🏷️ Basic Information Identification Make: Mercedes-Benz Model: 190E Year: 1990 Codes Chassis Code: W201 👋 Introduction Market Position Positioning: Entry-level luxury sedan that offered Mercedes-Benz quality and engineering at a more accessible price point. Competitive Analysis Competitors: BMW 3 Series (E30), Audi 80/90, Volvo 240/740, Acura Integra. Key Features Design: Boxy, functional design by Bruno Sacco, emphasizing safety and aerodynamics for its era. Engineering: Robust construction, excellent ride and handling balance, typical Mercedes-Benz build quality. Manual Value Purpose: Essential resource for owners and technicians seeking to maintain, diagnose, and repair the 1990 Mercedes-Benz 190E. 📋 Manual Details Coverage Areas Primary Coverage: Service and Repair Secondary Coverage: Maintenance, Troubleshooting, Diagnostics, Electrical Diagrams Page Count Estimated Pages: 1000+ Manual Type Type: Service and Repair Manual Software Language Language: English Format Format: Software (Digital Download) 📖 Manual Coverage Systems Covered Engine Systems: Engine mechanical, fuel injection (Bosch KE-Jetronic), ignition, cooling, lubrication, exhaust Drivetrain Systems: Manual and automatic transmissions, clutch, driveshafts, differential Suspension Steering: Front and rear suspension, steering gear, power steering system Braking Systems: Front and rear brakes (discs), ABS (Anti-lock Braking System), brake hydraulics Electrical Systems: Battery, charging system, starter, lighting, instrumentation, body electronics, wiring diagrams Body Chassis: Body panels, doors, windows, interior trim, chassis components Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks and top-offs Repair Overhaul: Engine overhaul, transmission rebuild, brake system repair, suspension component replacement Diagnostics Troubleshooting: Step-by-step diagnostic procedures for common and complex issues, fault code interpretation Special Tools: Identification and usage of specialized tools required for specific repairs Technical Depth Depth: Comprehensive (from basic maintenance to complete engine and transmission rebuilds) 📊 Manual Specifications File Format File Type: Executable software or PDF Print Quality Quality: High-resolution, clear diagrams and text (typical for official software) Binding Type Binding: N/A (Software) Paper Type Paper: N/A (Software) ⚙️ Engine Specifications Primary Engine Engine Code: M102 (e.g., 2.3L) Configuration: Inline-4 Cylinder Displacement: 2299 cc (2.3 Liters) Bore X Stroke: 95.5 mm x 80.25 mm Compression Ratio: 9.1:1 Valve Train: SOHC (Single Overhead Camshaft), 8 valves Performance Horsepower Net: Approx. 118 hp @ 5200 rpm (for 2.3L model) Torque Net: Approx. 127 lb-ft @ 3000 rpm (for 2.3L model) Fuel System Fuel Delivery: Bosch K-Jetronic Continuous Injection (CIS) or CIS-E (Electronic) Fuel Injection Fuel Type: Unleaded gasoline (87-91 Octane recommended, check specific variant) 🔧 Transmission Standard Transmission Type: 4-Speed Manual Optional Transmission Type: 4-Speed Automatic (Optional, typically with torque converter lock-up) Features Automatic Features: Hydraulically controlled, with selection modes (e.g., Economy/Sport). Fluid Specifications Automatic Transmission Fluid: Dexron III (or equivalent MB Spec 236.1) Fluid Capacities Automatic Transmission Capacity: Approx. 7.0 - 8.5 Liters (depending on torque converter) 📐 Dimensions Exterior Length: Approx. 4420 mm (174 in) Width: Approx. 1690 mm (66.5 in) Height: Approx. 1390 mm (54.7 in) Wheelbase: Approx. 2665 mm (104.9 in) Weights Curb Weight: Approx. 1280 kg (2822 lbs) for 2.3L manual 🛡️ Safety Features Ratings Crash Test Era: Excellent for its time; W201 chassis was known for its structural integrity and safety focus. Active Features ABS: Optional Anti-lock Braking System (ABS) available on some models. Passive Features Airbag: Driver's side airbag (optional on some early models, standard on later ones including 1990 depending on market). Seatbelts: Pre-tensioning front seatbelts, inertia reel seatbelts. Rollover Protection: Reinforced A-pillars and roof structure. 💡 Technology Features Infotainment Audio System: Factory-installed AM/FM cassette stereo with options for upgraded units. Driver Assistance ABS: Optional ABS for enhanced braking control. Connectivity Features: Limited by era; focus on core vehicle functions and comfort features rather than advanced connectivity. 🔧 Maintenance Service Intervals Oil Change Interval: Every 7,500 - 10,000 miles (12,000 - 15,000 km) or 12 months. Major Service: At 30,000 miles/km: inspect and replace various fluids, filters, spark plugs, inspect belts and hoses. Fluid Specifications Engine Oil: SAE 10W-30 or 10W-40 (API SG or higher), meeting MB-Approval 229.1 (check manual for exact specs based on climate). Coolant: Mercedes-Benz Coolant/Antifreeze (MB-Specification 325.0, typically a 50/50 mix with distilled water). Brake Fluid: DOT 3 or DOT 4 brake fluid. Fluid Capacities Engine Oil Capacity: Approx. 4.5 - 5.0 Liters (with filter) Coolant Capacity: Approx. 7.5 Liters Known Issues Wiring Harness: Biodegradable insulation on engine wiring harnesses can degrade, causing electrical faults. The manual details inspection and replacement procedures. Fuel System: K-Jetronic system can develop leaks (fuel distributors, accumulators, injectors). The manual provides diagnostic steps. Suspension: Front lower ball joints and rear subframe mounts can wear. Manual covers inspection and replacement. Cooling System: Coolant leaks from hoses, radiator, or expansion tank are common due to age. Manual guides for replacement. 📚 Vehicle History Brand Heritage Heritage Focus: Mercedes-Benz reputation for build quality, durability, and engineering excellence. Model Evolution Introduction: The 190 (W201) was introduced in 1982 as Mercedes-Benz's first compact executive car, aiming to capture a new, younger demographic. Facelift: The 190E received a significant...