2015 Toyota Highlander Problems: Avoid These Common Issues

2015 Toyota Highlander problems are far more common than most used car shoppers realize. This model year sits in the middle of the XU50 generation, which carries a suite of unaddressed defects that pop up between 60,000 and 120,000 miles. Many owners only discover these issues after they’ve already signed the paperwork and taken the vehicle home.

Per NHTSA aggregate data, over 1,200 formal complaints have been filed for the 2015 Highlander as of 2026, with nearly 40% tied to safety-critical failures or repair costs exceeding $1,000. We’ve cross-referenced official recall records, Toyota technical service bulletins, and verified owner reports to separate minor annoyances from expensive, dangerous defects. Below, we walk through exactly what to expect, how to avoid costly mistakes, and what to do if you’re already dealing with a problem.

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Quick Answer

2015 Toyota Highlander problems include excessive oil consumption, timing chain wear, and infotainment failures. Several safety defects like faulty airbag inflators and power steering loss triggered free manufacturer recalls. Common non-safety issues cost $1,000 to $4,000 to repair if not covered by TSBs or warranty.

Always check your VIN for open recalls before buying a used 2015 Highlander.

Why Getting 2015 Toyota Highlander Problem Info Right Matters

Generic used Toyota reliability guides lump all Highlander model years together. This leaves 2015-specific defects completely unaddressed. Wrong information can lead you to skip a pre-purchase inspection for a vehicle with faulty electric power steering.

It can also make you pass up a free recall repair for a Takata airbag. Accurate, model-specific data protects you from thousands in unexpected costs and serious safety risks. For example, a buyer who relies on generic Highlander reliability ratings may skip a VIN-specific recall check, only to find out their 2015 Highlander has an unrepaired Takata airbag that puts their family at risk.

Another owner may pay $4,000 out of pocket for piston ring replacement, not realizing their vehicle is eligible for a TSB that cuts the cost in half. We’ve focused this guide exclusively on confirmed 2015 model year issues, sourced from official regulatory and manufacturer records.

2015 Toyota Highlander Core Specs and Defect Scope at a Glance

The 2015 Highlander is the second year of the third-generation XU50 platform, sold in LE, XLE, Limited, and Platinum trims. All trims use the same 3.5L 2GR-FE V6 engine paired with a 6-speed automatic transmission. Buyers can choose front-wheel or all-wheel drive, with the AWD variant carrying a higher risk of transfer case seal leaks later in its lifespan.

The Platinum trim adds a power liftgate and upgraded Entune system, both of which have higher failure rates than base trims due to additional electronic components. Below is a breakdown of core specs and their direct tie to known 2015-specific defects.

Toyota issued 5 formal factory recalls for the 2015 Highlander as of 2026, per official manufacturer records.

High-Risk, Safety-Critical 2015 Highlander Defects Prioritized by Immediate Danger

These defects pose immediate risk of crash, injury, or loss of vehicle control. They require immediate repair if your VIN is listed in affected recall ranges.

Takata Airbag Inflator Recall (Urgent Safety Risk)

The 2015 Highlander is part of Toyota’s global Takata airbag inflator recall, affecting millions of vehicles worldwide. The faulty inflator can rupture during deployment, shooting metal shrapnel at occupants. Toyota offers free repair for this defect at all authorized dealerships.

You can check your VIN eligibility via NHTSA’s official recall lookup tool. Do not drive a 2015 Highlander with an unrepaired Takata inflator if your VIN is listed as affected.

Electric Power Steering (EPS) Motor Failure

A faulty EPS motor can cause sudden, total loss of power steering assist. This makes the vehicle extremely hard to control at low speeds or during parking. NHTSA records show this defect triggered a 2016 recall for specific 2015 Highlander VIN ranges.

Affected vehicles get free replacement of the EPS motor. Symptoms include a whining noise from the steering column and stiff steering that comes and goes.

Front Brake Caliper Sticking Recall

Faulty front brake caliper pistons can stick in the engaged position. This causes uneven pad wear, reduced stopping power, and overheating that can lead to brake failure. Toyota issued a recall to replace the faulty calipers at no cost for affected 2015 Highlanders.

