🌍 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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2018 MERCEDES-BENZ CLS400 C218

3.0L V6 BiTurbo M276•RWD•AUTOMATIC•gas•M276.850•turbo
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Dead battery / stuck in Park? Emergency neutral procedure for this CLS400 C218 →
Every control module on the 2015-2018 Mercedes-Benz CLS400 C218 — 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.
Electronic Transmission Control (ETC)2.5 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Transmission housing, driver side
🔧 Xentry Diagnostics + SCN coding
⚠️ Requires transmission fluid change during R&R; adaptive values must be reset.
Central Gateway Module (CGW)2.0 hr R&Rdealer / factory tool +1.5 hr▸ programming details
📍 Dashboard, behind instrument cluster
🔧 Xentry Diagnostics + SCN coding
⚠️ Security gateway; replacement requires extensive recoding of all networked modules. Dealer-only procedure.
COMAND Online Head Unit (COMAND)2.0 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Dashboard, center stack behind trim
🔧 Xentry Diagnostics + SCN coding
⚠️ VIN-locked; navigation and audio settings require reconfiguration; some aftermarket tools can code.
Electric Power Steering Control Unit (EPS)1.8 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Steering column, lower section
🔧 Xentry Diagnostics + SCN coding
⚠️ Requires steering angle sensor calibration and road test after replacement.
Electronic Stability Program Control Unit (ESP)1.5 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Engine compartment, left front near fender
🔧 Xentry Diagnostics + SCN coding
⚠️ Integrated ABS/ESP unit; requires brake bleeding and system calibration after replacement.
Signal Acquisition Module Rear (SAM-R)1.5 hr R&Rdealer / factory tool +1.0 hr▸ programming details
📍 Trunk, right side panel behind trim
🔧 Xentry Diagnostics + SCN coding
⚠️ Controls rear lighting, fuel pump relay, trunk functions; VIN-locked.
Intelligent Light System Control Unit (ILS)1.5 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Engine compartment, integrated in headlight assemblies
🔧 Xentry or Autel MaxiSys
⚠️ Adaptive LED headlights; requires headlight aim calibration after replacement.
Climate Control Module (CCM)1.5 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Dashboard, center stack behind HVAC controls
🔧 Xentry or Autel MaxiSys
⚠️ Requires recalibration of blend doors and temperature sensors after replacement.
Electronic Ignition Switch (EIS)1.5 hr R&Rdealer / factory tool +1.5 hr▸ programming details
📍 Steering column, upper shroud
🔧 Xentry Diagnostics + SCN coding
⚠️ Part of security triangle with ME and cluster; all keys must be reprogrammed; requires online authorization.
Door Control Module Passenger (DCM-P)1.2 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Passenger door, behind door panel
🔧 Xentry or Autel MaxiSys
⚠️ Window auto function requires relearn procedure.
Motor Electronics (ME)1.2 hr R&Rdealer / factory tool +1.0 hr▸ programming details
📍 Engine compartment, left side firewall near brake booster
🔧 Xentry Diagnostics + SCN coding
⚠️ VIN-locked; requires SCN coding and EIS pairing. Part of security triangle with EIS and cluster.
Airmatic Control Unit (ADS)1.2 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Trunk, right side panel near SAM-R
🔧 Xentry Diagnostics + SCN coding
⚠️ Requires ride height calibration and road test; optional equipment on CLS400.
Instrument Cluster (IC)1.0 hr R&Rdealer / factory tool +1.0 hr▸ programming details
📍 Dashboard, behind steering wheel
🔧 Xentry Diagnostics + SCN coding
⚠️ VIN-locked; mileage programming requires dealer authorization; part of security triangle.
Audio Gateway (AGW)1.0 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Trunk, left side panel behind trim
🔧 Xentry or Autel MaxiSys
⚠️ Handles audio signal processing; verify all speakers function after replacement.
DISTRONIC PLUS Radar Sensor (RSU)1.0 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Front bumper, center behind grille
🔧 Xentry Diagnostics + SCN coding
⚠️ Requires radar alignment with special tool; optional equipment; bumper removal required.
Telematics Communication Module (TCM)1.0 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Trunk, left side panel behind trim
🔧 Xentry Diagnostics + SCN coding
⚠️ Requires Mercedes me connect subscription reactivation; VIN-locked.
Supplemental Restraint System Control Unit (SRS)0.8 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Center console, beneath center armrest
🔧 Xentry Diagnostics + SCN coding
⚠️ VIN-locked; crash data must be cleared; wait 10 minutes after battery disconnect before handling.
Parktronic Control Unit (PTS)0.8 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Trunk, left side panel behind trim
🔧 Xentry or Autel MaxiSys
⚠️ Requires sensor calibration after replacement.
Seat Control Module Passenger (SCM-P)0.8 hr R&Raftermarket tool +0.2 hr▸ programming details
📍 Passenger seat, under seat frame
🔧 Xentry or Autel MaxiSys
⚠️ Memory seat positions must be reprogrammed by user after replacement.
Rear View Camera Control Unit (CCU)0.5 hr R&Raftermarket tool +0.2 hr▸ programming details
📍 Trunk lid, integrated with camera assembly
🔧 Xentry or Autel MaxiSys
⚠️ Calibration usually automatic; verify COMAND display function.
Fuel Pump Control Module (FPCM)0.5 hr R&Raftermarket tool +0.2 hr▸ programming details
📍 Trunk, right side panel near SAM-R
🔧 Xentry or Autel MaxiSys
⚠️ Controlled by SAM-R; verify fuel pressure after replacement.
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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