2018 Toyota Corolla transmission control module — Power Supply, (Sdn, alternator control), (battery box mounted) price snapshot
- Low
- $50
- Average
- $110
- High
- $272

Year & trim-specific price guide
A used 2018 Toyota Corolla transmission control module (Power Supply, (Sdn, alternator control), (battery box mounted)) costs $50 to $272, with a median asking price of $99. Based on 46 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 | $50–$272 | 42 | |
| Grade BStandard used | $50–$120 | 4 | |
| Grade CVisible wear | Updating | — | |
| Grade XUngraded | Updating | — |
Median by grade
Median asking price by seller-reported condition grade · $50–$272 overall range
Trim-specific context
This pricing covers the Power Supply, (Sdn, alternator control), (battery box mounted) variant of the 2018 Toyota Corolla transmission control module, based on 46 priced listings. Its $99 median is 4% below the 2018 Toyota Corolla transmission control module overall median of $103.
There are 31 other transmission control module variants available for the 2018 Toyota Corolla.
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
Back to full guide
Common questions
Based on 46 priced salvage-yard listings, a used 2018 Toyota Corolla transmission control module in the Power Supply, (Sdn, alternator control), (battery box mounted) variant lists between $50 and $272, with a median asking price of $99.
The Power Supply, (Sdn, alternator control), (battery box mounted) variant appears in model years 2017, 2018. Prices and availability may differ by year.