🌍 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.

2017 MERCEDES-BENZ S450 W222

3.0L V6 BiTurbo M276RWDAUTOMATICgasM276.823turbo
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Dead battery / stuck in Park? Emergency neutral procedure for this S450 W222
Every control module on the 2015-2017 Mercedes-Benz S450 W222 — 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)3.5 hr R&Rdealer / factory tool +1.0 hr▸ programming details
📍 Transmission valve body, inside transmission pan
🔧 Xentry/DAS with SCN
⚠️ Requires transmission fluid change, adaptation, and SCN coding. VIN-locked.
Electric Power Steering Control Unit (EPS)2.5 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Steering column, integrated with steering gear
🔧 Xentry/DAS with SCN
⚠️ Requires steering angle sensor calibration and SCN coding after replacement.
COMAND Head Unit (COMAND)2.5 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Dashboard, center stack behind trim panel
🔧 Xentry/DAS with SCN
⚠️ VIN-locked. Navigation and vehicle configuration stored. SCN coding required.
Central Gateway Module (CGW)2.0 hr R&Rdealer / factory tool +1.5 hr▸ programming details
📍 Dashboard, behind center lower trim panel above footwell
🔧 Xentry/DAS with SCN
⚠️ Security gateway. Replacement requires extensive recoding of all networked modules. Dealer-only.
Climate Control Unit (CCU)2.0 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Dashboard, behind center HVAC control panel
🔧 Xentry/DAS
⚠️ Requires adaptation for dual-zone or rear climate functions.
Electronic Ignition Switch (EIS)1.8 hr R&Rdealer / factory tool +1.2 hr▸ programming details
📍 Steering column, integrated with ignition lock housing
🔧 Xentry/DAS with SCN
⚠️ Security triangle component (EIS-ECM-IC). All keys must be reprogrammed. VIN-locked.
Electronic Stability Program Control Unit (ESP/ABS)1.5 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Engine compartment, left front near brake master cylinder
🔧 Xentry/DAS with SCN
⚠️ Requires brake bleeding after replacement. SCN coding mandatory.
Signal Acquisition and Actuation Module Front (SAM-F)1.5 hr R&Rdealer / factory tool +1.0 hr▸ programming details
📍 Engine compartment, left side fuse box
🔧 Xentry/DAS with SCN
⚠️ Controls front lighting, wipers, horn. VIN-locked, requires extensive SCN coding.
Instrument Cluster (IC)1.5 hr R&Rdealer / factory tool +1.0 hr▸ programming details
📍 Dashboard, behind instrument panel
🔧 Xentry/DAS with SCN
⚠️ VIN-locked, mileage stored. Requires SCN coding and security triangle pairing.
DISTRONIC Radar Sensor Control Unit (RSU)1.5 hr R&Rdealer / factory tool +1.0 hr▸ programming details
📍 Front bumper, center behind grille
🔧 Xentry/DAS with SCN
⚠️ Requires radar alignment with special tool and SCN coding. Safety-critical component.
4MATIC Control Unit (4M)1.5 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Under vehicle, near transfer case (4MATIC models only)
🔧 Xentry/DAS
⚠️ 4MATIC models only. Requires adaptation after replacement.
Surround View Camera Control Unit (CCU)1.2 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Trunk, center behind trim panel
🔧 Xentry/DAS
⚠️ Requires camera calibration and alignment procedure after replacement.
Motor Electronics Control Unit (ME-ECU)1.2 hr R&Rdealer / factory tool +1.0 hr▸ programming details
📍 Engine compartment, left side firewall behind air filter housing
🔧 Xentry/DAS with SCN
⚠️ VIN-locked, requires SCN coding and EIS pairing. Component protection active.
Restraint Systems Control Unit (SRS)1.0 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Center console, beneath front center armrest
🔧 Xentry/DAS with SCN
⚠️ VIN-locked, crash data stored. Must verify all airbag components after coding.
Door Control Module (DCM)1.0 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Inside each door (four modules total)
🔧 Xentry or Autel MaxiSys
⚠️ Window and mirror initialization required after replacement.
Intelligent Light System Control Unit (ILS)1.0 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Each headlight assembly (left and right)
🔧 Xentry or Autel MaxiSys
⚠️ Headlight range adjustment required after replacement.
Pre-Safe Control Unit (PSM)1.0 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Center console, integrated with SRS module
🔧 Xentry/DAS with SCN
⚠️ Safety-critical. Requires SCN coding and system verification.
Airmatic Control Unit (ADS)1.0 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Trunk, right side near air suspension compressor
🔧 Xentry/DAS
⚠️ Requires ride height calibration and adaptation after replacement.
Telematics Communication Module (TCM)1.0 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Trunk, left side panel behind trim
🔧 Xentry/DAS with SCN
⚠️ Requires Mercedes me account reactivation and cellular provisioning after replacement.
Fuel Pump Control Module (FPCM)0.8 hr R&Raftermarket tool +0.2 hr▸ programming details
📍 Trunk, right side near fuel tank
🔧 Xentry or Autel MaxiSys
⚠️ Controlled by SAM-R, minimal coding required.
Parktronic Control Unit (PTS)0.8 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Trunk, left side behind trim panel
🔧 Xentry or Autel MaxiSys
⚠️ Sensor calibration required after replacement.
Seat Control Module (SCM)0.8 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Under each front seat (left and right)
🔧 Xentry or Autel MaxiSys
⚠️ Memory seat positions lost, requires customer reprogramming.
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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