Mercedes Benz W140 Series Complete Workshop Service Repair Manual 1992 1993 1994 1995 1996 1997 1998 1999

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Sku: 153827

Tags: 1992 1993 1994 1995 1996 1997 1998 1999 Car Cars Featured Mercedes Mercedes Benz W140 W140 Series

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Description

This workshop service repair manual covers the Mercedes-Benz W140 Series produced from 1992 to 1999. The W140 S-Class represented the pinnacle of luxury and engineering for its time, competing against flagship sedans from other premium manufacturers. It was characterized by its imposing size, robust construction, and advanced features, setting new benchmarks in driver comfort and safety. This manual encompasses all models, engines, trim levels, and transmission types within this generation, including the powerful V8 (M119) and V12 (M120) engine options. This comprehensive manual provides detailed instructions for all aspects of vehicle maintenance and repair. It covers essential procedures such as routine maintenance, engine and transmission overhauls, drivetrain and suspension work, brake system servicing, and the complex electrical system, including wiring diagrams. Additionally, it offers guidance on troubleshooting common issues, diagnostic procedures, and specific technical data, ensuring that owners and technicians can effectively maintain and repair the Mercedes-Benz W140 Series.

🏷️ Basic Information

Identification

Make:

Mercedes-Benz

Model:

S-Class

Chassis Code:

Product Name:

Mercedes Benz W140 Series Complete Workshop Service Repair Manual 1992-1999

👋 Introduction

Market Position

Positioning:

The Mercedes-Benz W140 represented the pinnacle of luxury, engineering, and technology for its era, setting new benchmarks for large sedans.

Competitive Analysis

Competitors:

Competed against flagship luxury sedans from BMW (E38 7 Series), Lexus (LS 400), Jaguar (XJ), and Audi (V8/A8).

Key Features

Design Philosophy:

Characterized by its imposing size, robust construction, advanced features, and focus on driver comfort and safety.

Manual Value Proposition:

Empowers owners and independent repair shops to perform a wide range of maintenance and repair tasks, saving significant costs compared to dealership servicing.

📋 Manual Details

Coverage Areas

Year Coverage:

1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999

Model Variants Covered:

All models, engines, trim levels, and transmission types

Page Count

Estimated Page Count:

Comprehensive (likely several thousand pages, not specified but implied by 'complete workshop')

Manual Type

Type:

Workshop Service Repair Manual

Language

Language:

English

Format

Format:

Downloadable Digital File (PDF)

📖 Manual Coverage

Systems Covered

Powertrain:

Engine mechanical, fuel injection, cooling, exhaust, lubrication, ignition, engine management systems (DME/ME, etc.)

Transmission:

Automatic transmission (e.g., 722.3, 722.4, 722.5, 722.6 depending on year/engine) repair, overhaul, diagnostics, fluid specifications

Drivetrain:

Driveshafts, differentials, axles, drive shafts

Suspension:

Front and rear suspension, struts, shocks, control arms, bushings, springs, self-leveling suspension (SLS) if applicable

Steering:

Power steering system, steering column, steering gearbox/rack, hydraulic components

Brakes:

Hydraulic system, ABS (Anti-lock Braking System), ASR (Acceleration Slip Regulation), brake pads, rotors, calipers, lines, parking brake

Electrical System:

Wiring diagrams, fuses, relays, battery, alternator, starter, lighting systems, power accessories (windows, locks, seats, mirrors), control modules (ECU, ABS, SRS, etc.)

HVAC:

Heating, Ventilation, and Air Conditioning system components, operation, diagnosis, refrigerant handling

Body And Chassis:

Body panel removal/installation, door mechanisms, hood, trunk, glass, interior trim, chassis components

Safety Systems:

SRS (Supplemental Restraint System) - airbags, seatbelt pre-tensioners, diagnostic procedures

Diagnostics:

Troubleshooting guides, diagnostic trouble codes (DTCs), specific test procedures for various systems

Procedures Included

Maintenance:

Routine maintenance (oil changes, filter replacements, fluid checks), scheduled service intervals, lubrication points

Repair:

Detailed step-by-step repair instructions for all major mechanical and electrical components

Overhaul:

Engine rebuild, transmission overhaul, and component reconditioning procedures

Troubleshooting:

Systematic diagnostic procedures for identifying and resolving common and complex faults

Diagnostics Tools:

Information on specific diagnostic tools and equipment required (e.g., scan tools, pressure gauges)

Specifications:

Torque specifications, clearances, timing settings, fluid capacities, electrical resistance values

Technical Depth

Depth:

Comprehensive: Covers everything from basic fluid checks and filter changes to complete engine and transmission rebuilds, complex electrical diagnostics, and bodywork repairs.

