🌍 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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2005 MERCEDES-BENZ C350 W203

3.5L V6 M272•RWD•AUTOMATIC•gas•M272
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Every control module on the 2005-2007 Mercedes-Benz C350 W203 — 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 +0.6 hr▸ programming details
📍 Transmission bell housing, driver side
🔧 Star Diagnosis DAS/Xentry + SCN
⚠️ Requires transmission fluid change during R&R. SCN coding required.
Climate Control Module (CCM)2.0 hr R&Rdealer / factory tool +0.3 hr▸ programming details
📍 Behind center dash, above transmission tunnel
🔧 Star Diagnosis DAS/Xentry
⚠️ Dual-zone automatic climate control. Coding for refrigerant type and sensor calibration.
Electronic Ignition Switch (EIS)1.8 hr R&Rdealer / factory tool +1.2 hr▸ programming details
📍 Steering column, behind ignition lock cylinder
🔧 Star Diagnosis DAS/Xentry + SCN
⚠️ Critical security component. Requires key programming and SCN coding. Part of ECM-EIS-cluster security triangle. Steering lock motor often fails.
Electronic Stability Program / Anti-lock Brake System (ESP/ABS)1.5 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Engine bay, left front corner near fender
🔧 Star Diagnosis DAS/Xentry
⚠️ Brake bleeding required after replacement. Coding includes wheel sensor calibration.
Audio Gateway / COMAND (AGW/COMAND)1.5 hr R&Rdealer / factory tool +0.4 hr▸ programming details
📍 Center console, behind head unit trim
🔧 Star Diagnosis DAS/Xentry
⚠️ COMAND models have navigation. Coding required for feature activation. Fiber optic MOST bus connection.
Central Gateway (CGW)1.3 hr R&Rdealer / factory tool +0.6 hr▸ programming details
📍 Left footwell, integrated with SAM-F or separate module
🔧 Star Diagnosis DAS/Xentry + SCN
⚠️ CAN bus gateway. Not present on all early 2005 models. VIN coding required when present.
Signal Acquisition Module - Rear (SAM-R)1.2 hr R&Rdealer / factory tool +0.7 hr▸ programming details
📍 Trunk, right side panel behind trim
🔧 Star Diagnosis DAS/Xentry + SCN
⚠️ Controls rear lighting, fuel pump relay, trunk functions. VIN-locked. SCN coding mandatory.
Motor Electronics (ME-SFI 2.7)1.2 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Engine bay, left side firewall near brake booster
🔧 Star Diagnosis DAS/Xentry + SCN
⚠️ VIN-locked; part of EIS security triangle. SCN coding mandatory after replacement.
Instrument Cluster (IC)1.0 hr R&Rdealer / factory tool +0.6 hr▸ programming details
📍 Dashboard, behind instrument panel
🔧 Star Diagnosis DAS/Xentry + SCN
⚠️ VIN-locked. Mileage programming required. Part of security triangle. Used clusters require dealer authorization.
Door Control Module (DCM)1.0 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Inside each door, lower section behind trim panel
🔧 Star Diagnosis or Autel
⚠️ Per-door module. Controls windows, mirrors, locks. Window auto-up/down relearn required.
Supplemental Restraint System Control Unit (SRS)0.8 hr R&Rdealer / factory tool +0.4 hr▸ programming details
📍 Center console, under front seats mounting area
🔧 Star Diagnosis DAS/Xentry
⚠️ Battery disconnect mandatory. Wait 90 seconds before work. VIN coding required.
Adaptive Damping System Control Unit (ADS)0.8 hr R&Rdealer / factory tool +0.4 hr▸ programming details
📍 Trunk, right side panel or under rear seat
🔧 Star Diagnosis DAS/Xentry
⚠️ Optional Agility Control suspension. Requires ride height sensor calibration.
Tele Aid Module (TAM)0.8 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Trunk, left side panel or under rear shelf
🔧 Star Diagnosis DAS/Xentry
⚠️ Optional equipment. Requires cellular network activation. 2G network obsolescence issue in US.
Pre-Safe Control Unit (PSM)0.7 hr R&Rdealer / factory tool +0.4 hr▸ programming details
📍 Under front passenger seat or center console area
🔧 Star Diagnosis DAS/Xentry
⚠️ Optional Pre-Safe system. Integrates with SRS and ESP. Coding required for sensor calibration.
Parktronic Control Unit (PTS)0.7 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Trunk, left side panel or behind rear bumper
🔧 Star Diagnosis or Autel
⚠️ Optional equipment. Sensor calibration required after replacement.
Fuel Pump Control Module (FPCM)0.6 hr R&Rrelearn only +0.2 hr▸ programming details
📍 Trunk, right side near SAM-R or integrated into SAM-R
🔧 Star Diagnosis or Autel
⚠️ Often integrated into SAM-R relay board. Adaptation relearn after replacement.
Seat Control Module (SCM)0.6 hr R&Raftermarket tool +0.2 hr▸ programming details
📍 Under driver and passenger seats
🔧 Star Diagnosis or Autel
⚠️ Controls power seat, memory, heating. Per-seat module. Basic adaptation coding.
Bi-Xenon Control Unit (XCU)0.5 hr R&Raftermarket tool +0.2 hr▸ programming details
📍 Behind each headlight assembly (left and right)
🔧 Star Diagnosis or Autel
⚠️ Only on Xenon-equipped vehicles. Per-side module. Basic adaptation for leveling sensor.
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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