🏷️ Basic Information

Make:

Mercedes-Benz

Model:

300E

Year:

1993

Engine:

2.8L Inline-6 (M104.941)

Chassis Code:

W124

Engine Code:

M104.941

👋 Introduction

Segment:

Executive Sedan

Era:

Early to Mid-1990s Luxury

Competitors:

BMW 5 Series (E34), Audi 100/A6 (C4), Lexus GS, Acura Legend

Build Quality:

Renowned Mercedes-Benz build quality, durability, and longevity.

Design:

Iconic 'W124' chassis, understated elegance, aerodynamic efficiency.

Ride Comfort:

Exceptional ride comfort and refinement characteristic of Mercedes-Benz sedans.

Safety:

Advanced safety features for its time, including optional ABS and driver-side airbag.

📋 Manual Details

Coverage:

All Models/Engines/Trim/Transmissions for 1993 Mercedes-Benz 300E 2.8

Page Count:

Estimated 1500-2000+ pages (typical for comprehensive workshop manuals)

Manual Type:

Workshop Repair Service Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Engine Mechanical:

Engine overhaul, cylinder head, block, pistons, crankshaft, camshafts, timing, lubrication, cooling system.

Engine Management:

Fuel injection (KE-Jetronic/MEC-E), ignition system, engine control unit (ECU) diagnostics, sensors, actuators.

Transmission Manual:

Manual transmission (if applicable for 2.8L, though typically automatic), clutch, gearbox overhaul, service procedures.

Transmission Automatic:

4-speed automatic transmission (722.4), hydraulic system, electronic control, overhaul, adjustments, fluid service.

Brakes:

Hydraulic system, ABS (Anti-lock Braking System), brake discs, pads, calipers, lines, master cylinder, servo.

Suspension Steering:

Front and rear suspension components, shock absorbers, springs, control arms, steering gear, power steering system.

Electrical System:

Battery, alternator, starter, wiring diagrams, lighting, fuses, relays, ignition switch, starting and charging.

Body Chassis:

Body structure, doors, hood, trunk, glass, interior trim, chassis components, corrosion protection.

HVAC:

Heating, ventilation, and air conditioning system, refrigerant, components, controls, diagnostic procedures.

Interior Features:

Seats, seat belts, dashboard, instruments, power windows, power locks, central locking system.

Routine Maintenance:

Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, belt inspection.

Troubleshooting:

Diagnostic charts, symptom-based troubleshooting for engine, electrical, and mechanical issues.

Repair Overhaul:

Detailed step-by-step instructions for major component repairs and rebuilds (e.g., engine, transmission, suspension).

Diagnostic Testing:

Procedures for testing various systems, including fuel pressure, ignition timing, electrical circuits, and sensor outputs.

Adjustments:

Engine idle speed, throttle linkage, parking brake, headlight aim.

Depth:

Comprehensive, covering from basic maintenance to complete engine and transmission rebuilds. Includes detailed specifications and diagnostic procedures.

📊 Manual Specifications

File Type:

PDF

Searchable Text:

Yes (typically, depending on original scan quality)

Print Readability:

High (suitable for printing and on-screen viewing)

Binding:

N/A (Digital Download)

Paper Quality:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Type:

Inline 6-Cylinder, DOHC (M104)

Displacement:

2799 cc (2.8 Liters)

Bore X Stroke:

89.9 mm x 73.5 mm

Compression Ratio:

10.0:1

Horsepower:

197 hp @ 5700 rpm (approx.)

Torque:

265 Nm (195 lb-ft) @ 4400 rpm (approx.)

Fuel Delivery:

Bosch KE-Jetronic CIS-E (Mechanical/Electronic Hybrid Fuel Injection)

Fuel Type:

Unleaded Premium (91 Octane or higher recommended)

Oil Capacity:

7.5 Liters (with filter, approx.)

Coolant Capacity:

9.5 Liters (approx.)

🔧 Transmission

Transmission Type:

4-Speed Automatic (722.4)

Transmission Type:

5-Speed Manual (less common for this engine variant)

Automatic Features:

Electronic control, lock-up torque converter for improved fuel efficiency.

Automatic Fluid Type:

MB 236.1 ATF (e.g., Mercedes-Benz Automatic Transmission Fluid)

Automatic Fluid Capacity:

Approx. 6.5 Liters (dry fill, varies with torque converter)

📐 Dimensions

Length:

4740 mm (186.6 in)

Width:

1740 mm (68.5 in)

Height:

1430 mm (56.3 in)

Wheelbase:

2800 mm (110.2 in)

Curb Weight:

1540 kg (3395 lbs) (approx., depending on equipment)

Gross Vehicle Weight Rating:

2040 kg (4497 lbs) (approx.)

Wheel Bolt Pattern:

5x112

Standard Tire Size:

205/60 R15

Standard Wheel Size:

15x6.5J

🛡️ Safety Features

Federal Motor Vehicle Safety Standards:

Compliant with FMVSS standards of the era; specific ratings may vary by testing agency.

ABS:

Standard or Optional Anti-lock Braking System (ABS)

Traction Control:

Optional Acceleration Slip Regulation (ASR) on some models

Airbags:

Driver-side airbag standard from 1993 onwards for W124.

Seatbelts:

Front and rear seat belts, pre-tensioners on front belts.

Body Structure:

Reinforced safety cell, crumple zones.

💡 Technology Features

Audio System:

Original factory radio/cassette player, often with Becker brand. Upgrade options available.

Climate Control:

Manual or Automatic Climate Control (optional, depending on trim level).

Cruise Control:

Standard electronic cruise control.

Antenna:

Power antenna for radio reception.

🔧 Maintenance

Oil Change Interval:

Every 10,000-15,000 km or 12 months, whichever comes first (refer to manual for specific service 'A'/'B' intervals).

Transmission Fluid Change:

Recommended every 50,000-75,000 km or 3-5 years.

Engine Oil Specification:

API SJ/SL or ACEA A3/B4, viscosity typically 0W-40, 5W-40, or 5W-30 (check manual for exact MB specifications).

Coolant Type:

MB 325.0/326.0 (Ethylene Glycol based, typically blue or green concentrate).

Brake Fluid Type:

DOT 3 or DOT 4

Wiring Harness:

Potential degradation of the engine wiring harness insulation (cracking/melting) over time, especially around the engine bay.

O-Ring Seals:

Leaking O-rings in the fuel distributor and vacuum lines can cause performance issues.

Head Gasket:

While generally robust, head gasket issues can occur with high mileage or overheating. M104 has specific head bolt torque sequences and procedures.

Suspension Components:

Wear of control arm bushings, ball joints, and shock absorbers is common with age and mileage.

Climate Control Vacuum Lines:

Degradation of vacuum lines controlling HVAC actuators can lead to erratic climate control functions.

📚 Vehicle History

Mercedes Benz Legacy:

Long history of engineering excellence, innovation, and luxury vehicle production.

W124 Generation:

Part of the highly regarded W124 E-Class generation (1985-1995), known for its exceptional build quality and engineering.

Engine Updates:

The M104 engine introduced in the late 80s and early 90s represented a significant advancement with its DOHC design.

Production Years:

1985-1995 (W124 chassis); 300E 2.8 model variant introduced around 1989/1990.

🏆 Awards & Recognition

W124 Reputation:

The W124 chassis is widely regarded as one of the most over-engineered and durable Mercedes-Benz models ever produced. Often praised for its longevity and robust design by automotive journalists and owners alike.