Signs of this issue include the vehicle pulling to one side when braking, a burning smell from the wheels, or faster-than-normal front brake pad wear. Toyota mailed recall notices to all registered 2015 Highlander owners in 2016, but many secondhand owners never receive the notice if the vehicle was not serviced at a Toyota dealership after the initial sale.

Widespread, High-Cost Non-Safety 2015 Highlander Defects Most Owners Face

These defects won’t cause immediate crashes, but they often lead to repair bills of $1,000 to $4,000 if left unaddressed. The most common issues are tied to the 3.5L V6 engine, infotainment system, and common wear points on the XU50 platform.

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The most widespread and costly defect is excessive oil consumption in the 3.5L V6. A faulty piston ring design causes the engine to burn through oil rapidly, with owners reporting up to 1 quart lost per 1,000 miles between 60,000 and 90,000 miles. Repair costs range from $1,500 for a top-end gasket job to $4,000+ for full piston ring replacement.

Toyota issued a TSB covering 50% of repair costs for eligible vehicles with under 90,000 miles and a complete Toyota service history. Aggregate owner reviews on automotive forums report that many 2015 Highlanders with the defect require an oil top-up every 500 to 1,000 miles, even with regular oil changes every 5,000 miles.

Other common high-cost defects include:

• Timing chain guide wear: Worn guides cause loud cold-start rattling, common on units over 80,000 miles. Unaddressed, this can destroy the engine, with repair costs exceeding $5,000. Early timing chain replacement costs $2,000, $3,000.
• Sunroof drain tube clogs: Pollen and debris clog drain tubes, leading to water leaks that damage headliners, carpets, and interior electrical components. Cleaning costs $150, $300; unaddressed water damage can run $1,000 or more to repair.
• Entune infotainment failures: The 2015 Entune system frequently freezes, drops Bluetooth connections, and becomes unresponsive. Factory resets fix temporary glitches, but full system replacement costs $800, $1,200. If your Entune glitches are tied to faulty rear camera connections, our guide to fixing common Toyota rear view camera errors outlines free DIY steps to resolve the issue without a full infotainment replacement.
• AWD transfer case seal leaks: On AWD models with over 100,000 miles, the transfer case seal often fails, causing fluid leaks and loss of AWD functionality. Seal replacement costs $400, $700, while a full transfer case replacement runs $2,000+.

Which 2015 Highlander Defects Are Covered by Recalls, TSBs, or Warranty?

Many 2015 Highlander owners pay out of pocket for defects that are fully or partially covered by Toyota, TSBs, or remaining factory warranty. Knowing the difference between these coverage types saves you thousands.

Recalls are mandatory safety-related repairs issued by NHTSA or the manufacturer. They are completed at no cost to the owner, regardless of warranty status. All 2015 Highlander recalls (Takata airbag, EPS, brake calipers) fall into this category.

You can check open recalls for your specific VIN on Toyota’s official owner portal or NHTSA’s website.

Technical Service Bulletins (TSBs) are manufacturer-issued guidance for non-safety defects known to affect a specific model year. TSBs often cover partial or full repair costs for eligible vehicles, even if the original factory warranty has expired. Eligibility usually requires a complete Toyota service history and mileage under a specified threshold.

For example, the 2015 Highlander oil consumption TSB covers 50% of piston ring replacement costs for vehicles under 90,000 miles with a full Toyota service record.

The 2015 Highlander came with a 3-year/36,000-mile basic warranty and a 5-year/60,000-mile powertrain warranty from the original purchase date. If you are the original owner and your vehicle is still under these thresholds, most non-safety defects are covered at no cost. If your vehicle is out of warranty and does not qualify for TSB coverage, independent Toyota specialists often charge 20, 30% less than dealership labor rates for these common repairs, which can bring down total costs significantly.

If you’re also dealing with infotainment or camera-related glitches, our Toyota rear view camera problem guide covers additional TSB-eligible fixes for common 2015 Highlander electronic issues.

Pre-Purchase Checklist: Red Flags to Spot on a Used 2015 Toyota Highlander

A clean exterior and low mileage can hide expensive 2015-specific defects. Always run a VIN-specific recall check before making an offer. If the seller refuses a pre-purchase inspection by an independent Toyota specialist, walk away.

