Fitment notes: European spec battery; DIN standard 75Ah may also be used
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Every control module on the 1981-1989 Mercedes-Benz G-Class — where it lives, replacement time, and what it takes to program a replacement.
Instrument Cluster (IC)2.0 hr R&Rno coding
📍 Dashboard behind instrument panel
⚠️ Electromechanical; no electronic coding. Odometer is mechanical.
Climate Control Module (KE)1.8 hr R&Rno coding
📍 Behind center dashboard HVAC controls
⚠️ Electronic climate control on higher trims; basic electronic control, 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 2 system introduced mid-1980s; no coding required, fault code reading via LED blink codes or HHT.
Engine Control Unit (ECU)1.2 hr R&Rrelearn only +0.3 hr▸ programming details
📍 Engine bay, driver side firewall or under passenger seat
🔧 Bosch KTS or Mercedes HHT
⚠️ Early KE-Jetronic systems; mostly mechanical with electronic idle control. Limited coding—primarily idle adaptation via dealer tool or jumper configuration.
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.
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 1985 Mercedes-Benz G-Class 2.3L I4 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.