📊 Manual Specifications

File Format

Format:

Searchability:

Searchable text content

Print Quality

Printability:

Printable pages or sections

Binding Type

Binding:

Not applicable (digital download)

Paper Type

Paper Type:

Not applicable (digital download)

⚙️ Engine Specifications

Primary Engine

Engine Family:

M119 (V8) and M120 (V12)

Engine Options V8:

4.2L (4196 cc) M119.970, 5.0L (4973 cc) M119.970/M119.980, 5.5L (5473 cc) M119.970 (later models)

Engine Options V12:

6.0L (5987 cc) M120.980

Performance

V8 Power Range:

Approx. 275-322 hp (varies by displacement and market)

V8 Torque Range:

Approx. 390-470 Nm (varies by displacement)

V12 Power:

Approx. 408 hp

V12 Torque:

Approx. 580 Nm

Fuel System

Injection System:

Bosch LH-Jetronic or ME-Motronic electronic fuel injection

Fuel Type:

Premium Unleaded Gasoline (RON 95 or higher)

Engine Features

Valve Train:

DOHC (Double Overhead Camshafts), 4 valves per cylinder

🔧 Transmission

Standard

Standard Transmission:

4-speed automatic (e.g., 722.3, 722.4 for earlier V8 models)

Optional

Optional Transmission:

5-speed automatic (e.g., 722.5, 722.6 introduced later in production for V8 and V12 models)

Features

Transmission Control:

Electronic transmission control (ETC) on later models (722.6)

Fluid Specifications

Fluid Type:

MB Approved Automatic Transmission Fluid (e.g., Dexron II/III or specialist MB fluids like ATE Typ 200 for certain generations, check specific model year)

📐 Dimensions

Exterior

Wheelbase:

Standard: 3,137 mm (123.5 in); Long Wheelbase (SEL): 3,267 mm (128.6 in)

Length:

Standard: 5,163 mm (203.3 in); Long Wheelbase: 5,288 mm (208.2 in)

Width:

1,886 mm (74.3 in)

Height:

1,487 mm (58.5 in)

Weights

Curb Weight:

Approx. 1,900 - 2,300 kg (varies significantly by engine and configuration)

🛡️ Safety Features

Ratings

Historical Ratings:

While formal crash test ratings were less standardized in the early to mid-90s compared to today, the W140 was engineered with a strong focus on occupant protection, featuring a very robust chassis and advanced passive safety features for its time.

Active Features

Standard Anti-lock Braking System (ABS) on all models

Optional or standard ASR (Acceleration Slip Regulation) on later models

Esp Availability:

Not typically available on W140; ESC (Electronic Stability Control) became prevalent in later generations.

Passive Features

Airbags:

Driver and front passenger airbags standard; side airbags became optional on later models.

Body Construction:

High-strength steel chassis with crumple zones for enhanced impact absorption.

Seatbelts:

Pre-tensioning seatbelts

💡 Technology Features

Infotainment

Infotainment System:

Early models featured basic analog/digital radio, cassette player, and optional CD changer. Later models saw the introduction of the COMAND (Cockpit Management and Navigation) system, though often as an option.

Navigation:

Optional GPS navigation systems, often with separate displays or integrated into early COMAND units.

Driver Assistance

Parking Assistance:

Optional parking sensors (Parktronic) became available on later models.

Cruise Control:

Standard cruise control.

Connectivity

Phone Integration:

Optional factory-installed car phone systems, often with rudimentary hands-free integration.

Comfort Features

Climate Control:

Automatic climate control (THERMATIC or THERMOTRONIC) with dual-zone capability.

Seats:

Power-adjustable front seats with memory, heated seats, optional orthopedic/massaging seats.

Windows Mirrors:

Power windows, power-adjustable and heated mirrors, auto-dimming rearview mirror.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Typically every 10,000-15,000 km (6,000-9,000 miles) or annually, depending on driving conditions and specific engine variant.

Major Service Intervals:

Major services (e.g., spark plug replacement, transmission service, coolant flush) at intervals of 50,000-100,000 km (30,000-60,000 miles).

Fluid Specifications

Engine Oil Specification:

MB 229.1 or MB 229.5 (e.g., 5W-40, 10W-40, 0W-40 synthetic, depending on temperature and specific engine requirements).

Coolant Specification:

MB Approved Antifreeze/Coolant (e.g., G05 or similar silicate-free formula), typically a 50/50 mix with distilled water.

Brake Fluid Specification:

DOT 4 specification brake fluid.

Known Issues

Common Issues:

Can include biodegradable wiring insulation degradation, SRS system faults (seat occupancy sensors, clock springs), vacuum leak issues, SLS hydraulic leaks, evaporator core leaks (HVAC), and sticky door locks (vacuum operated).

Maintenance Cost Considerations:

Due to its complexity and luxury positioning, maintenance and repair costs can be higher than average. This manual is crucial for managing these costs.

📚 Vehicle History

Brand Heritage

Heritage:

Part of Mercedes-Benz's long-standing tradition of producing prestigious and technologically advanced flagship sedans.

Model Evolution

Introduction Year:

1991 (for the 1992 model year)

Facelift:

Minor facelift around 1995/1996, including revised bumpers, door handles, and potential powertrain updates.

Production

Production Period:

1991-1998 (sold as 1992-1999 model years)

Successor:

W220 S-Class

🏆 Awards & Recognition

Recognitions

Industry Recognition:

While specific 'awards' for the W140 are less common in the modern sense, it was widely recognized for its engineering prowess, ride comfort, and build quality, solidifying its status as a benchmark in the luxury sedan market.