🌍 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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2020 MERCEDES-BENZ GLB35 AMG

2.0L Turbo I4•AWD•DCT•gas•M260•turbo
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Every control module on the 2020-2026 Mercedes-Benz GLB35 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
📍 Steering column, integrated with steering rack
🔧 Xentry Diagnostics + SCN online
⚠️ Requires steering angle sensor calibration and VIN coding. Wheel alignment mandatory after replacement.
Transmission Control Unit (TCU)2.5 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Transmission housing, driver side
🔧 Xentry Diagnostics + SCN online
⚠️ 8-speed dual-clutch (8G-DCT). Requires transmission fluid change during R&R. VIN-locked SCN coding required.
4MATIC Control Unit (4M)2.0 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Transmission tunnel, center rear
🔧 Xentry Diagnostics + SCN online
⚠️ AMG Performance 4MATIC+ with variable torque distribution. VIN-locked.
Climate Control Unit (CCU)1.8 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Dashboard, behind center HVAC controls
🔧 Xentry Diagnostics
⚠️ Dual-zone automatic climate. Requires actuator calibration after replacement.
Electronic Stability Program Control Unit (ESP/ABS)1.5 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Engine bay, left front corner near fender
🔧 Xentry Diagnostics + SCN online
⚠️ Integrated hydraulic unit. Brake bleeding required after replacement. VIN-locked.
Electronic Ignition Switch (EIS)1.5 hr R&Rsecurity gateway +1.5 hr▸ programming details
📍 Steering column, upper shroud
🔧 Xentry Diagnostics + SCN online
⚠️ Security triangle component (EIS-ECM-IC). Key programming and VIN coding mandatory. All keys must be present.
Central Gateway Module (CGW)1.5 hr R&Rsecurity gateway +1.5 hr▸ programming details
📍 Dashboard, behind center lower trim panel
🔧 Xentry Diagnostics + SCN online
⚠️ Security gateway enforces authentication. Replacement requires full vehicle configuration coding and all module re-authorization.
Radar Sensor / DISTRONIC Control Unit (RSU)1.5 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Front bumper, center behind grille
🔧 Xentry Diagnostics + SCN online
⚠️ Adaptive cruise control and collision prevention. Requires radar alignment with special target after replacement.
MBUX Head Unit (HU/MBUX)1.5 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Dashboard, center stack
🔧 Xentry Diagnostics + SCN online
⚠️ 10.25-inch touchscreen. VIN-locked, requires online activation and user account transfer.
Tailgate Control Module (TGM)1.2 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Liftgate, left side inner panel
🔧 Xentry Diagnostics
⚠️ Power liftgate with hands-free open. Requires position calibration after replacement.
Rear Signal Acquisition and Actuation Module (SAM-R)1.2 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Rear cargo area, left side panel
🔧 Xentry Diagnostics + SCN online
⚠️ Controls rear lighting, fuel pump relay, trailer module interface. VIN-locked.
Camera Control Unit / Surround View (CCU)1.2 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Headliner, above rearview mirror
🔧 Xentry Diagnostics
⚠️ 360-degree camera system. Requires camera calibration and alignment procedure.
Motor Electronics / Engine Control Unit (ME/ECU)1.2 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Engine bay, left side firewall near brake booster
🔧 Xentry Diagnostics + SCN online
⚠️ VIN-locked, requires SCN coding and online authorization from Mercedes servers. EIS security triangle pairing mandatory.
Instrument Cluster (IC)1.0 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Dashboard, behind steering wheel
🔧 Xentry Diagnostics + SCN online
⚠️ Digital cluster. VIN-locked, mileage programming requires dealer authorization and legal documentation.
Intelligent Light System Control Unit (ILS)1.0 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Each headlight assembly (left and right)
🔧 Xentry Diagnostics
⚠️ Multibeam LED headlights. Requires headlight aim calibration after replacement.
Door Control Module (DCM)1.0 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Each door (4 total), lower door panel
🔧 Xentry Diagnostics or Autel
⚠️ Controls windows, mirrors, locks per door. Window auto-up/down relearn required.
Adaptive Damping System Control Unit (ADS)1.0 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Rear cargo area, under floor panel
🔧 Xentry Diagnostics + SCN online
⚠️ AMG Ride Control suspension. Requires ride height calibration and damper adaptation.
Parktronic Control Unit (PTS)0.8 hr R&Rdealer / factory tool +0.3 hr▸ programming details
📍 Rear bumper, center behind trim
🔧 Xentry Diagnostics
⚠️ Parking sensors front and rear. Sensor calibration required after replacement.
Restraint Systems Control Unit (SRS)0.8 hr R&Rsecurity gateway +0.5 hr▸ programming details
📍 Center console, beneath front armrest
🔧 Xentry Diagnostics + SCN online
⚠️ VIN-locked. Requires crash data clearing and component coding after replacement.
Seat Control Module (SCM)0.8 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Under each front seat (driver and passenger)
🔧 Xentry Diagnostics or Autel
⚠️ AMG sport seats with memory. Seat position relearn required after replacement.
Telematics Communication Module (TCM)0.8 hr R&Rsecurity gateway +0.5 hr▸ programming details
📍 Rear cargo area, right side panel near antenna
🔧 Xentry Diagnostics + SCN online
⚠️ LTE module for Mercedes me connect. Requires subscription activation after replacement.
Fuel Pump Control Module (FPCM)0.5 hr R&Raftermarket tool +0.2 hr▸ programming details
📍 Under rear seat, fuel tank access panel
🔧 Xentry Diagnostics or Autel
⚠️ Controls high-pressure fuel pump for M260 turbo engine. Basic adaptation only.
AMG Track Pace Module (ATP)no coding
📍 Integrated within MBUX head unit
⚠️ Software feature within MBUX, not a separate module. Activated via coding if equipped.
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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