2020 Toyota Sienna transmission control module — Mirror, (door mounted), LH price snapshot
- Low
- $30
- Average
- $78
- High
- $195

Year & trim-specific price guide
A used 2020 Toyota Sienna transmission control module (Mirror, (door mounted), LH) costs $30 to $195, with a median asking price of $75. Based on 29 priced salvage yard listings across the US, updated Sep 5, 2026. Prices exclude shipping, core charges, and installation.
Condition comparison
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $30–$195 | 12 | |
| Grade BStandard used | $65–$100 | 5 | |
| Grade CVisible wear | $40–$75 | 8 | |
| Grade XUngraded | $55–$75 | 4 |
Median by grade
Median asking price by seller-reported condition grade · $30–$195 overall range
Trim-specific context
This pricing covers the Mirror, (door mounted), LH variant of the 2020 Toyota Sienna transmission control module, based on 29 priced listings. Its $75 median is 25% below the 2020 Toyota Sienna transmission control module overall median of $100.
There are 35 other transmission control module variants available for the 2020 Toyota Sienna.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Same trim, other years
Same year, other trims
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Common questions
Based on 29 priced salvage-yard listings, a used 2020 Toyota Sienna transmission control module in the Mirror, (door mounted), LH variant lists between $30 and $195, with a median asking price of $75.
The Mirror, (door mounted), LH variant appears in model years 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025. Prices and availability may differ by year.