2021 Mazda 3 transmission control module — Theft-Locking, (keyless entry), (LH door) price snapshot
- Low
- $65
- Average
- $105
- High
- $198
Year & trim-specific price guide
Used 2021 Mazda 3 Transmission Control Module — Theft-Locking, (keyless entry), (LH door) prices
Trim-specific pricing for the Theft-Locking, (keyless entry), (LH door) variant of the 2021 Mazda 3 transmission control module, built from 44 real salvage yard listings with condition grade detail.
Price summary
A used 2021 Mazda 3 transmission control module (Theft-Locking, (keyless entry), (LH door)) costs $65 to $198, with a median asking price of $101. Based on 44 priced salvage yard listings across the US, updated Sep 5, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$101
Grade B (good)$101
USD
Condition comparison
Price by part grade
Grade AClean / low wear$65–$19835 listings
Grade BStandard used$86–$1018 listings
Grade CVisible wearUpdating
Grade XUngraded$100–$1001 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $65–$198 | 35 | |
| Grade BStandard used | $86–$101 | 8 | |
| Grade CVisible wear | Updating | — | |
| Grade XUngraded | $100–$100 | 1 |
Median by grade
Grade price comparison
Grade A$101
Grade B$101
Ungraded$100
Median asking price by seller-reported condition grade · $65–$198 overall range
Trim-specific context
How does the Theft-Locking, (keyless entry), (LH door) compare?
This pricing covers the Theft-Locking, (keyless entry), (LH door) variant of the 2021 Mazda 3 transmission control module, based on 44 priced listings. Its $101 median is 5% above the 2021 Mazda 3 transmission control module overall median of $96.
There are 8 other transmission control module variants available for the 2021 Mazda 3.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Same trim, other years
Theft-Locking, (keyless entry), (LH door) in other model years
Same year, other trims
What other 2021 Mazda 3 transmission control module variants are available?
Communication, (bluetooth connectivity), (center dash mounted)
41 listings$81$71 – $299Multifunction, satellite radio
38 listings$98$71 – $354Multifunction, w/o satellite radio
34 listings$100$45 – $195Body Control (BCM), (behind LH kick panel)
24 listings$56$25 – $335Fuel Pump, (tank mounted)
24 listings$46$41 – $262Air Bag, (LH under dash), (roof air bag equipped)
22 listings$76$41 – $344Power Supply, D41S-675Z0
9 listings$88$65 – $282Power Supply, D42A-675Z0
6 listings$125$111 – $207Back to full guide
2021 Mazda 3 transmission control module — all trims
Common questions
2021 Mazda 3 transmission control module (Theft-Locking, (keyless entry), (LH door)) FAQ
How much is a used 2021 Mazda 3 transmission control module (Theft-Locking, (keyless entry), (LH door))?
Based on 44 priced salvage-yard listings, a used 2021 Mazda 3 transmission control module in the Theft-Locking, (keyless entry), (LH door) variant lists between $65 and $198, with a median asking price of $101.
Which years use the Theft-Locking, (keyless entry), (LH door) transmission control module?
The Theft-Locking, (keyless entry), (LH door) variant appears in model years 2019, 2020, 2021, 2022. Prices and availability may differ by year.