Mercedes S Class engine computer — electronic control module, 231 Type (SL models), SL550 price snapshot
- Low
- $60
- Average
- $227
- High
- $500
Trim-specific price guide
Mercedes S Class Engine Computer — electronic control module, 231 Type (SL models), SL550 prices
Pricing for the electronic control module, 231 Type (SL models), SL550 variant of the Mercedes S Class engine computer, aggregated from 86 salvage yard listings across 4 model years.
SKWritten bySaurabh Kumar · Co-Founder & CTO
SK
Saurabh Kumar
Co-Founder & CTO, Part Price Guide
Built the pricing pipeline that collects and normalizes used OEM part listings from salvage yards and online marketplaces across the US.
ASReviewed byAmbika Sharma · Co-Founder & COO
Last updatedOct 14, 2026AS
Ambika Sharma
Co-Founder & COO, Part Price Guide
12 years of project management and technical operations experience. Reviews price guides for sample size, fitment accuracy, and data freshness.
Price summary
A used Mercedes S Class engine computer (electronic control module, 231 Type (SL models), SL550) costs $60 to $500, with a median asking price of $200. Based on 86 priced salvage yard listings across the US, updated Oct 14, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$200
Grade B (good)$200
USD
Condition comparison
Price by part grade
Grade AClean / low wear$60–$50069 listings
Grade BStandard used$125–$2004 listings
Grade XUngraded$84–$50013 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $60–$500 | 69 | |
| Grade BStandard used | $125–$200 | 4 | |
| Grade XUngraded | $84–$500 | 13 |
Median by grade
Grade price comparison
Grade A$200
Grade B$200
Ungraded$500
Median asking price by seller-reported condition grade · $60–$500 overall range
Trim-specific context
How is the electronic control module, 231 Type (SL models), SL550 priced differently?
This pricing covers the electronic control module, 231 Type (SL models), SL550 variant of the Mercedes S Class engine computer, based on 86 priced listings across 4 model years (2017, 2018, 2019, 2020). Its $200 median is 17% below the Mercedes S Class engine computer overall median of $241.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Price by model year
What does a electronic control module, 231 Type (SL models), SL550 cost by year?
Other trims
Other Mercedes S Class engine computer variants
217 Type, (Cpe), S550
2 yrs$261$65 – $500217 Type, (Cpe), S63
2 yrs$261$65 – $500217 Type, (Cpe), S65
2 yrs$524$420 – $608222 Type, Electronic Control Module, (Sdn), S400
2 yrs$197$100 – $400222 Type, Electronic Control Module, (Sdn), S550
2 yrs$261$65 – $500222 Type, Electronic Control Module, (Sdn), S550e (hybrid), gas engine controller
2 yrs$197$100 – $400222 Type, Electronic Control Module, (Sdn), S600
2 yrs$524$420 – $608222 Type, Electronic Control Module, (Sdn), S600 Maybach
1 yr$524$420 – $608222 Type, Electronic Control Module, (Sdn), S63
2 yrs$261$65 – $500Common questions
Mercedes S Class engine computer (electronic control module, 231 Type (SL models), SL550) FAQ
How much is a used Mercedes S Class engine computer (electronic control module, 231 Type (SL models), SL550)?
Based on 86 priced salvage-yard listings across 4 model years, a used Mercedes S Class engine computer in the electronic control module, 231 Type (SL models), SL550 variant lists between $60 and $500, with a median asking price of $200.
Which Mercedes S Class years use the electronic control module, 231 Type (SL models), SL550 engine computer?
The electronic control module, 231 Type (SL models), SL550 variant appears in model years 2017, 2018, 2019, 2020. Prices and availability differ by year.
Is there a price difference between electronic control module, 231 Type (SL models), SL550 condition grades?
Yes. Grade A has a median of $200, Grade B has a median of $200. Grade A parts are in excellent condition, B is good, and C is fair.