🌍 International coverage, work in progress. This Russian-market vehicle is part of our hand-curated international catalog. We are filling in labor times, torque specs and fluids as fast as we can verify them, so some numbers may be missing or marked estimated for now. Do you work on these vehicles in the EU, Russia, or the JDM scene? Help us get it right: send real shop times or corrections to [email protected], or request the data you need and it joins the verification queue.
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2026 MERCEDES-BENZ CLA45 AMG

2.0L I4 Turbo M139•FWD•AUTOMATIC•gas•M139•turbo
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Every control module on the 2020-2026 Mercedes-Benz CLA45 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 +1.2 hr▸ programming details
📍 Transmission bell housing, driver side
🔧 Xentry with MBD account and SCN authorization
⚠️ AMG Speedshift DCT 8-speed (2020+). Requires transmission fluid drain. Enhanced security, online authorization mandatory.
Central Gateway Module (CGW)2.0 hr R&Rsecurity gateway +2.0 hr▸ programming details
📍 Dashboard, center behind instrument cluster
🔧 Xentry with MBD account and SCN authorization
⚠️ Enhanced security gateway. Replacement requires dealer-level authorization and complete vehicle reconfiguration.
4MATIC Control Unit (4M)2.0 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Transmission tunnel, center under vehicle
🔧 Xentry with MBD account and SCN authorization
⚠️ CLA45 4MATIC+ models. Enhanced all-wheel drive system. Online authorization required.
Electric Power Steering Control Unit (EPS)1.8 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Steering column, below instrument panel
🔧 Xentry with MBD account and SCN authorization
⚠️ Steering wheel removal required. Enhanced security. Steering angle sensor calibration mandatory.
Climate Control Module (CCM)1.8 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Dashboard, center behind HVAC controls
🔧 Xentry or Autel MaxiSys Ultra
⚠️ Basic adaptation possible with high-end aftermarket tools. Full feature coding requires Xentry.
MBUX Head Unit (MBUX)1.8 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Center dashboard, behind display screen
🔧 Xentry with MBD account and SCN authorization
⚠️ MBUX system with enhanced features. Online authorization required for full feature activation.
Electronic Ignition Switch (EIS)1.5 hr R&Rsecurity gateway +2.0 hr▸ programming details
📍 Steering column, ignition switch housing
🔧 Xentry with MBD account and SCN authorization
⚠️ Part of enhanced security triangle. All keys must be reprogrammed. Dealer-only procedure with online authorization.
Electronic Stability Program Control Unit (ESP/ABS)1.5 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Engine bay, left front corner near fender
🔧 Xentry with MBD account and SCN authorization
⚠️ Integrated hydraulic unit. Brake bleeding required. Enhanced security gateway protection.
Motor Electronics / Engine Control Unit (ME/ECU)1.2 hr R&Rsecurity gateway +1.2 hr▸ programming details
📍 Engine bay, left side firewall near brake master cylinder
🔧 Xentry with MBD account and SCN authorization
⚠️ M139 2.0L turbo engine (CLA45 S). Enhanced security gateway protection. VIN-locked with online authorization required.
Radar Sensor / DISTRONIC Control Unit (RSU)1.2 hr R&Rsecurity gateway +1.5 hr▸ programming details
📍 Front bumper, center behind grille
🔧 Xentry with MBD account and SCN authorization
⚠️ Enhanced adaptive cruise and active brake assist. Radar alignment mandatory. Requires alignment rack and targets.
Signal Acquisition and Actuation Module - Rear (SAM-R)1.2 hr R&Rsecurity gateway +1.2 hr▸ programming details
📍 Trunk, left side panel behind trim
🔧 Xentry with MBD account and SCN authorization
⚠️ Controls rear electrical functions. Enhanced VIN-locking with online authorization.
Driver Assistance Package Control Unit (DAP)1.2 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Dashboard, center behind instrument cluster area
🔧 Xentry with MBD account and SCN authorization
⚠️ Coordinates multiple driver assistance systems. Online authorization required.
Camera Control Unit / Surround View (CCU)1.0 hr R&Rdealer / factory tool +1.0 hr▸ programming details
📍 Trunk, near license plate area; additional cameras in mirrors and front
🔧 Xentry with calibration
⚠️ 360-degree camera system. Multi-camera calibration required after replacement. Requires alignment mat.
Instrument Cluster (IC)1.0 hr R&Rsecurity gateway +1.2 hr▸ programming details
📍 Dashboard, behind steering wheel
🔧 Xentry with MBD account and SCN authorization
⚠️ Digital cluster. Part of security triangle. Mileage programming requires dealer authorization with online verification.
Door Control Module (DCM)1.0 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Inside each door, lower section
🔧 Xentry or Autel MaxiSys Ultra
⚠️ Controls windows, mirrors, locks per door. Window initialization required after replacement.
Restraint Systems Control Unit (SRS)0.8 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Center console, beneath center armrest
🔧 Xentry with MBD account and SCN authorization
⚠️ Battery disconnect required. Enhanced security, online authorization mandatory for crash data management.
Tailgate Control Module (TGM)0.8 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Trunk lid, behind trim panel
🔧 Xentry or Autel MaxiSys Ultra
⚠️ Power trunk models. Position learning required after replacement.
Fuel Pump Control Module (FPCM)0.8 hr R&Raftermarket tool +0.2 hr▸ programming details
📍 Trunk, under floor panel near fuel tank
🔧 Xentry or Autel MaxiSys Ultra
⚠️ Basic adaptation possible with high-end aftermarket tools.
Intelligent Light System Control Unit (ILS)0.8 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Engine bay, behind each headlight assembly
🔧 Xentry with SCN coding
⚠️ LED or Multibeam LED system. Headlight range calibration and matrix function coding required.
Telematics Communication Module (TCM)0.8 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Trunk, right side panel or under rear seat
🔧 Xentry with MBD account and SCN authorization
⚠️ Mercedes me connect system. Requires subscription activation and online authorization after coding.
Parktronic Control Unit (PTS)0.7 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Trunk, right side panel
🔧 Xentry or Autel MaxiSys Ultra
⚠️ Parking sensor system. Calibration recommended after replacement.
Seat Control Module (SCM)0.6 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Under driver and passenger seats
🔧 Xentry or Autel MaxiSys Ultra
⚠️ Memory seat and AMG performance seats. Basic adaptation possible with high-end 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.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years.
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