Every control module on the 2025-2026 Mercedes-Benz G580 EQ — 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) 3.2 hr R&R security gateway +1.0 hr ▸ programming details
📍 Steering column, integrated with steering gear
🔧 Xentry Diagnostics + Vediamo/Monaco
⚠️ Requires steering angle sensor calibration and SCN coding
Central Gateway Module (CGW) 2.8 hr R&R security gateway +1.5 hr ▸ programming details
📍 Behind dashboard, left side of steering column
🔧 Xentry Diagnostics + Vediamo/Monaco
⚠️ Security gateway; replacement requires dealer authorization and extensive recoding of all modules
Climate Control Unit (CCU) 2.5 hr R&R security gateway +0.8 hr ▸ programming details
📍 Behind dashboard, center console
🔧 Xentry Diagnostics + Vediamo/Monaco
⚠️ Controls HVAC system including heat pump; VIN-locked; SCN coding required
Transmission Control Unit (TCU) 2.2 hr R&R security gateway +0.8 hr ▸ programming details
📍 Left side of rear cargo area, behind trim panel
🔧 Xentry Diagnostics + Vediamo/Monaco
⚠️ Controls 2-speed reduction gearbox; VIN-locked; SCN coding required
4MATIC Control Unit (4M) 2.2 hr R&R security gateway +0.8 hr ▸ programming details
📍 Center tunnel, below rear seats
🔧 Xentry Diagnostics + Vediamo/Monaco
⚠️ Controls electric all-wheel drive distribution; VIN-locked; SCN coding required
Off-Road Control Unit (ORCU) 2.0 hr R&R security gateway +0.8 hr ▸ programming details
📍 Center tunnel, below center console
🔧 Xentry Diagnostics + Vediamo/Monaco
⚠️ Controls G-Turn, low-range mode, differential locks; VIN-locked; SCN coding required
Electronic Stability Program Control Unit (ESP) 2.0 hr R&R security gateway +0.8 hr ▸ programming details
📍 Front left side of engine compartment, mounted to ABS hydraulic unit
🔧 Xentry Diagnostics + Vediamo/Monaco
⚠️ Integrated with ABS hydraulic unit; requires brake bleed and SCN coding
MBUX Head Unit (MBUX) 2.0 hr R&R security gateway +1.0 hr ▸ programming details
📍 Center dashboard, integrated with touchscreen
🔧 Xentry Diagnostics + Vediamo/Monaco
⚠️ VIN-locked; requires SCN coding and online activation for navigation/services
DC/DC Converter (DCDC) 1.8 hr R&R security gateway +0.5 hr ▸ programming details
📍 Front right side of engine compartment
🔧 Xentry Diagnostics + Vediamo/Monaco
⚠️ High-voltage to 12V conversion; requires coding after replacement
Roof Signal Acquisition and Actuation Module (SAM-Roof) 1.8 hr R&R security gateway +0.8 hr ▸ programming details
📍 Headliner, above rear seats
🔧 Xentry Diagnostics + Vediamo/Monaco
⚠️ Controls interior lighting, sunroof (if equipped), rain sensor; VIN-locked
Intelligent Light System Control Unit (ILS) 1.8 hr R&R security gateway +0.8 hr ▸ programming details
📍 Behind front bumper, integrated with headlight assemblies
🔧 Xentry Diagnostics + Vediamo/Monaco
⚠️ Controls adaptive LED headlights; requires headlight aim calibration and SCN coding
Tailgate Control Module (TGM) 1.8 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Inside tailgate, behind trim panel
🔧 Xentry Diagnostics
⚠️ Controls power tailgate operation; requires calibration and coding
Adaptive Damping System Control Unit (ADS) 1.8 hr R&R security gateway +0.8 hr ▸ programming details
📍 Front left side of engine compartment
🔧 Xentry Diagnostics + Vediamo/Monaco
⚠️ Controls adaptive suspension; requires ride height calibration and SCN coding
Restraint Systems Control Unit (SRS) 1.5 hr R&R security gateway +0.8 hr ▸ programming details
📍 Center console, below MBUX controller
🔧 Xentry Diagnostics + Vediamo/Monaco
⚠️ VIN-locked; crash data must be cleared with factory tool; SCN coding mandatory
Instrument Cluster (IC) 1.5 hr R&R security gateway +1.0 hr ▸ programming details
📍 Dashboard, behind steering wheel
🔧 Xentry Diagnostics + Vediamo/Monaco
⚠️ VIN-locked; mileage programming requires dealer authorization; part of security triangle
Passenger Door Control Module (DCM-P) 1.5 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Inside passenger door, behind trim panel
🔧 Xentry Diagnostics
⚠️ Controls power windows, mirrors, locks; VIN-locked
Parktronic Control Unit (PTS) 1.5 hr R&R security gateway +0.5 hr ▸ programming details
📍 Rear cargo area, left side behind trim
🔧 Xentry Diagnostics + Vediamo/Monaco
⚠️ Controls parking sensors; requires sensor calibration and SCN coding
DISTRONIC Radar Sensor Control Unit (RSU) 1.5 hr R&R security gateway +1.0 hr ▸ programming details
📍 Front bumper, center behind grille
🔧 Xentry Diagnostics + Vediamo/Monaco
⚠️ Requires radar alignment with factory tool after replacement; SCN coding mandatory
Telematics Communication Module (TCM) 1.5 hr R&R security gateway +0.8 hr ▸ programming details
📍 Behind dashboard, center console area
🔧 Xentry Diagnostics + Vediamo/Monaco
⚠️ LTE/5G connectivity; requires online activation and subscription pairing
Front Camera Control Unit (FCU) 1.2 hr R&R security gateway +0.8 hr ▸ programming details
📍 Windshield, behind rearview mirror
🔧 Xentry Diagnostics + Vediamo/Monaco
⚠️ Lane keeping and traffic sign recognition; requires windshield calibration and SCN coding
Electronic Ignition Switch (EIS) 1.2 hr R&R security gateway +1.5 hr ▸ programming details
📍 Steering column, integrated with start button
🔧 Xentry Diagnostics + Vediamo/Monaco
⚠️ Key programming requires dealer tool; VIN-locked; forms security triangle with CGW and cluster
Trailer Module (TRM) 1.2 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Rear cargo area, right side behind trim
🔧 Xentry Diagnostics
⚠️ Controls trailer lighting and brake controller; VIN-locked
12V Battery Management Control Unit (12V-BMU) 1.0 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Front right side of engine compartment
🔧 Xentry Diagnostics
⚠️ Manages 12V auxiliary battery charging and health; VIN-locked
Passenger Seat Control Module (SCM-P) 1.0 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Under passenger seat
🔧 Xentry Diagnostics
⚠️ Controls power seat, heating, ventilation, massage; VIN-locked
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.