Positioning:
The definitive resource for W116 owners and technicians seeking authentic factory repair information.
Differentiation:
Vehicle-specific, factory-issued content unlike generic aftermarket guides. Offers comprehensive, step-by-step instructions and schematics. Digital format allows for selective printing, avoiding wear and tear of physical manuals.
Accuracy:
Exact same manual used by dealership technicians.
Completeness:
Covers all models and all repairs A-Z.
Usability:
One easy-to-use manual, printable pages for workshop convenience.
Value Proposition:
Empowers DIY repairs, saving significant costs on dealership labor.
Covered Models:
All W116 models (including 280 S, 280 SE, 300 SD, 350 SE, 350 SEL, 450 SE, 450 SEL, 450 SEL 6.9)
Repair Scope:
A-Z (All Repairs)
Estimated Page Count:
Thousands (comprehensive factory documentation)
Type:
Factory Repair Service Manual
Purpose:
Maintenance, Service, Diagnosis, and Repair
Language:
English (Assumed based on typical market)
Digital Format:
Printable Files (likely PDF or similar)
Compatibility:
Windows Vista (32/64-bit), XP, ME, 98, NT, 2000, macOS
Powertrain:
Engine Mechanical, Fuel System (Injection/Carburetion), Ignition System, Exhaust System, Cooling System
Drivetrain:
Transmission (Automatic and Manual, where applicable), Drive Axles, Differential
Chassis:
Suspension (Front & Rear), Steering System, Brakes (Hydraulic, ABS where applicable), Wheels & Tires
Electrical:
Wiring Schematics, Lighting System, Charging System, Starting System, Instrumentation, HVAC Electrical Components, Power Accessories
Body:
Body Exterior, Interior Trim, Doors, Windows, Seats, HVAC System (Mechanical & Controls)
Maintenance:
Scheduled Maintenance, Fluid Changes, Filter Replacements, Lubrication
Diagnostics:
Troubleshooting Guides, Symptom-Based Diagnostics, Component Testing
Repair:
Component Removal & Installation, Overhaul Procedures, Reassembly Steps
Installation:
Accessory Installation, Component Replacement Guidelines
Depth:
Complete Factory-Level Detail
Detail Level:
Step-by-step instructions, detailed diagrams, exploded views, torque specifications, diagnostic flowcharts
File Quality:
High Resolution, Printable
Searchability:
Likely Searchable Text (depending on source digitization)
Printability:
All pages are printable
Image Enhancement:
Images can be blown up and printed enlarged
Binding:
Digital (no physical binding)
Paper Suitability:
Suitable for printing on standard paper
Engine Options:
M110 (2.8L Inline-6), M115 (2.4L Inline-4 - less common in many markets), M116 (3.5L V8), M117 (4.5L V8), OM617 (3.0L Turbodiesel Inline-5)
Horsepower Range:
Approx. 115 hp (300 SD) to 280 hp (450 SEL 6.9)
Torque Range:
Approx. 145 lb-ft (300 SD) to 354 lb-ft (450 SEL 6.9)
Fuel Delivery:
Carburetor (e.g., Solex, Zenith) for 280S/SE variants; Bosch D-Jetronic or K-Jetronic Fuel Injection for V8 and later 6-cylinder models; Diesel Injection for OM617
Inline 6 Gasoline:
M110.98X, M110.98X
V8 Gasoline:
M116.98X (3.5L), M117.98X (4.5L), M100.98X (6.9L)
Inline 5 Diesel:
OM617.950 (Naturally Aspirated), OM617.951 (Turbocharged)
Transmission Types:
3-speed Automatic (e.g., 3HP20, 4HP22 on later models), 4-speed Manual (less common in many markets)
Optional Transmission:
4-speed Automatic (e.g., 4HP22)
Automatic Features:
Hydraulic torque converter, planetary gearsets, electronic/vacuum modulator control.
Wheelbase:
Approx. 2850 mm (112.2 in) for short-wheelbase, 3035 mm (119.5 in) for long-wheelbase (SEL models)
Curb Weight Range:
Approx. 1700 kg to 1950 kg (3750 lbs to 4300 lbs) depending on engine and equipment
Gross Vehicle Weight:
Varies by model, typically around 2200-2400 kg
Safety Focus:
Designed with advanced safety features for its era, including a strong safety cell and crumple zones.
Passive Safety:
Reinforced passenger compartment, energy-absorbing steering column, laminated safety glass windshield.
Active Safety Features:
Four-wheel disc brakes, power-assisted steering, optional Anti-lock Braking System (ABS) on later models.
Infotainment Features:
Analog radio with mechanical tuning, optional cassette player, speaker system.
Driver Assistance Features:
Power steering, optional cruise control, optional ABS (Anti-lock Braking System).
Connectivity Features:
Limited by era; primarily internal diagnostics via test ports and indicator lights.
Oil Change Interval:
Typically every 5,000-7,500 miles or 6-12 months (refer to manual for specific engine and oil type)
Major Service Interval:
Recommended at 30,000 miles for tune-ups, fluid flushes, and component checks.
Engine Oil:
API SG/SH rated, SAE 10W-40 or 20W-50 recommended (refer to manual for specific viscosity based on ambient temperature)
Transmission Fluid:
Automatic Transmission Fluid (ATF) Dextron II or equivalent (for automatic transmissions)
Coolant:
50/50 mix of ethylene glycol antifreeze and distilled water
Brake Fluid:
DOT 3 or DOT 4 (ensure compatibility with seals)
Common Issues:
Vacuum line degradation, fuel injection system problems (K-Jetronic), rust in common Mercedes-Benz areas (wheel arches, door bottoms), wear in suspension components, climate control system faults, headlight leveling system issues.
Diesel Specific Issues:
Glow plug system faults, injection pump seal leaks, turbocharger wear (on turbocharged models).
Brand Philosophy:
Mercedes-Benz is renowned for engineering excellence, luxury, durability, and pioneering automotive safety and technology.
Predecessor:
W108/W109 S-Class
Production Period:
1972-1980
Key Markets:
North America, Europe, Asia
Manufacturing Locations:
Sindelfingen, West Germany
