2018 Toyota Sienna Problems: 6 Issues Every Owner Should Know

2018 Toyota Sienna Problems: 6 Issues Every Owner Should Know | Au7o

NHTSA Recalls15 recalls

FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2018-2019 4Runner, 2019-2020 Avalon, 2019 Corolla Hatchback, 2017-2019 Highlander, 2018-2020 Camry, 2020 Corolla, 2018-2019 Land Cruiser, 2017-2020 Tacoma, 2019-2020 RAV4, 2019-2020 Sequoia, 2017-2020 Sienna, 2019-2020 Tundra, 2018-2020 Lexus ES350, 2017 Lexus GS200t, 2017-2019 Lexus GS350, 2019 Lexus GS300, 2018-2020 Lexus LC500h, 2019-2020 Lexus LS500, 2018-2019 Lexus GX460, 2017 Lexus IS200t, 2019 Lexus IS300, 2019 Lexus IS350, 2018-2020 Lexus LC500, 2018 Lexus LS500, 2019 Lexus LS500h, 2018-2019 Lexus LX570, 2017 Lexus RC200t, 2019 Lexus RC300, RC350, 2017 and 2019-2020 Lexus RX350, 2018-2020 RX350L, 2019 Lexus UX200, 2018-2019 Lexus NX300 vehicles. The low-pressure fuel pump inside the fuel tank may fail.

Campaign #20V68200004/11/2020

STEERING

Braun Corporation (Braun) is recalling certain modified 2017-2020 Toyota Sienna vehicles. The steering shaft extensions may have been improperly manufactured, possibly causing the extensions to fracture.

Campaign #19V53200016/07/2019

FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

Toyota Motor Engineering & Manufacturing (Toyota) recalled certain 2018-2019 4Runner, Highlander, Camry, Land Cruiser, Sequoia, Sienna, Tacoma and Tundra, and Lexus RC 300, RC 350, GS 350, GX 460, IS 300, LC 500, LS 500, LX 570, RX 350L, and 2019 Toyota Avalon and Corolla, and certain Lexus NX 300, and ES 350 vehicles on January 13, 2020. On March 4, 2020, Toyota expanded the recall to include certain 2014-2015 Toyota 4Runner and Land Cruiser, 2018 Avalon, Corolla, 2014 FJ Cruiser, 2017 Sienna and Lexus 2018 ES 350, 2018-2019 GS 300, 2013-2014 GS350, 2014-2015 GX 460, IS 350 and LX 570, 2014 IS F, 2018-2019 IS 350, LC 500H and LS 500H, 2013-2015 LS 460, 2015 NX 200T and RC350, 2017 RC 200T and RX 350. Toyota also removed the 2018-2019 Toyota 4Runner and Land Cruiser and 2018-2019 Lexus GX 460 and LX 570 and 2019 NX300 from inclusion in this recall. On March 19, 2020, Toyota expanded the recall to include 2015 Lexus GS350 vehicles. The low-pressure fuel pump inside the fuel tank may fail.

Campaign #20V01200013/01/2020

SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS

Braun Corporation (Braun) is recalling certain 2014-2019 Toyota Sienna mobility van conversions. The brake lines may have incorrect tube nut fittings installed, which may cause a pressure drop within the braking system.

Campaign #19V41000004/06/2019

EQUIPMENT:OTHER:LABELS

Southeast Toyota Distributors, LLC (SET) is recalling certain 2017-2019 Toyota Camry, Corolla, Rav4, Sienna, and Yaris iA vehicles equipped with factory-installed floor mats. The load carrying capacity modification label may be incorrect. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 110, "Tire Selection and Rims."

Campaign #19V50300028/06/2019

+ 10 more recalls. Check all on NHTSA.gov

Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.

Frequently Asked Questions

What are the most common Toyota Sienna problems?

According to Au7o's analysis of 2,285+ owner reports, the 2018 Toyota Sienna has 6 documented issues. The most frequently reported are: Denso Low-Pressure Fuel Pump Failure Causing Engine Stall (Recall 20V-682 / 20TA02), 3.5L 2GR-FE Oil Leak from VVT-i System and Timing Cover, 2GR-FE V6 Excessive Oil Consumption. Of these, 1 is rated critical and should be addressed promptly.

Is the Toyota Sienna reliable?

The 2018 Toyota Sienna has 6 known issues documented across 2,285+ owner reports. 1 issue is rated critical: Denso Low-Pressure Fuel Pump Failure Causing Engine Stall (Recall 20V-682 / 20TA02). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Toyota Sienna problems?

