Fitment notes: OEM size: 12V ~12Ah AGM auxiliary battery (Mercedes A-series aux, e.g. A0009822108 / A0009829608 type) · Purpose: On-board voltage support/stabilization of the 12V electrical system during ECO start/stop restarts and high electrical load events, and backup power for critical control units
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Every control module on the 2021-2026 Mercedes-Benz SL63 AMG — 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)2.8 hr R&Rsecurity gateway +1.0 hr▸ programming details
⚠️ Controls dual fuel pumps. Requires fuel system prime 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 SL63 AMG 4.0L V8 BiTurbo M177 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years.