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2018 Toyota Sienna · Torque converter replacement
2018 Toyota Sienna torque converter replacement cost
A 2018 Toyota Sienna torque converter replacement typically costs $1,540 to $2,970 at an independent shop, parts and labor included. The torque converter itself runs $300 to $700, and the job takes 6 to 9 hours. Prices updated September 2026.
Estimated cost for your car
$1,540 to $2,970
Charlotte, NC area
Prices updated September 2026
Torque converter (part)
$300 to $700
Labor (6 to 9 hours)
$1,150 to $2,100
Fluids + supplies
$90 to $170
2018 Toyota Sienna torque converter replacement: parts and labor
Labor runs $1,150 to $2,100 (the job takes 6 to 9 hours at typical independent-shop rates), and the torque converter itself typically costs $300 to $700 for the 2018 Toyota Sienna, plus $90 to $170 in atf ws (8 to 10 qt) + shop supplies. Prices updated September 2026.
| Engine | Parts | Labor | Estimated total |
|---|---|---|---|
| 3.5L V6 | $300 to $700 | $1,150 to $2,100 (9.5 to 13 hrs) | $1,540 to $2,970 |
Coverage note: None excluded. Every US 2018 Sienna uses the same 3.5L V6 (2GR-FKS) with the Direct Shift 8AT; there was no four-cylinder after 2012 and no hybrid until the 2021 redesign. FWD vs AWD is folded into the labor spread (AWD adds propeller shaft and driveline work, about 1 to 1.5 extra hours).
Dealer math is a different universe on this job. The genuine converter (32000-48060, superseded to 32000-06070) lists at $2,754.50 and runs $1,765 to $1,920 even from discount online Toyota dealers, so a dealer converter job lands around $4,000 to $5,500, and once a dealer sees metal in the pan they typically quote a complete transmission instead; UA80-family owners report $7,400 to $12,000 dealer quotes. RepairPal has no Sienna torque-converter line item, only a $3,600 to $4,200 transmission replacement range, and the generic $600 to $1,000 torque converter figures floating around the web are wrong for this van because they ignore the 10.8-hour transaxle R&R that FWD Toyota minivans require.
Where these numbers come from
- Estimate ranges: a hand-verified research pass for this exact vehicle and repair, cross-referenced across 13 independent sources (parts retailers, labor guides, and published shop pricing), completed September 2026.
- Recall and complaint data: NHTSA (National Highway Traffic Safety Administration) records for the 2018 Toyota Sienna specifically, filtered to transmission relevance and refreshed daily from the federal API.
- Local prices: real, accepted quotes from verified Fixxr marketplace jobs, published per metro once five verified jobs of this type have closed. Never estimates dressed up as transactions.
Not included in the estimate: Diagnosis time (pan drop and metal inspection, road test, scan) at $150 to $250, Full transmission replacement or rebuild if metal contamination is found (adds $3,000 to $6,000+), Valve body or solenoid replacement, Transmission cooler or line replacement beyond a basic flush, Engine and transmission mounts, often recommended while everything is out, Dealer software recalibration if the independent cannot flash it, Taxes, shop fees, and rental or towing.
What actually goes wrong on this exact vehicle
Federal safety data for the 2018 Toyota Sienna, filtered to the transmission specifically.
