Fitment notes: OEM size: 12V 12Ah AGM (Mercedes auxiliary type, e.g. A000 982 xx xx) · Location: engine bay, right side near the firewall/cowl area (behind the fender liner on some builds); main 12V AGM sits in the trunk floor well · Purpose: voltage support / backup supply for critical electronics during start-stop and hybrid load transients
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Every control module on the 2024-2026 Mercedes-Benz C63 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)3.5 hr R&Rsecurity gateway +1.5 hr▸ programming details
📍 Steering column, integrated with steering rack assembly
⚠️ AMG Performance seats. Requires variant coding for memory and massage functions.
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 C63 AMG 2.0L I4 Turbo Hybrid M139 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years.