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What is the most common problem with the 2015 Toyota Highlander?

The most common problem reported with the 2015 Toyota Highlander is issues with the transmission. Many owners have experienced transmission slippage, delayed gear engagement, and even complete transmission failure in some cases.

Transmission Problems in the 2015 Toyota Highlander

The 2015 Toyota Highlander was equipped with a 6-speed automatic transmission, and a significant number of owners have reported problems with this transmission. The most common issues include:

Transmission Slippage: Owners have reported that the transmission slips or hesitates when accelerating, particularly when the vehicle is under load or climbing hills.

Delayed Gear Engagement: Some owners have experienced a delay in the transmission engaging the correct gear, leading to a loss of power and a jerky driving experience.

Transmission Failure: In more severe cases, the transmission has failed completely, requiring a costly repair or replacement.

These transmission problems can be frustrating and potentially dangerous, as they can affect the vehicle's drivability and performance.

Causes and Solutions

The transmission issues in the 2015 Toyota Highlander are believed to be caused by a variety of factors, including:

Faulty Transmission Components: Some of the internal components within the transmission, such as the torque converter or gear sets, may be defective or wear out prematurely.

Transmission Fluid Issues: Problems with the transmission fluid, such as low levels or contamination, can contribute to the transmission problems.

Software Glitches: In some cases, the transmission's control software may be the root cause of the issues, leading to improper gear shifting and other problems.

To address these issues, Toyota has issued several technical service bulletins and recalls related to the 2015 Highlander's transmission. Owners may be able to have their vehicle's transmission repaired or replaced under warranty, depending on the specific problem and the vehicle's mileage.

In addition, some owners have reported success in resolving transmission issues by having the transmission fluid flushed and replaced, or by having the transmission's control module reprogrammed by a Toyota dealer.

What problems do 2015 Toyota Highlanders have?

Owner Reported Trouble Spots

Exhaust. Muffler, pipes, catalytic converter, exhaust manifold, heat shields, leaks.
In-car Electronics.
Noises/Leaks.
Paint/Trim.
Brakes.
Electrical Accessories.
Suspension/Steering.
Body Hardware.

Is 2015 a good year for a Toyota Highlander?

The 2015 Toyota Highlander is generally considered a good SUV, especially for its comfort, practicality, and features, but it has some potential issues and is listed by some sources as a year to avoid. Key concerns include some reported electrical problems, such as with Bluetooth connectivity, and a risk of major issues that can arise with some earlier model years.
You can watch this video to learn about Toyota Highlander years to avoid and the best model years to keep: 59sCar MavenYouTube · Feb 16, 2025
Positive aspects

Practicality: It's a spacious and comfortable SUV with ample room for passengers and cargo.
Driving experience: Many owners find it easy to drive and maneuver, and it provides a good ride.
Features: It comes with a variety of features depending on the trim, and it's considered a safe choice.

Potential drawbacks

Electrical issues: Some owners have reported problems with the infotainment system, such as Bluetooth connectivity issues that cause echoes or dropped calls.
General issues: Some lists of "years to avoid" include the 2015 model due to potential transmission or engine problems, though others say the 2015 model has fewer complaints than later years.
Resale value: Newer models may be a better buy if you want more modern safety and infotainment features.

What to do before buying

Get a pre-purchase inspection: Have a trusted mechanic check the vehicle for any underlying issues.
Check the vehicle history report: Look for any past problems or recalls.
Drive it: Test the vehicle to see how it drives and performs.
Consider newer models: If your budget allows, a newer model will have more modern features and potentially better reliability.

Does the 2015 Toyota Highlander have transmission problems?

Short answer: The most common problems with the Toyota Highlander transmission are gear slipping, rough or delayed shifting, fluid leaks, whining noises, hesitation when accelerating, unresponsive gears, and complete transmission failure.

What year to stay away from a Toyota Highlander?

Years to avoid in the Toyota Highlander include 2003, 2008, 2014, 2015, and 2020 due to common issues like transmission problems, oil leaks, and technology glitches. Other problematic years to consider are 2001-2007 (engine and climate control issues) and 2016-2019 (varying issues including potential oil leaks in some models).

This video discusses problems with the Toyota Highlander from 2020 to 2025, including paint issues: 54sCarnivautoYouTube · Feb 11, 2025
Toyota Highlander years to avoid

2001–2007: Prone to engine overheating, head gasket failures, and climate control issues like AC compressor and blower motor problems.
2003: A big year for issues, particularly engine oil sludge buildup and premature transmission wear, according to Regan Motors Inc and Clutch.
2008: A redesigned model that experienced oil cooler line leaks, which can cause engine damage if not addressed, and lower-quality interior components.
2014: A recall was issued for the second-row seat assembly that may not lock correctly into the seat track, and there were also reports of issues that might be linked to the transmission, says Clutch and Reddit users.
2015: Experienced growing pains from its redesign, with various reports of growing issues, according to Regan Motors Inc and Clutch.
2020: Experienced early transmission and software problems, say Clutch and Reddit users.

You can watch this video to learn more about common problems with the 2020-2025 Toyota Highlander: 51sChris DrivesYouTube · Jul 5, 2025

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.