion and maintain the cooling system’s efficiency.
- Use the Correct Coolant: Always use the specified type of coolant recommended by Toyota.
- Inspect the Water Pump: Have your mechanic inspect the water pump during routine maintenance.
- Replace the Water Pump: If you notice any of the symptoms mentioned above, have the water pump replaced as soon as possible.
Other Notable Problems with the 2015 Highlander
While the water pump is the most frequently reported issue, several other problems have been noted by 2015 Highlander owners. These issues, while less prevalent, are still worth considering.
Transmission Issues
Some owners have reported issues with the 2015 Highlander’s transmission, particularly related to rough shifting or hesitation. These problems are more common at higher mileage.
Symptoms of Transmission Problems
- Rough Shifting: The transmission may shift harshly or jerkily between gears.
- Hesitation: The vehicle may hesitate or delay when accelerating.
- Slipping: The transmission may slip out of gear or fail to engage properly.
- Unusual Noises: Grinding, clunking, or whining noises from the transmission.
- Check Engine Light: The check engine light may illuminate, indicating a transmission problem.
Causes of Transmission Problems
- Low Transmission Fluid: Low fluid levels can cause the transmission to overheat and wear out prematurely.
- Dirty Transmission Fluid: Contaminated fluid can damage the transmission’s internal components.
- Worn Transmission Components: Over time, the transmission’s clutches, gears, and other components can wear out.
- Software Issues: In some cases, transmission problems can be caused by software glitches that require a reprogram.
Solutions for Transmission Problems
- Check Transmission Fluid: Regularly check the transmission fluid level and condition.
- Transmission Fluid Flush: Follow Toyota’s recommended transmission fluid flush intervals.
- Transmission Repair or Replacement: Depending on the severity of the problem, the transmission may need to be repaired or replaced.
- Software Update: Check with your Toyota dealer to see if there are any software updates available for your transmission.
Excessive Oil Consumption
A number of 2015 Highlander owners have reported higher than expected oil consumption. This can be a concerning issue, as it can lead to engine damage if not monitored and addressed.
Symptoms of Excessive Oil Consumption
- Low Oil Level: Needing to add oil frequently between oil changes.
- Blue Exhaust Smoke: Blue smoke from the exhaust can indicate burning oil.
- Oil Leaks: Check for oil leaks around the engine.
- Foul Smell: A burning oil smell can indicate that oil is leaking onto hot engine components.
Causes of Excessive Oil Consumption
- Worn Piston Rings: Worn piston rings can allow oil to leak into the combustion chamber.
- Worn Valve Seals: Worn valve seals can also allow oil to leak into the combustion chamber.
- PCV Valve Issues: A faulty PCV valve can cause increased oil consumption.
- Oil Leaks: External oil leaks can contribute to overall oil loss.
Solutions for Excessive Oil Consumption
- Monitor Oil Level: Regularly check your oil level and add oil as needed.
- PCV Valve Replacement: Replace the PCV valve if it’s faulty.
- Oil Leak Repair: Repair any oil leaks promptly.
- Engine Repair: In some cases, engine repairs may be necessary to address worn piston rings or valve seals.
Electrical Issues
While less common than the other problems, some 2015 Highlander owners have reported experiencing various electrical issues, which can range from minor inconveniences to more serious problems.
Examples of Electrical Issues
- Battery Drain: Premature battery drain can leave you stranded.
- Malfunctioning Sensors: Faulty sensors can affect various systems, such as the engine, transmission, and brakes.
- Problems with the Infotainment System: Issues with the touchscreen, audio system, or navigation.
- Power Window or Door Lock Problems: Malfunctioning power windows or door locks.
Troubleshooting Electrical Issues
- Check the Battery: Have the battery tested to ensure it’s in good condition.
- Check Fuses and Relays: Inspect the fuses and relays for any signs of damage or corrosion.
- Scan for Diagnostic Trouble Codes: Use an OBD-II scanner to check for any diagnostic trouble codes.
- Professional Diagnosis: If you’re unable to identify the cause of the electrical issue, take your Highlander to a qualified mechanic for diagnosis and repair.
Addressing Concerns and Finding Solutions
It’s important to remember that not every 2015 Toyota Highlander will experience these problems. However, being aware of these potential issues can help you stay proactive with maintenance and repairs.
If you’re considering purchasing a used 2015 Highlander, it’s highly recommended to have a pre-purchase inspection performed by a qualified mechanic. This inspection can help identify any existing problems and give you a better understanding of the vehicle’s overall condition.
Regular maintenance, including oil changes, coolant flushes, and transmission fluid flushes, is essential for keeping your 2015 Highlander running smoothly and preventing major problems. By staying on top of maintenance and addressing any issues promptly, you can enjoy many years of reliable service from your Highlander.
If you encounter any of the problems mentioned in this article, it’s best to consult with a qualified mechanic. They can properly diagnose the issue and recommend the appropriate repairs.
The Bottom Line: Is the 2015 Toyota Highlander a Good Choice?
Despite the potential problems discussed, the 2015 Toyota Highlander remains a popular and generally reliable mid-size SUV. Its spacious interior, comfortable ride, and strong reputation for dependability make it a compelling choice for families. By being aware of the common problems and taking proactive steps to prevent and address them, you can minimize the risk of experiencing these issues and enjoy a positive ownership experience.
