Fitment notes: Located in trunk; AGM required for start-stop system and electrical load management
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Every control module on the 2024-2026 Mercedes-Benz S580 — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
Electric Power Steering Control Unit (EPS)4.5 hr R&Rsecurity gateway +1.5 hr▸ programming details
📍 Steering column, integrated with steering gear
🔧 Xentry Diagnostics + SCN online
⚠️ Requires steering angle sensor calibration and wheel alignment after replacement.
Transmission Control Unit (TCU)3.5 hr R&Rsecurity gateway +1.5 hr▸ programming details
📍 Transmission housing, driver side near valve body
🔧 Xentry Diagnostics + SCN online
⚠️ 9G-TRONIC transmission. Requires transmission oil service after replacement. VIN-locked.
Climate Control Unit (CCU)3.0 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Behind dashboard center, above transmission tunnel
🔧 Xentry Diagnostics
⚠️ Multi-zone climate system. Requires refrigerant recovery/recharge if lines disconnected.
⚠️ Multi-contour seats with massage. Seat position relearn required after replacement.
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2026 Mercedes-Benz S580 4.0L V8 BiTurbo M176 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.