Unlock any single procedure for $3 — or become the founding sponsor and we generate every common job on this GLC43 AMG X254, with your name on each one.
Fitment notes: AGM required for start-stop system; battery located in engine compartment; hybrid vehicle with 48V mild hybrid system requires specific AGM battery
As an Amazon Associate, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Every control module on the 2025 Mercedes-Benz GLC43 AMG X254 — 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.
Transmission Control Unit (TCU)3.5 hr R&Rsecurity gateway +1.0 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.
Electric Power Steering Control Unit (EPS)2.5 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Steering column, integrated with steering rack
🔧 Xentry Diagnostics + SCN online
⚠️ Requires steering angle sensor calibration and road test after replacement.
Climate Control Unit (CCU)2.0 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Behind center dashboard, above center console
🔧 Xentry Diagnostics
⚠️ Requires HVAC actuator calibration after replacement.
4MATIC Control Unit (4M)2.0 hr R&Rsecurity gateway +1.0 hr▸ programming details
⚠️ Memory seat functions. Basic adaptation possible with aftermarket tools.
Wireless Charging Control Unit (WCC)0.5 hr R&Raftermarket tool +0.2 hr▸ programming details
📍 Center console, integrated with charging pad
🔧 Xentry or Autel MaxiSys
⚠️ Optional equipment. Basic adaptation possible with aftermarket tools.
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 2025 Mercedes-Benz GLC43 AMG X254 2.0L I4 Turbo Hybrid 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.