What is the most frequently reported problem with the 2015 Toyota Highlander?
One of the most common issues reported by owners of the 2015 Toyota Highlander is excessive oil consumption. Many drivers have noticed that their Highlander requires frequent oil top-ups between scheduled oil changes, sometimes needing a quart of oil every 1,000 miles or even less. This issue can be particularly concerning, as neglecting to monitor and replenish the oil level can lead to engine damage.
The excessive oil consumption is often attributed to issues with the piston rings, which may not be sealing correctly, allowing oil to seep into the combustion chamber and burn. While Toyota hasn’t issued a widespread recall for this specific problem on the 2015 Highlander, it’s essential to regularly check the oil level and consult a mechanic if you suspect excessive consumption. Addressing the problem promptly can potentially prevent more significant engine repairs down the line.
Does the 2015 Toyota Highlander have issues with its navigation or infotainment system?
Yes, some owners of the 2015 Toyota Highlander have experienced glitches and unresponsiveness within the navigation and infotainment systems. These issues range from slow response times and frozen screens to inaccurate GPS positioning and difficulties connecting to Bluetooth devices. These problems can be frustrating for drivers who rely on these systems for navigation, entertainment, and communication while on the road.
While not universally experienced, the reported problems with the infotainment system suggest potential software or hardware issues. Some users have found temporary relief by resetting the system or updating the software. However, in more severe cases, professional diagnosis and repair may be necessary to address the underlying cause of the malfunction and ensure optimal functionality of the navigation and infotainment features.
Are there any known issues with the 2015 Toyota Highlander’s transmission?
While not as prevalent as some other issues, a number of 2015 Toyota Highlander owners have reported experiencing problems with the vehicle’s transmission. These problems manifest as rough shifting, hesitation during acceleration, and in some cases, slipping gears. Such issues can negatively impact the driving experience and potentially lead to more serious transmission damage if left unaddressed.
The transmission issues in the 2015 Highlander can stem from various factors, including worn-out transmission fluid, malfunctioning sensors, or internal mechanical failures within the transmission itself. Regular transmission fluid changes are crucial for maintaining optimal performance and preventing potential problems. If you notice any unusual shifting behavior, it’s advisable to consult a qualified mechanic for a thorough inspection and diagnosis to determine the appropriate course of action.
Has the 2015 Toyota Highlander had any recalls related to safety concerns?
Yes, the 2015 Toyota Highlander has been subject to recalls related to safety concerns. These recalls address potential issues that could compromise the safety of the vehicle and its occupants. One notable recall involved the front passenger airbag, where a manufacturing defect could prevent proper deployment in a collision. This could significantly increase the risk of injury in an accident.
It’s important to check if your specific 2015 Toyota Highlander is affected by any outstanding recalls. You can do this by visiting the National Highway Traffic Safety Administration (NHTSA) website or contacting your local Toyota dealership with your vehicle identification number (VIN). Addressing any open recalls promptly is crucial to ensuring the safety and reliability of your vehicle.
Are there any issues reported with the 2015 Toyota Highlander’s paint or exterior finish?
Some owners of the 2015 Toyota Highlander have reported issues with the paint quality and durability of the exterior finish. Complaints include premature chipping, peeling, and fading of the paint, particularly on horizontal surfaces exposed to direct sunlight and harsh weather conditions. This can detract from the vehicle’s appearance and potentially lead to rust formation if the exposed metal is not protected.
While not a widespread issue affecting all 2015 Highlanders, the reported paint problems suggest potential vulnerabilities in the factory paint application process. Factors such as environmental conditions, cleaning practices, and the specific paint color can also contribute to paint degradation. Regular washing, waxing, and protective coatings can help mitigate the risk of paint damage and preserve the vehicle’s exterior appearance.
Do 2015 Toyota Highlanders have issues with the power liftgate functionality?
Yes, several owners have reported problems with the power liftgate on the 2015 Toyota Highlander. These issues range from the liftgate failing to open or close properly to intermittent malfunctions and unusual noises during operation. In some cases, the liftgate may stop mid-cycle or refuse to respond to the remote, button, or manual operation.
The power liftgate problems can be caused by various factors, including faulty sensors, a malfunctioning motor, or issues with the hydraulic struts that support the liftgate. Diagnosing the specific cause of the malfunction typically requires professional inspection and testing. Replacement of the affected components may be necessary to restore the liftgate’s functionality and ensure smooth and reliable operation.
Are there any common electrical problems reported in the 2015 Toyota Highlander?
While not exceedingly common, some owners of the 2015 Toyota Highlander have experienced minor electrical issues. These issues can manifest as problems with interior lighting, power windows, or the vehicle’s key fob. Some drivers have also reported occasional glitches with the vehicle’s various electronic systems, requiring a restart to resolve the issue.
Electrical problems in a vehicle can stem from a variety of sources, including faulty wiring, corroded connections, or malfunctioning sensors. It is important to have a qualified technician diagnose the specific source of the problem to perform the proper repairs. Ignoring seemingly minor electrical issues can potentially lead to more significant problems down the road, so it is best to address them promptly.