What are the most common Toyota Sienna problems?

According to Au7o's analysis of 3,200+ owner reports, the 2004-2004 Toyota Sienna has 2 documented issues. The most frequently reported are: Power Sliding Door Malfunction, Power Steering Rack Seal Leak. None are rated critical, but regular maintenance is recommended.

Is the Toyota Sienna reliable?

The 2004-2004 Toyota Sienna has 2 known issues documented across 3,200+ owner reports. No issues are rated critical, suggesting generally good reliability. 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 $250 to $2,000, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

2004 Toyota Sienna Problems: 2 Issues Every Owner Should Know

2004 Toyota Sienna Problems: 2 Issues Every Owner Should Know | Au7o

All 2 Known Issues

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Community Reported

3,200 owners

On the 2004-2016 Toyota Sienna, power sliding doors on 2nd and 3rd gen Siennas are prone to cable fraying, motor failure, and latch mechanism issues. Doors may refuse to open/close, reverse mid-travel, or make grinding noises. The cable assembly inside the door wears and eventually snaps.

Common Symptoms

Door stops mid-travel and reverses
Grinding or clicking noise when operating
Door won't open or close with power
Beeping when attempting to operate door
Door ajar warning light stays on

How to Fix

Replace the power sliding door cable assembly (Toyota 69631-08012 left, 69630-08012 right). Motor assembly replacement may also be needed (69634-08020). Latch assembly (69350-08021) is another common failure point. Some owners disable the power function and operate manually as a temporary fix. Labor is significant due to door panel and inner mechanism access.

What Owners Are Using

Parts and tips from 3,200+ owners who fixed this issue

Tip
Tip
UpgradeProfessional Bluetooth OBD-II scanner for reading electrical system fault codes (BlueDriver Bluetooth Pro OBD2 Scan Tool)
View on Amazon
UpgradeAutomotive digital multimeter for diagnosing electrical faults and testing circuits (Innova 3340 Automotive Digital Multimeter)
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UpgradeElectrical contact cleaner for restoring connections and preventing corrosion (CRC QD Electronic Cleaner)
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Typical repair cost:$400 - $1,500

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3,200+ owners have reported this issue

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Community Reported

High Confidence3,200 reportsLast reported by owners Feb 2026Reviewed Feb 2026

On the 2004-2020 Toyota Sienna, 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, groaning pump noise, and eventually heavy steering effort. The leak is typically visible as fluid dripping from the rubber boots at either end of the steering rack or from the area where the steering column connects to the rack.

This issue also affects: Chrysler Concorde, Lexus GS, Nissan Murano

Common Symptoms

Power steering fluid puddle under vehicle
Groaning or whining noise when turning the wheel
Steering feels heavy or stiff, especially at low speed
Power steering fluid level drops frequently
Wet or oily steering rack boots

How to Fix

A leaking steering rack should be replaced or rebuilt. A remanufactured steering rack runs $250-$500 for parts, with labor at $400-$800 (3-5 hours including alignment). A new OEM rack is $600-$1,200. As a temporary measure, topping off the power steering fluid and adding a stop-leak additive (Lucas Power Steering Stop Leak, $10) can slow a minor leak for several months. A four-wheel alignment ($100-$150) is required after rack replacement. The 2021+ Sienna uses electric power steering and does not have this issue.

What Owners Are Using

Parts and tips from 0+ owners who fixed this issue

TipCheck power steering fluid level monthly if you notice any steering noise. Running the pump dry even briefly will damage it, turning a $500 rack repair into a $1,500 rack and pump repair.
UpgradeCardone remanufactured power steering pump — OE-spec (Cardone Power Steering Pump)
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UpgradePrestone power steering fluid — compatible with most systems (Prestone Power Steering Fluid)
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UpgradeCardone remanufactured steering rack — tested and ready to install (Cardone Steering Rack)
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UpgradeMoog tie rod ends — premium chassis parts for steering precision (Moog Tie Rod Ends)
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UpgradeDorman steering shaft — fixes clunking and binding (Dorman Steering Shaft)
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UpgradeDorman intermediate steering shaft — solves steering play (Dorman Intermediate Steering Shaft)
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Typical repair cost:$250 - $2,000

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0+ owners have reported this issue

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Community Reported

Medium Confidence0 reportsLast reported by owners Invalid DateReviewed Invalid Date

⚠️NHTSA Recalls10 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

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

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

Vantage Mobility International, LLC (Vantage) is recalling certain 2012-2018 AMS Genesis wheelchair vans, built on a Toyota Sienna vehicles. The rubber brake hoses that attach to the rear wheel assembly may be too short, causing them to rub against the rear axle trailing arm.

Campaign #19V55300025/07/2019

+ 5 more recalls. Check all on NHTSA.gov

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

2004 Toyota Sienna Problems: 2 Issues Every Owner Should Know

All 2 Known Issues

2004-2016 Toyota Sienna: Power Sliding Door Malfunction#

Common Symptoms

How to Fix

What Owners Are Using

Research This Issue

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

Common Symptoms

How to Fix

What Owners Are Using

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 2004-2016 Toyota Sienna Power Sliding Door Malfunction?

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