This manual covers the 450 SE, chassis code W116, produced between 1973 and 1976. As the first generation of the S-Class, this model set new standards for automotive safety, comfort, and technology, embodying a legacy of engineering excellence. The 450 SE is characterized by its robust V8 SOHC engine, Bosch K-Jetronic fuel injection, and available automatic transmissions, all contributing to its reputation for luxury and durability. It features four-wheel disc brakes, power steering, and a focus on structural integrity and safety, reflecting a commitment to pioneering advancements in the automotive industry.
This comprehensive workshop repair service manual provides detailed information for the complete service, repair, maintenance, and troubleshooting of all W116 450 SE models, engines, and transmission types. It covers essential systems including the engine, transmission, brakes, electrical, suspension, steering, cooling, fuel, emission, HVAC, and body/interior. With hundreds of pages of original manufacturer content, including detailed diagrams and step-by-step procedures, this manual is an indispensable resource for 450 SE owners, independent repair shops, and automotive enthusiasts. It offers professional technician-level insights, enabling efficient and accurate maintenance and repair, thereby ensuring the longevity and optimal performance of the vehicle.
Model Years Covered:
1973-1976
Target Audience:
Mercedes-Benz W116 450 SE owners, independent repair shops, automotive enthusiasts
Value Proposition:
Provides professional-level repair and maintenance information equivalent to dealership manuals, enabling significant cost savings on repairs.
Content Quality:
Original manufacturer content, hundreds of pages of detailed diagrams and information, complete and intact.
Usability:
Easy to follow directions, numbered instructions, detailed illustrations, searchable content (inherent in PDF).
Primary Coverage:
Complete Service, Repair, Maintenance, and Troubleshooting
Model Variants Covered:
All Models, Engines, Trim Levels, and Transmission Types within W116 450 SE
Estimated Page Count:
Hundreds of pages (specific count not provided, but described as 'complete' and 'comprehensive')
Type:
Workshop Repair Service Manual
Engine:
Engine Service/Repair, Engine Control System
Transmission:
Transmission Service/Repair, Differential/Drive, Axle
Electrical:
Electrical System, Wiring Diagram
Suspension Steering:
Suspension, Steering
Cooling Fuel:
Cooling System, Fuel Injection/Fuel System
Emission HVAC:
Emission System, Heater/Air Conditioner
Body Interior:
Chassis/Body, Interior, Restraint System
Maintenance:
General Maintenance, Periodic Lubrication
Repair:
Detailed step-by-step repair procedures, Disassembly, Assembly, Cleaning, Reinstalling procedures
Troubleshooting:
Troubleshooting, Diagnostic procedures
Depth:
Comprehensive, Professional Technician Level, including detailed diagrams and specific repair information
Printability:
Full Printable
Zoom Functionality:
Zoom IN/OUT enabled
Delivery Method:
Instant Download
Software Requirements:
Adobe PDF Reader, WinZip
Operating Systems:
All Versions of Windows & Mac
Binding:
N/A (Digital PDF)
Displacement:
4.5 Liters (4520 cc)
Fuel System:
Bosch K-Jetronic Fuel Injection
Horsepower:
Approximately 190-220 hp (depending on specific market and emissions regulations)
Torque:
Approximately 238-260 lb-ft (depending on specific market and emissions regulations)
Spark Plugs:
Specific part numbers available within manual (e.g., Bosch W8 AC or equivalent)
Engine Oil Type:
Refer to manual for specific API service classification and viscosity (e.g., SAE 10W-40 or 20W-50 depending on climate)
Engine Oil Capacity:
Approximately 8.0 Liters (8.5 US quarts) with filter change
Transmission Type:
3-speed or 4-speed Automatic Transmission (e.g., Mercedes-Benz 3HP20 or 4HP22)
Transmission Type:
Manual transmission availability may vary by market, typically less common for 450 SE
Transmission Fluid Type:
Refer to manual for specific Mercedes-Benz specification (e.g., Dexron II or equivalent)
Transmission Fluid Capacity:
Approximately 10-12 Liters (10.5-12.7 US quarts) for complete refill
Wheelbase:
2935 mm (115.6 inches)
Length:
4995 mm (196.7 inches)
Width:
1875 mm (73.8 inches)
Height:
1440 mm (56.7 inches)
Curb Weight:
Approximately 1700-1800 kg (3748-3968 lbs)
Crash Safety:
Designed to stringent Mercedes-Benz safety standards of the era, with a focus on crumple zones and structural integrity.
Braking System:
Four-wheel disc brakes, often with power assistance and ABS becoming available later in the W116 run.
Restraint System:
Seat belts (front and rear), potentially optional airbags later in the production run (though rare for early models).
Audio System:
Typically an analog AM/FM radio with cassette player, potentially aftermarket upgrades.
ABS:
Anti-lock Braking System was an optional feature that became more prevalent towards the end of the W116's production life.
Climate Control:
Power windows, power locks, power steering, power seats, automatic climate control (optional or standard depending on trim).
Oil Change:
Typically every 7,500-10,000 miles or 12-18 months, refer to manual for exact schedule.
Transmission Fluid Service:
Every 30,000-50,000 miles or as specified in the manual.
Tune Up Items:
Spark plugs, ignition wires, air filter, fuel filter replacement as per manual schedule.
Coolant Type:
Ethylene glycol-based antifreeze mixed with distilled water (e.g., Mercedes-Benz specification 325.0)
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid
Common Failures:
Fuel system (injection, pumps, lines), ignition system components, vacuum leaks, rust/corrosion (especially in certain climates), aging rubber and plastic components.
Mercedes Benz Legacy:
Continuation of Mercedes-Benz's reputation for engineering excellence, luxury, and durability.
W116 Significance:
First generation of the S-Class sedan, setting new standards for automotive safety, comfort, and technology in its era.
Production Period:
1972-1980 (W116 generation), with 450 SE models within 1973-1976 covered by this manual.
Historical Significance:
The W116 platform is widely recognized as a pioneering vehicle in automotive safety and luxury, influencing future S-Class generations and the broader automotive industry.