Repair costs for known Toyota Sienna issues range from $0 to $3,800, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Denso Low-Pressure Fuel Pump Failure Causing Engine Stall (Recall 20V-682 / 20TA02), typically costs $0-$1,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2017-2020 Toyota Sienna Denso Low-Pressure Fuel Pump Failure Causing Engine Stall (Recall 20V-682 / 20TA02)?

The Denso-built low-pressure (in-tank) fuel pump can fail without warning. The pump impeller was molded from a lower-density resin that absorbs fuel over time, swells, and binds against the pump housing, stopping the pump. This cuts fuel delivery and causes the engine to stall, o… Repairs typically run $0-$1,000. Severity: high.

What is the 2007-2020 Toyota Sienna 3.5L 2GR-FE Oil Leak from VVT-i System and Timing Cover?

The 3.5L 2GR-FE V6 commonly develops oil leaks from the VVT-i oil line, timing cover, and valve cover gaskets. The VVT-i oil hose fitting loosens over time, dripping oil onto the exhaust manifold creating a burning smell and fire risk. Repairs typically run $50-$800. Severity: medium.

What is the 2007-2020 Toyota Sienna 2GR-FE V6 Excessive Oil Consumption?

The 3.5L 2GR-FE V6 in 2nd and 3rd generation Siennas can consume 1 quart of oil every 2,000-3,000 miles. Worn piston rings and valve stem seals are the primary causes. The issue is more prevalent in vehicles driven primarily in city stop-and-go conditions where the engine rarely… Repairs typically run $200-$3,800. Severity: medium.

What is the 2011-2020 Toyota Sienna AC Evaporator Core Leak and Refrigerant Loss?

The front AC evaporator core in 3rd generation Siennas develops pinhole leaks from internal corrosion, causing gradual refrigerant loss. The AC system blows warm air intermittently, then fails completely. The rear AC system (if equipped) has a separate evaporator that can also fa… Repairs typically run $800-$2,200. Severity: medium.

What is the 2004-2020 Toyota Sienna Power Steering Rack Seal Leak?

The hydraulic power steering rack on 2004-2020 Sienna models (non-hybrid, pre-2021) develops internal seal leaks that allow power steering fluid to weep from the rack boots or the input shaft seal. The leak starts slowly but progressively worsens, leading to low fluid level, groa… Repairs typically run $250-$2,000. Severity: medium.

What is the 2011-2020 Toyota Sienna EVAP System Leak-Detection / Vapor Canister Fault (Check Engine Light, Hard Refueling)?

Third-generation Siennas commonly throw EVAP (evaporative emissions) faults as the system ages. Failure points include the canister vent solenoid/VSV sticking, the leak-detection pump and reference orifice, the purge valve, and a worn or loose gas cap. Beyond the check engine lig… Repairs typically run $150-$500. Severity: low.

2018 Toyota Sienna Problems: 6 Issues Every Owner Should Know

All 6 Known Issues

2017-2020 Toyota Sienna: Denso Low-Pressure Fuel Pump Failure Causing Engine Stall (Recall 20V-682 / 20TA02)#

Common Symptoms

How to Fix

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2007-2020 Toyota Sienna: 3.5L 2GR-FE Oil Leak from VVT-i System and Timing Cover#

Common Symptoms

How to Fix

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2007-2020 Toyota Sienna: 2GR-FE V6 Excessive Oil Consumption#

Common Symptoms

How to Fix

Owner tips & cautions

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2011-2020 Toyota Sienna: AC Evaporator Core Leak and Refrigerant Loss#

Common Symptoms

How to Fix

Owner tips & cautions

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2004-2020 Toyota Sienna: Power Steering Rack Seal Leak#

Common Symptoms

How to Fix

Owner tips & cautions

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2011-2020 Toyota Sienna: EVAP System Leak-Detection / Vapor Canister Fault (Check Engine Light, Hard Refueling)#

Common Symptoms

How to Fix

Research This Issue

Other Toyota Models

Frequently Asked Questions

What are the most common Toyota Sienna problems?

Is the Toyota Sienna reliable?

How much does it cost to fix common Toyota Sienna problems?

What is the 2017-2020 Toyota Sienna Denso Low-Pressure Fuel Pump Failure Causing Engine Stall (Recall 20V-682 / 20TA02)?

What is the 2007-2020 Toyota Sienna 3.5L 2GR-FE Oil Leak from VVT-i System and Timing Cover?

What is the 2007-2020 Toyota Sienna 2GR-FE V6 Excessive Oil Consumption?

What is the 2011-2020 Toyota Sienna AC Evaporator Core Leak and Refrigerant Loss?

What is the 2004-2020 Toyota Sienna Power Steering Rack Seal Leak?

What is the 2011-2020 Toyota Sienna EVAP System Leak-Detection / Vapor Canister Fault (Check Engine Light, Hard Refueling)?