2015 Toyota Highlander Towing Capacity

The 2015 Toyota Highlander can tow between 1,500 and 5,000 pounds, depending on its engine and equipment. When properly equipped with the available V6 engine and factory tow package, the Highlander reaches its maximum 5,000-pound towing capacity, making it a capable choice for families with boats, campers, or utility trailers to pull.

Quick Answer: 2015 Highlander Towing Specs

• Maximum Towing Capacity: 5,000 lbs (V6 with Tow Package)
• Maximum Payload: 1,340 to 1,455 lbs
• Gross Vehicle Weight Rating (GVWR): 6,000 lbs
• Gross Combined Weight Rating (GCWR): 9,980 lbs (V6) / 5,665 lbs (4-Cylinder)
• Curb Weight: 4,134 to 4,508 lbs
• Hitch Receiver Class: Class III (for V6 models)

Tow Ratings by Engine & Drivetrain

The Highlander's towing ability is directly tied to its powertrain configuration. The standard four-cylinder engine is suitable for very light-duty tasks, while the V6 is necessary for more substantial loads. All 2015 Toyota Highlander tow ratings are compliant with the SAE J2807 standard, ensuring a realistic and comparable measure of the vehicle's true capabilities.

Note: Payload capacity can vary significantly based on trim level and optional equipment. Always verify your specific vehicle's ratings on the tire and loading information sticker located on the driver's side door jamb.

Tow Package Contents

To achieve the 5,000-pound maximum tow rating, the 2015 Highlander V6 must be equipped with the factory tow package. This isn't just a hitch receiver; it's a comprehensive suite of upgrades designed to handle the extra stress of towing.

• Heavy-Duty Radiator with Engine Oil Cooler: Helps manage the increased heat generated by the engine under load.
• 200-Watt Fan Coupling: Improves cooling system performance.
• Supplemental Transmission Oil Cooler: This is crucial for preventing the automatic transmission from overheating, which is a common risk when towing.
• 150-Amp Alternator: Provides extra electrical power to support a trailer's lighting and braking systems.
• Pre-wiring for Trailer Connectors: The vehicle comes ready for both 4-pin and 7-pin trailer harness connections, simplifying the process of hooking up trailer lights and electric brakes.

The Highlander does not include an integrated trailer brake controller from the factory. For any trailer equipped with electric brakes (which is most trailers over 2,000 lbs), you will need to purchase and install a quality aftermarket brake controller.

Weight Distribution & WDH Requirements

For any trailer weighing more than 2,000 pounds, Toyota requires the use of a weight-distributing hitch (WDH). A WDH uses spring bars to leverage some of the trailer's tongue weight from the Highlander's rear axle to its front axle and the trailer's axles. This has several key benefits:

• Levels the Vehicle: It prevents the rear of the Highlander from sagging and the front from lifting, which maintains proper headlight aim and front-end steering geometry.
• Improves Stability: By distributing the weight more evenly across all axles, a WDH significantly reduces trailer sway and improves overall handling and braking.

When setting up a WDH, you must properly calculate your tongue weight. A safe tongue weight is typically 9-11% of the total loaded trailer weight. For a 5,000-pound trailer, this means a tongue weight of 450 to 550 pounds pushing down on the hitch.

Real-World Towing Tips for the 2015 Highlander

1. Use Sequential Shift Mode: When towing in hilly terrain, shift the automatic transmission into "S" mode. This allows you to select and hold lower gears, using engine braking to control your speed on descents and preventing the transmission from "hunting" for gears on climbs.
2. Monitor Your Speed: The Highlander is a stable platform, but it's still a unibody crossover. Maintain a safe following distance and avoid excessive speeds. Most trailer tires are only rated for a maximum of 65 mph.
3. Respect the GCWR: Never let the combined weight of your loaded Highlander (including passengers and cargo) and your loaded trailer exceed the 9,980-pound Gross Combined Weight Rating (for V6 models). Exceeding this limit puts dangerous stress on the brakes, transmission, and frame.
4. Check Your Mirrors: If your trailer is wider than the Highlander, consider purchasing extended towing mirrors to ensure you have a clear line of sight.

Common Towing-Related Issues

While generally reliable, the Highlander can experience certain issues if its towing limits are consistently pushed:

• Transmission Strain: Towing heavy loads without the factory tow package's supplemental cooler can lead to premature transmission wear or failure.
• Rear Suspension Sag: Without a WDH, heavy tongue weights can cause the rear springs and shocks to wear out more quickly.
• Accelerated Brake Wear: Even with trailer brakes, the vehicle's own braking system works harder to stop the combined mass. Expect to replace pads and rotors more frequently if you tow often.

By respecting the vehicle's clearly defined limits and using the proper equipment, the 2015 Toyota Highlander serves as a safe and effective towing machine for many common recreational needs.

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