0
transmission recalls
13
transmission owner complaints
Real owner report, verbatim from NHTSA:
“Vehicle: 2018 Toyota Sienna XLE AWD, VIN [XXX], approximately 112,000 miles. Component: Power Train / Automatic Transmission (UA80F 8-speed). The vehicle has developed a pronounced whining noise from the transmission that rises with road speed, accompanied by harsh/rough shifting. A Toyota dealer inspected the vehicle and diagnosed a failing transmission requiring replacement. The symptoms and diagnostic trouble codes match those described in Toyota TSB T-SB-0160-18 ("Transaxle Whine Noise, Harsh Shift, MIL ON, or Reduced Power") for the UA80 8-speed transmission. This is the same failure mode Toyota acknowledged in Customer Support Program ZJC, which attributes the defect to a washer/locking tab that was not sufficiently bent during assembly, allowing an internal nut to loosen and causing progressive internal damage. However, this vehicle's transaxle serial number falls outside the range covered by ZJC, so Toyota has not provided coverage despite the identical defect and symptoms. This represents a safety concern. Based on documented failures of this transmission across the UA80 platform, the condition can progress to loss of power, limp mode, or sudden loss of forward propulsion while driving — including at highway speed and without further warning — creating a risk of a crash or of being stranded in traffic. The vehicle has been maintained through authorized Toyota service. I am requesting that NHTSA investigate whether the UA80/UA80F transmission defect warrants a broader safety defect determination and recall, given the volume of similar complaints across affected model years INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)”
Get the failure confirmed with a real diagnosis before you approve the repair, so you fix the part that actually failed.
Recall fixes are free at the dealer. Everything else deserves a fair price.
Source: NHTSA (National Highway Traffic Safety Administration), recalls and complaints for the 2018 Toyota Sienna. Refreshed periodically.
Not sure what’s wrong?
A shudder or slip can be the torque converter, the transmission itself, worn mounts, or even misfires. Describe what your truck is doing and our free diagnostic tool narrows it down before you spend a dollar.
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Get connected with a mechanicHow your torque converter works
The torque converter is the fluid coupling between the engine and the automatic transmission in your 2018 Toyota Sienna. It lets the engine keep spinning at a stoplight, multiplies torque when you pull away, and at cruising speed an internal lockup clutch grips solid to stop wasting fuel. That clutch is the part that wears out, and because the converter bolts on between the engine and transmission, replacing it means removing the transmission, which is why labor is most of the bill.
Four signs it’s the torque converter
Shudder at steady speed
A rumble-strip vibration at light throttle on the highway. The classic sign of a worn converter lockup clutch.
RPM flares, truck doesn't
Engine revs climb without matching speed. The converter or transmission is slipping instead of gripping.
Delayed or harsh engagement
A pause or clunk when shifting into drive or reverse, especially cold.
Hot, dark, or burnt fluid
A slipping converter cooks the fluid. Dark color or a burnt smell means friction material is circulating.
The free check: on a quiet road, hold a steady 45 to 55 mph at light throttle. A vibration that appears in that zone and fades when you accelerate or lift off points at the converter clutch. Mention exactly when it happens to your shop; it is the single most useful thing you can tell them.
What a torque converter replacement is like on the 2018 Toyota Sienna
Before paying anyone a dime, run the VIN at a Toyota dealer. 2017 to 2018 Siennas built from late July 2016 to mid February 2018 (about 83,700 vans) fall under Toyota Customer Support Program ZJC for the UA80 8-speed, issued because a washer tab inside the transmission was not fully bent at assembly and a nut can back off. Symptoms are a whine while driving, harsh shifting, reduced power, and warning lights. The covered repair is exactly this job: a new torque converter, extra pan magnets, and updated software, with coverage that ran 10 years from first use regardless of mileage. A 2018 van in 2026 can still squeak inside that window, which would turn a $2,000+ repair into $0.
Every 2018 Sienna has the transverse 3.5L 2GR-FKS V6 bolted to the Aisin-built UA80E Direct Shift 8AT (GSL30 chassis code FWD, GSL35 AWD), and the converter only comes out with the transaxle. The published labor guide for a Sienna 3.5L transaxle R&R is 10.8 hours on FWD, which means dropping the subframe, pulling both axles, and supporting the engine from above; the converter swap itself takes minutes once the case is on the bench. The AWD van adds the propeller shaft and transfer-side disconnection, roughly 1 to 1.5 hours more, which is the top of the labor spread here.
