Fitment notes: AGM battery required for start-stop system; located in engine compartment
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Every control module on the 2024-2026 Mercedes-Benz CLA35 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.
Transmission Control Unit (TCU)2.5 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Transmission bell housing, driver side
🔧 Xentry Diagnostics + SCN online
⚠️ 8-speed DCT (8G-DCT) with updated software. Requires transmission adaptation procedure after coding. Fluid change recommended during R&R.
MBUX Head Unit (HU/MBUX)2.0 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Center dashboard, integrated with touchscreen
🔧 Xentry Diagnostics + SCN online
⚠️ MBUX generation 2 with enhanced processing. Requires online account pairing and navigation license transfer. Firmware update time-consuming.
Electric Power Steering Control Unit (EPS)1.8 hr R&Rsecurity gateway +0.8 hr▸ programming details
⚠️ 5G-capable module (market dependent). Requires Mercedes me account re-pairing and SIM activation.
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 CLA35 AMG 2.0L I4 Turbo M260 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.