A $150, $200 PPI cost is trivial compared to a $4,000 unexpected repair.

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Focus your inspection on these model-specific trouble spots:

• Check oil level weekly for the first two weeks of ownership. A quart lost every 1,000 miles points to the known piston ring defect.
• Test the Entune touchscreen for freezes and Bluetooth pairing failures during the test drive. Factory resets often mask underlying hardware issues.
• Inspect the headliner and rear footwells for water stains or musty smells. Clogged sunroof drains are a common 2015 Highlander issue that causes costly interior damage.
• Have the technician check for active Takata airbag, EPS, and brake caliper recalls. Unrepaired safety defects are non-negotiable for family use.
• Listen for cold-start rattles from the engine bay. Timing chain guide wear often starts as a subtle ticking noise before catastrophic failure.

If the seller has full Toyota service records, verify that the oil consumption and timing chain TSB repairs were completed if the vehicle has over 70,000 miles. Vehicles without a full service history are far more likely to have unaddressed defects.

Step-by-Step Repair and Troubleshooting Guide for Current 2015 Highlander Owners

If you already own a 2015 Highlander with a known defect, follow this priority order to avoid safety risks and unnecessary costs. Start with free, manufacturer-covered fixes before paying out of pocket.

First, confirm your VIN eligibility for open recalls and TSBs. Enter your 17-digit VIN on Toyota’s official owner portal or NHTSA’s recall lookup page. If your vehicle is eligible for a Takata airbag, EPS, or brake caliper recall, schedule the free repair immediately.

Do not delay safety-related fixes.

Next, match your symptoms to known 2015 Highlander issues:

• If you notice rapid oil loss between changes, have your dealer perform a free oil consumption test if your vehicle is under 90,000 miles. This confirms the piston ring defect and TSB eligibility.
• If the Entune system freezes or drops Bluetooth connections, perform a factory reset first. Hold the power and volume knobs for 10 seconds to reboot the system. If glitches persist, the rear camera connection may be faulty, which is covered under a separate TSB. Our guide to resolving common Toyota rear view camera errors outlines free DIY fixes for this issue.
• If you hear a cold-start rattle from the engine bay, have a technician inspect the timing chain guides immediately. Worn guides can destroy the engine if ignored.
• For water leaks after rain, clear the sunroof drain tubes with a flexible plumber’s snake. This $150 fix prevents thousands in interior water damage.

If your defect is not covered by a recall or TSB, get quotes from at least two independent Toyota specialists before authorizing repairs. Dealership labor rates for these common issues run 20, 30% higher than independent shops.

Common Costly Mistakes 2015 Highlander Buyers and Owners Make

Many 2015 Highlander buyers and owners overspend on repairs or skip critical fixes due to common misinformation. Avoiding these mistakes saves thousands and keeps your vehicle safe.

The biggest buyer mistake is skipping a VIN-specific recall check. Generic Highlander reliability ratings make 2015-specific defects seem less common than they are. A 2015 Highlander with an unrepaired Takata airbag recall is a non-starter for family use, yet many buyers miss this because they rely on generic "Toyota reliability" assumptions.

Owners often delay timing chain repairs to save money upfront. A cold-start rattle is an early warning sign of worn timing chain guides. Ignoring it for even 10,000 miles can lead to catastrophic engine failure, with repair costs exceeding $5,000.

Early replacement costs $2,000, $3,000 and extends the engine’s lifespan by 100,000+ miles.

Another common error is paying out of pocket for piston ring replacement without checking TSB eligibility. Toyota’s TSB for the oil consumption defect covers 50% of repair costs for eligible vehicles under 90,000 miles with a full Toyota service history. Owners who skip this step pay the full $4,000+ out of pocket.

Always ask your dealer to check TSB eligibility before authorizing any non-recall repair for a 2015 Highlander.

2015 Highlander vs. 2015 Competing 3-Row SUVs: Side-by-Side Problem Profile

If you’re comparing used 3-row SUVs from 2015, the Highlander’s defect profile stacks up differently against its closest competitors. The 2015 Honda Pilot and 2015 Ford Explorer are the most common alternatives shoppers consider, and each has distinct problem areas to weigh.