The factory converter is part 32000-48060, superseded to 32000-06070, and it is shared across the UA80 family (Camry, Avalon, Highlander V6). List price is $2,754.50, with online Toyota dealers at roughly $1,765 to $1,920. RockAuto does not catalog a converter for this van at all; this is a transmission-specialist part. Converter rebuilders who service the UA80E/UA80F sell exchange units far cheaper: maktrans lists the 38A050J-marked Toyota converter at $262.50 plus $150 restoration, and reman units from converter houses generally land in the $300 to $550 range, which is what an honest independent will quote.
One myth to kill: shudder on this van is usually not a simple lockup-clutch problem the way it was on older U151E Siennas, so do not expect a fluid change plus converter swap to be a guaranteed fix. Documented UA80 failures start with the front planetary pinion bearings shedding metal, and that debris is what shreds the converter; owners of UA80-equipped Toyotas have reported $7,400 to $12,000 dealer quotes because dealers replace the whole transmission once metal is found. Have the shop pull the pan first. If the magnets are furry with metal, a lone converter is money burned, and a remanufactured UA80E with converter included (DriveTrain Direct sells them with a 3-year parts and labor warranty) is the smarter conversation.
The UA80E takes Toyota WS fluid only, and a converter replacement means a near-total refill of roughly 8 to 10 quarts rather than the 3.5 to 4 quart drain-and-fill, at $10 to $19 per quart for genuine WS (Walmart sells it around $18.50, WS-spec aftermarket like Beck/Arnley or Idemitsu runs less at O'Reilly). A competent shop will also flush the cooler circuit so old debris cannot recontaminate the new converter, and will confirm the transmission software is current since the ZJC fix paired the converter with a calibration update.
Estimate note: these are researched independent-shop ranges, not a guaranteed quote. The only exact number is one from a shop that has seen your car.
Frequently asked questions
How much does a 2018 Toyota Sienna torque converter replacement cost?
A 2018 Toyota Sienna torque converter replacement typically runs $1,540 to $2,970 at an independent shop, parts and labor included. The torque converter itself is $300 to $700, labor makes up most of the rest, and the job takes 6 to 9 hours.Why does the price change with the engine?
The 2018 Toyota Sienna came with more than one engine, and they do not share the same part or the same access. A tighter engine bay or extra teardown adds labor hours, and the part price moves too. Sites that show one national number flatten that out. Pick your engine on the estimate above for a closer figure.What are the signs of a bad torque converter?
The classic sign is a shudder at steady highway speed under light throttle, a rumble-strip vibration that comes and goes as the converter's lockup clutch grabs and slips. Others: engine RPM flaring up without the truck speeding up, a delayed or harsh clunk into drive, a whine that changes with gear, and transmission temperature climbing on grades. These symptoms overlap with internal transmission problems and even engine misfires, so get a real diagnosis before paying for either.Can I drive my Toyota with a bad torque converter?
Briefly, but it gets more expensive the longer you wait. A slipping converter sheds clutch material into the transmission fluid and runs hot, and that debris circulates through the entire transmission. Caught early, this can be a converter and fluid job. Ignored, it becomes a full rebuild at several times the price. If it shudders occasionally, book the repair soon; if it slips hard or overheats, stop driving it.Should the transmission be rebuilt at the same time?
Fluid condition is the tell. If the fluid is clean and the failure is isolated to the converter clutch, a converter-only replacement is a legitimate fix, and the labor is already paid since the transmission comes out either way. If the fluid is dark, smells burnt, or carries metal or friction material, converter debris has been through the whole unit and a reputable shop will recommend a rebuild instead of bolting a new converter to a dying transmission. Ask to see the fluid and the pan.How long does a torque converter last?
Usually the life of the transmission, commonly 100,000 to 200,000 miles. The weak point is the lockup clutch inside the converter, which wears like any friction clutch, and worn-out fluid accelerates it. Regular transmission fluid service is the cheapest way to extend converter life, and it is also what keeps a future repair converter-only instead of a rebuild.Are there recalls on the 2018 Toyota Sienna?
Yes, NHTSA lists 7 recalls for the 2018 Toyota Sienna. Recall repairs are done free of charge at a franchised dealer for that brand, so it is worth checking your VIN before paying a shop for related work.
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