🏷️ Basic Information Identification Make: Mercedes-Benz Model: 300TE Year: 1990 Chassis Code: W124 Codes Engine Code Variant: M103.983 Transmission Code Variant: 722.424 (4-speed Automatic) 👋 Introduction Market Position Positioning: The 1990 Mercedes-Benz 300TE (W124 chassis) represented the pinnacle of mid-size luxury estate cars, known for its build quality, durability, and advanced engineering for its era. Competitive Analysis Competitors: Competed with other premium European estate cars such as the BMW 5 Series Touring, Audi 100 Avant, and Volvo 240/740/940 series. Key Features Vehicle Highlights: Robust construction, sophisticated multi-link rear suspension, powerful inline-six engine, comfortable and refined interior, legendary Mercedes-Benz build quality. Manual Value Value Proposition: An indispensable resource for owners and technicians to maintain, diagnose, and repair the 1990 Mercedes-Benz 300TE, ensuring its longevity and optimal performance. 📋 Manual Details Coverage Areas Primary Coverage: Service and Repair Secondary Coverage: Maintenance, Troubleshooting, Diagnostics, Electrical Systems, Engine, Transmission, Suspension, Brakes, Bodywork, HVAC Page Count Estimated Page Count: 1500+ Manual Type Type: Official Factory Service Manual (Digitized) Language Language: English Format Format: Software (Digital) 📖 Manual Coverage Systems Covered Engine Mechanical: Full Engine Overhaul, Timing System, Lubrication System, Cooling System, Fuel Injection System (K-Jetronic) Engine Electrical: Ignition System, Engine Control Unit (ECU) Diagnostics, Sensor Identification and Testing Transmission: Automatic Transmission (722.4) Overhaul, Hydraulic System, Valve Body, Torque Converter, Shift Linkage Drivetrain: Rear Axle, Driveshaft, CV Joints, Limited Slip Differential (if equipped) Suspension And Steering: Front and Rear Suspension Components, Shock Absorbers, Springs, Bushings, Power Steering System, Steering Gear Brakes: Front and Rear Disc Brakes, ABS (Anti-lock Braking System) Components and Troubleshooting, Brake Lines, Master Cylinder Electrical System: Complete Wiring Diagrams, Fuse and Relay Locations, Lighting Systems, Power Windows, Central Locking, Wipers, Horn Climate Control: HVAC System Operation, Refrigerant Handling, Blower Motor, Heater Core, Air Conditioning Compressor Body And Interior: Door Mechanisms, Seat Adjustments, Sunroof Operation, Exterior Trim, Interior Trim Removal and Installation Procedures Included Maintenance: Oil Change, Filter Replacement, Spark Plug Replacement, Fluid Level Checks and Replenishment, Belt Inspection and Replacement Troubleshooting: Systematic Diagnostic Flowcharts, Common Fault Symptom Analysis, Component Testing Procedures Repair: Component Removal and Installation, Reassembly Instructions, Torque Specifications for Critical Fasteners Diagnostics: On-Board Diagnostics (OBD) Procedures (where applicable for the era), Fault Code Interpretation, Measurement Block Group Analysis Special Tools: Identification of required Mercedes-Benz specific tools and their applications Technical Depth Depth: Comprehensive from routine maintenance to complete engine and transmission rebuilds, including detailed electrical schematics and diagnostic routines. 📊 Manual Specifications File Format Format: Digital Software (Likely PDF or Proprietary Viewer) Searchability: Likely searchable text for quick information retrieval Print Quality Quality: Digital reproduction of original factory manual quality Binding Type Binding: Not Applicable (Digital) Paper Type Paper: Not Applicable (Digital) ⚙️ Engine Specifications Primary Engine Engine Type: Inline 6-Cylinder, Naturally Aspirated Displacement: 2.6 Liters (2597 cc) Bore X Stroke: 82.0 mm x 80.25 mm Compression Ratio: 9.2:1 Performance Horsepower: 160 hp @ 5800 RPM Torque: 177 lb-ft @ 4400 RPM Fuel System Fuel Delivery: Bosch KE-Jetronic CIS-E Fuel Injection Fuel Type: Unleaded Premium Gasoline (91 Octane Recommended) Lubrication Oil Capacity: 6.5 Liters (with filter) Recommended Oil Viscosity: SAE 10W-40 (or as per owner's manual based on climate) 🔧 Transmission Standard Type: 4-Speed Automatic Transmission Model Designation: 722.424 Optional Manual Transmission Availability: Not Available for 300TE (estate model typically automatic only) Features Shift Modes: Standard (Drive), 3, 2, 1; 'E'/'S' mode selector (Economy/Standard) Fluid Specifications Transmission Fluid Type: MB-Approval 236.1 Automatic Transmission Fluid (ATF) Fluid Capacity Fluid Capacity: Approximately 7.5 - 8.0 Liters (dry fill) 📐 Dimensions Exterior Length: 4740 mm (186.6 in) Width: 1740 mm (68.5 in) Height: 1440 mm (56.7 in) Wheelbase: 2800 mm (110.2 in) Front Track: 1487 mm (58.5 in) Rear Track: 1460 mm (57.5 in) Cargo Cargo Volume: Approximately 560-1600 Liters (with rear seats folded) Weights Curb Weight: Approximately 1620 kg (3571 lbs) Gross Vehicle Weight: Approximately 2160 kg (4762 lbs) Towing Capacity: Typically rated for 750 kg (1653 lbs) unbraked, 1500 kg (3307 lbs) braked. 🛡️ Safety Features Ratings Crash Test Data: While formal NHTSA/IIHS ratings for this specific year and model are scarce, the W124 chassis was renowned for its robust 'safety cage' construction and crumple zones, considered very safe for its time. Active Features ABS: Standard Anti-lock Braking System (ABS) Traction Control: Optional Acceleration Skid Control (ASR) on some later W124 models, but unlikely standard on 1990 300TE. Passive Features Airbags: Driver's side airbag typically standard or a very common option by 1990. Seatbelts: Pretensioner seatbelts for front occupants. Structural Design: Reinforced chassis and doors, energy-absorbing steering column, impact-resistant windows. 💡 Technology Features Infotainment Audio System: Original Becker Grand Prix or similar period-appropriate Mercedes-Benz radio, often with cassette player. Speakers: Typically 4 or 6 speaker system. Driver Assistance Cruise Control: Standard cruise control system. Climate Control System: Manual or optional Thermatic automatic climate control. Connectivity Connectivity Features: No modern connectivity features like...