🌍 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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No torque specs for this vehicle.
No fluid specs for this vehicle.
No DTC data for this vehicle.
No battery specs for this vehicle.
Every control module on the 1992-1995 Mercedes-Benz S420 W140 — 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)2.5 hr R&Rrelearn only +0.4 hr▸ programming details
📍 Transmission tunnel, center console area behind shifter trim
📍 Steering column, integrated with ignition lock housing
🔧 Star Diagnosis SDS
⚠️ Immobilizer system; key coding required after replacement; steering column trim removal required; not to be confused with diagnostic software also called DAS
Supplemental Restraint System Control Unit (SRS)1.8 hr R&Rno coding
📍 Center console, beneath front armrest/shifter assembly
Anti-Lock Brake System Control Unit (ABS)1.5 hr R&Rno coding
📍 Engine compartment, left front inner fender near brake master cylinder
⚠️ Bosch ABS/ASR system; brake bleeding required after hydraulic unit service; control unit replacement typically plug-and-play
Climate Control Module (KE)1.5 hr R&Rno coding
📍 Dashboard center, behind climate control panel
⚠️ Self-calibrating system; may require actuator relearn cycle after installation (automatic process)
Engine Control Unit (ECU)1.2 hr R&Rrelearn only +0.3 hr▸ programming details
📍 Engine compartment, left side firewall behind battery
🔧 HHT or Star Diagnosis SDS
⚠️ Bosch KE-Jetronic with electronic control; idle adaptation and basic fault code clearing only; no true reprogramming capability
Instrument Cluster (IC)1.0 hr R&Rrelearn only +0.2 hr▸ programming details
📍 Dashboard, behind steering wheel
🔧 HHT or Star Diagnosis SDS
⚠️ Mileage stored in cluster; replacement requires mileage programming to match vehicle records; steering wheel removal not required on W140
Adaptive Damping System Control Unit (ADS)0.8 hr R&Rno coding
📍 Trunk, left side panel near wheel well
⚠️ Optional equipment; not present on all S420 models; controls electronic damper adjustment
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.
No maintenance entries for this vehicle.
🌧️ Wiper Blades
1993single front blade
26″
Front (single blade)
Attachmenthook
This generation uses one Monoblade-style front wiper that sweeps the whole windshield — don't buy a pair.
📝 W140 sedan, no rear wiper Single front Monoblade-style wiper.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 1993 Mercedes-Benz S420 W140 4.2L V8 M119 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years.