Segment:
Compact Executive Sedan
Target Audience:
Owners seeking to perform DIY maintenance and repairs, independent repair shops, Mercedes-Benz enthusiasts.
Competitors:
BMW 3 Series (E36), Audi A4 (B5), Lexus ES300, Acura TL.
Differentiation:
Renowned Mercedes-Benz build quality, sophisticated engineering, comfort, and performance for its class.
Coverage Scope:
Comprehensive service, repair, diagnostics, and maintenance for the 1998 Mercedes-Benz C280.
Type:
Service and Repair Manual Software
Original Source:
Likely derived from official Mercedes-Benz factory service information.
Format:
Software (likely PDF or proprietary application)
Powertrain:
Engine mechanical (including M104 inline-6), fuel system, ignition system, exhaust system, cooling system.
Drivetrain:
Transmission (5-speed automatic 5G-TRONIC 722.6), drivetrain components (driveshafts, differentials).
Chassis:
Suspension (front and rear), steering system, braking system (including ABS).
Electrical:
Complete electrical system, wiring diagrams, battery, charging system, starting system, lighting, instrumentation, climate control, power accessories, diagnostic connectors (OBD-II).
Body:
Body construction, interior and exterior trim, doors, windows, seats, HVAC system.
Safety Systems:
ABS, ASR (if equipped), SRS (Airbag) system diagnosis.
Maintenance:
Routine scheduled maintenance, oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt inspection and replacement.
Troubleshooting:
Diagnostic procedures for common and complex issues, fault code interpretation, symptom-based troubleshooting guides.
Repair:
Step-by-step repair instructions for engine components, transmission, suspension, steering, brakes, electrical systems, and body components.
Diagnostics:
Detailed diagnostic flowcharts, testing procedures for sensors and actuators, specific diagnostic tools and techniques.
Body Repair:
Body panel alignment, door hardware repair, window regulator replacement, exterior trim installation/removal.
HVAC Repair:
Climate control system diagnosis and repair, heater core replacement, A/C compressor and system service.
Wheel Tire Spec:
Wheel specifications (bolt pattern: 5x112, center bore: 66.5mm), tire size recommendations (e.g., 205/60R15, 205/55R16 depending on trim/options).
Torque Specifications:
Detailed torque specifications for critical fasteners across all systems (engine, chassis, wheels).
Depth:
Expert-level, covering everything from basic fluid changes to complete engine and transmission rebuilds, electrical system diagnostics, and component-level repairs.
Wiring Diagrams:
Comprehensive, color-coded wiring diagrams for all electrical systems.
Special Tools:
Identification and usage of specialized Mercedes-Benz tools required for certain procedures.
Engine Type:
Inline 6-cylinder, DOHC, 24 valves
Displacement:
2.8 Liters (2799 cc)
Horsepower:
201 hp @ 5700 rpm
Torque:
188 lb-ft (255 Nm) @ 4250 rpm
0 60 Mph:
Approximately 7.5 - 8.5 seconds (depending on driver and conditions).
Fuel Delivery:
Electronic Fuel Injection (Bosch Motronic)
Recommended Fuel:
Premium Unleaded Gasoline (91 octane or higher)
ECM:
Bosch Motronic M3.8.1
Airflow Sensor:
Hot-film mass airflow sensor (MAF).
Throttle Body:
Electronic throttle control (ETC) not present in this model; cable-actuated.
NHTSA Driver Frontal:
Not explicitly rated for 1998 model year in all markets, but general safety was high for the era.
IIHS Top Safety Pick:
Not explicitly designated.
ABS:
Standard Anti-lock Braking System (ABS).
Traction Control:
Optional (ASR - Acceleration Skid Control).
Airbags:
Driver and front passenger airbags.
Seat Belts:
Front and rear seat belts, pretensioners for front seats.
Oil Change Interval:
Typically every 7,500 to 10,000 miles or 12 months (refer to manual for specific conditions and service indicator resets).
Major Service Interval:
Refer to the 'Service A', 'Service B', etc., indicators in the manual; major services typically occur every 30,000 - 50,000 miles and include spark plug replacement, coolant flush, transmission fluid change, etc.
Engine Oil:
Mobil 1 Synthetic 0W-40 (Mercedes-Benz specification 229.5).
Coolant:
MB 325.0 (Antifreeze/Coolant, Phosphate-free).
Power Steering Fluid:
Pentosin CHF 11 S or equivalent (MB specification 343.0).
Common Wear Items:
Mass airflow sensor (MAF), ignition coils, blower motor resistor, vacuum leaks, serpentine belt wear, differential seals, oil cooler seals.
Electrical Problems:
Window regulators, headlight switch, ABS sensor failures, crank position sensor.
Engine Specific:
Head gasket leaks (rare on M104), timing chain tensioner (though less prone than some other MB engines).
