2023 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated September 2026
2023 · All trims · All engines
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According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2023 Toyota Sienna has 7 documented known issues, with 1 rated critical. The most serious is Third-Row Seatback Recliner Bolts Under-Torqued (Recall 25V-086 / 25TA05) ($0-$0 repair). Across all issues with published estimates, repair costs range from $250 to $7,000. DIY maintenance guides at au7o.io.
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According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2023 Toyota Sienna has 7 documented issues. The most frequently reported are: Third-Row Seatback Recliner Bolts Under-Torqued (Recall 25V-086 / 25TA05), Momentary Brake Lurch During Regenerative-to-Hydraulic Transition (TSB 0047-24), 12V Auxiliary Battery Parasitic Drain - Vehicle Will Not Enter READY Mode. Of these, 1 is rated critical and should be addressed promptly.
The 2023 Toyota Sienna has 7 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 1 issue is rated critical: Third-Row Seatback Recliner Bolts Under-Torqued (Recall 25V-086 / 25TA05). 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.
Repair costs for known Toyota Sienna issues range from $0 to $7,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Third-Row Seatback Recliner Bolts Under-Torqued (Recall 25V-086 / 25TA05), typically costs $0-$0 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
On roughly 168,000 fourth-generation Sienna Hybrids built from mid-October 2020 through late January 2025, the bolts that attach the split 60/40 third-row seat backs to the recliner assemblies were not tightened to specification during assembly. With low-torque bolts the seatback… Repairs typically run $0-$0. Severity: high.
Fourth-generation Sienna Hybrids blend regenerative braking with friction braking, and the handoff between the two is not transparent. Under gradual deceleration - typically at low speed, on downgrades, or over a bump while braking - the van momentarily lurches forward as though… Repairs typically run $0-$200. Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
Fourth-generation Sienna Hybrids repeatedly go dead at the 12V auxiliary battery, sometimes on nearly new vans. The 12V battery is only replenished by the DC-DC converter while the vehicle is in READY, so anything that keeps drawing after shutdown flattens it over a few days of l… Repairs typically run $250-$700. Severity: medium.
The lower sliding-door rail and the seam where the rocker panel meets the sill trap salt, grit and water on Siennas run in the salt belt. Rust starts inside the lower door track and in the rocker seam under the sliding doors, then perforates outward and can eat into the structura… Repairs typically run $300-$2,500. Severity: medium.
A software error in the Parking Assist ECU / panoramic view monitor can cause the rearview camera image to freeze or show a blank screen when the vehicle is shifted into reverse, most often right after start-up or after the vehicle is keyed off and back on. A frozen/blank backup… Repairs typically run $0-$0. Severity: medium.
The 2021+ Sienna is hybrid-only with a 1.9 kWh nickel-metal hydride battery pack. Some early adopters are reporting signs of hybrid battery performance degradation including reduced electric-only driving range, the gasoline engine running more frequently than expected, decreased… Repairs typically run $0-$7,000. Severity: medium.
Fourth-generation Sienna owners repeatedly report the laminated acoustic windshield cracking from very small impacts, with chips propagating into full-width cracks within minutes - several owners describe a crack starting under the wiper area and running across the glass while dr… Repairs typically run $600-$1,800. Severity: low.
