🌍 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.

1990 MERCEDES-BENZ G-CLASS

2.3 L M102 fuel-injected I4 (230 GE), 125 PS4WDgas
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Dead battery / stuck in Park? Emergency neutral procedure for this G-Class
Every control module on the 1990-1995 Mercedes-Benz G-Class — 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.
Instrument Cluster (IC)2.0 hr R&Rrelearn only +0.3 hr▸ programming details
📍 Dashboard behind instrument panel
🔧 Mercedes SDS
⚠️ Electronic odometer introduced; mileage programming requires dealer tool. Some models still mechanical.
Climate Control Module (KE)1.8 hr R&Rno coding
📍 Behind center dashboard HVAC controls
⚠️ Electronic climate control standard on most trims; no coding required.
Anti-Lock Brake System Control Unit (ABS)1.5 hr R&Rno coding
📍 Engine bay, driver side inner fender or firewall
⚠️ Bosch ABS 2E or ABS 5; no coding required. Fault codes via blink or SDS.
Transmission Control Unit (TCU)1.5 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Under driver seat or center console tunnel
🔧 Mercedes HHT or SDS
⚠️ Electronic 4-speed automatic (722.3/722.4). Shift point adaptation available; requires dealer tool for proper setup.
Adaptive Damping System Control Unit (ADS)1.3 hr R&Rno coding
📍 Rear cargo area or under rear seat
⚠️ Optional on later models; electronically adjustable dampers. No coding required, basic diagnostics via SDS.
Engine Control Unit (ECU)1.2 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Engine bay, driver side firewall or under passenger seat
🔧 Mercedes HHT or Star Diagnosis System (SDS)
⚠️ Later KE-Jetronic or early LH-Jetronic systems. Basic adaptation for idle and fuel trim available via dealer tool.
Supplemental Restraint System Control Unit (SRS)1.0 hr R&Rrelearn only +0.3 hr▸ programming details
📍 Center console tunnel or under front seats
🔧 Mercedes SDS
⚠️ Introduced early 1990s. Requires fault code clearing and system verification after replacement; no true coding but dealer tool recommended.
Drive Authorization System (DAS)0.8 hr R&Rdealer / factory tool +1.0 hr▸ programming details
📍 Integrated with ignition switch or near steering column
🔧 Mercedes SDS
⚠️ Early immobilizer system introduced mid-1990s. Key programming requires dealer tool; transponder-based.
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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