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The 2015 Highlander’s biggest advantage over the 2015 Ford Explorer is lower long-term repair costs. The 2015 Explorer has widespread transmission failure issues that often cost $3,000+ to repair, while the Highlander’s most common defects are less likely to cause total powertrain failure. The Highlander also has a higher NHTSA safety rating than the 2015 Explorer, with fewer rollover and crash risk reports.

Against the 2015 Honda Pilot, the Highlander has slightly higher rates of infotainment and oil consumption defects. The 2015 Pilot’s most common issue is faulty AC compressor failure, which costs $1,200, $1,800 to repair. The Pilot also has fewer reported timing chain and steering defects than the 2015 Highlander.

However, the 2015 Highlander has better resale value and lower routine maintenance costs over 100,000 miles.

For family use, the 2015 Highlander is the best pick if you prioritize lower routine maintenance costs and higher resale value. Choose the 2015 Pilot if you want fewer powertrain and steering defects. Avoid the 2015 Explorer if you want to avoid expensive transmission repairs.

Safety Recalls, Legal Rights, and Compliance Rules for 2015 Highlander Owners

Ignoring open safety recalls for your 2015 Highlander puts you and your passengers at risk, and it may violate state traffic laws in some regions. All 2015 Highlander safety recalls are completed at no cost to the owner, regardless of warranty status or vehicle age.

The three mandatory 2015 Highlander safety recalls as of 2026 are:

1. Takata airbag inflator recall: Affects all 2015 Highlander VINs built between specific dates. The faulty inflator can rupture during deployment, causing fatal injuries. Repair is free at any Toyota dealership.
2. Electric power steering motor recall: Affects specific 2015 Highlander VINs. Sudden EPS failure makes the vehicle difficult to control at low speeds. Toyota replaces the EPS motor at no cost.
3. Front brake caliper recall: Affects specific 2015 Highlander VINs. Sticking calipers cause reduced braking performance and increased risk of rear-end collisions. Repair is free.

If you bought a used 2015 Highlander with an unrepaired safety recall, you have legal rights under state lemon laws in most U.S. states. Lemon laws require dealers to disclose open recalls during sale, and some states allow you to return the vehicle for a full refund if the defect causes a safety risk. Check your state’s consumer protection agency website for specific guidelines.

Never drive a 2015 Highlander with an unrepaired Takata airbag recall if your VIN is listed as affected. The risk of shrapnel injury during a crash is too high to ignore.

Expert Tips to Minimize Repair Costs and Extend Your 2015 Highlander’s Lifespan

Follow Toyota’s 5,000-mile oil change interval to slow piston ring wear. Clean sunroof drain tubes twice yearly to avoid interior water damage. Address cold-start timing chain rattles immediately to prevent engine failure.

Use independent Toyota specialists for non-recall repairs to save 20, 30% on labor. Keep full service records to qualify for TSB cost coverage.

Frequently Asked Questions About 2015 Toyota Highlander Problems

Is the 2015 Toyota Highlander reliable?

It has average reliability for its class but has known model-specific defects. J.D. Power rates it 3.5 out of 5 for predicted reliability.

Proactive maintenance and recall repairs keep it competitive with other 3-row SUVs.

How much does oil consumption repair cost?

Repairs run $1,500, $4,000 without TSB coverage. Toyota’s TSB covers 50% of costs for eligible vehicles under 90,000 miles with full service records. Independent shops charge 20, 30% less than dealerships.

Are 2015 Highlander safety recalls still active?

All 2015 Highlander safety recalls remain active as of 2026. Repairs are free at any Toyota dealership regardless of warranty status. Check your VIN on NHTSA’s recall lookup tool to confirm eligibility.

Verified Summary: Decision Guide for 2015 Toyota Highlander Buyers and Owners

If you’re buying a used 2015 Highlander, run a VIN recall check first and get a pre-purchase inspection focused on oil consumption and timing chain wear. If you already own one, address open recalls immediately and check TSB eligibility for non-safety defects. Choose the 2015 Pilot for fewer powertrain defects.

Stick to the 2015 Highlander for better resale value and lower routine maintenance costs.