🏷️ Basic Information

Make:

Mercedes-Benz

Model:

300 TE 4MATIC

Chassis Code:

W124

Model Generation:

Second Generation (Post-1989 Facelift)

Engine Code:

M103 (likely)

👋 Introduction

Positioning:

The Mercedes-Benz 300 TE 4MATIC (W124) represented a premium segment station wagon, offering robust engineering, luxury, and the all-weather capability of its 4MATIC all-wheel-drive system. It was a competitor to other European luxury wagons of the era.

Competitors:

BMW 525i Touring, Audi 100 Quattro Avant, Volvo 240/740/940 series (though less luxury-focused).

Distinctive Features:

W124 chassis renowned for build quality and durability, 4MATIC permanent all-wheel-drive system, spacious and versatile wagon body style, luxurious interior appointments, smooth inline-six engine performance.

Value:

This manual provides factory-level repair and service information, mirroring what Mercedes-Benz dealerships utilize. Its comprehensive nature and digital accessibility offer significant value for owners seeking to maintain or repair their vehicle themselves, or to ensure correct procedures are followed by independent workshops.

📋 Manual Details

Years Covered:

1990, 1991, 1992, 1993

Models Covered:

300 TE 4MATIC (Wagon)

Estimated Page Count:

Extensive (typically 1000+ pages for full factory manuals)

Type:

Factory Service and Repair Manual

Language:

English

Format:

PDF (Digital Download)

📖 Manual Coverage

Engine:

Full engine service, diagnostics, repair, rebuild procedures for M103 engine, including fuel injection (Bosch KE-Jetronic/HFS), ignition, cooling, lubrication, and emissions.

Transmission:

4MATIC all-wheel-drive system, automatic transmission (likely 722.3 or 722.4 variants), clutch system, manual transmission (if applicable to specific export markets, though 300 TE 4MATIC was predominantly auto).

Drivetrain:

Front and rear axles, transfer case, drive shafts, CV joints, differentials (4MATIC specific).

Suspension Steering:

Front and rear suspension, shock absorbers, springs, ball joints, control arms, self-leveling suspension (SLS) system, hydraulic systems, power steering, steering gear, steering column.

Brakes:

Hydraulic brake system, ABS (Anti-lock Braking System), brake fluid, lines, hoses, calipers, pads, rotors, parking brake system, brake testing and adjustment.

Electrical:

Complete electrical system schematics, battery, starting system, charging system (alternator), lighting, wipers, horn, instruments, warning lamps, fuse box, relays, wiring diagrams.

Body Chassis:

Body structure, corrosion inspection, water leakage points, door hinges, locks, sunroof operation, hood lubrication, windshield wiper/washer system, exterior lamps, paint damage inspection.

HVAC:

Heating and ventilation system, air conditioning (refrigerant charge, dust filter replacement, active charcoal filter, recirculating air filter), cabin filters.

Maintenance:

Engine oil and filter change, valve clearance adjustment, idle speed adjustment, fuel filter replacement, air filter replacement, V-belt inspection/replacement, fluid level checks and top-offs (coolant, power steering, brake, transmission, transfer case, axle). Lubrication points.

Diagnostics Troubleshooting:

Component condition inspection, line and hose inspection, injection timing checks, spark plug analysis, fuel system condition checks, exhaust system leak detection, electrical system troubleshooting (using wiring diagrams).

Repair Replacement:

Engine component replacement (e.g., oxygen sensor, spark plugs), fuel system components, cooling system components (radiator, hoses), clutch disk replacement, transmission fluid/filter service, transfer case service, axle fluid service, brake pad/rotor replacement, brake fluid flush, self-leveling suspension component service.

Adjustments:

Valve clearance, idle speed, injection timing, parking brake, limiting stops for rear axle mounts.

Depth:

Comprehensive Factory Level. Covers routine maintenance, detailed diagnostic procedures, component-level repair, and system overhauls. Suitable for professional technicians and advanced DIY mechanics.

📊 Manual Specifications

Format Details:

PDF. High-quality, real files, not scanned copies. Fully bookmarked and searchable for efficient information retrieval.

Printability:

All pages are printable, allowing users to create hard copies for use in workshops or on the go.

Binding:

Not Applicable (Digital Download)

Paper Type:

Not Applicable (Digital Download)

⚙️ Engine Specifications

Engine Type:

Inline 6-cylinder, SOHC (Single Overhead Camshaft)

Displacement:

2,960 cc (3.0 Liters)

Bore X Stroke:

88.5 mm x 80.25 mm

Compression Ratio:

9.2:1 (typical)

Horsepower:

188 hp @ 5,700 rpm (approx.)

Torque:

195 lb-ft @ 4,400 rpm (approx.)

Fuel Delivery:

Bosch KE-Jetronic CIS-E (Continuous Injection System - Electronic) Fuel Injection

Fuel Type:

Unleaded Premium Gasoline (91+ octane recommended)

Ignition Type:

Electronic Ignition (e.g., Bremi or Bosch distributor system)

Oil Capacity:

Approximately 6.7 Liters (7.1 US Quarts) with filter change.

Coolant Capacity:

Approximately 9.5 Liters (10 US Quarts)

Valve Adjustment Interval:

Typically every 30,000 - 40,000 miles or as specified in the manual.

Common Concerns:

Head gasket leaks, OVP relay failures, injector seal leaks, vacuum hose degradation, distributor cap and rotor wear, valve stem seal wear leading to oil consumption.

🔧 Transmission

Type:

4-Speed Automatic Transmission

Model Designation:

Likely 722.3 or 722.4 series

Type:

Not applicable for this model variant (4MATIC)

AWD System:

4MATIC Permanent All-Wheel Drive system with a 35% front / 65% rear torque split, utilizing planetary gears and multi-disc clutches for traction control. Includes inter-axle and rear-axle differential locks, often electronically controlled (EDS function). This is a significant mechanical system covered in detail.

Fluid Type:

MB Approved Automatic Transmission Fluid (e.g., MB 236.1 or 236.3, likely Dexron II or III compatible for this era, but always confirm via manual/data card).

Fluid Capacity:

Approximately 7.5 Liters (8 US Quarts) for a complete fluid and filter change.

Service Interval:

Fluid and filter change typically recommended every 30,000 - 50,000 miles, depending on driving conditions.

📐 Dimensions

Length:

4,765 mm (187.6 in)

Width:

1,740 mm (68.5 in)

Height:

1,450 mm (57.1 in) (approx., excluding roof rails)

Curb Weight:

Approximately 1,650 kg (3,638 lbs)

Cargo Volume:

Substantial wagon cargo capacity, configurable with rear seats folded.

Wheelbase:

2,800 mm (110.2 in)

🛡️ Safety Features

Crash Test Performance:

While specific NHTSA/IIHS ratings for this exact year/model are scarce, the W124 chassis was known for its robust safety structure, featuring a high degree of passive safety. Expected to perform well for its era.

ABS:

Standard Anti-lock Braking System (ABS)

Traction Control:

Limited slip differential capabilities inherent in the 4MATIC system and potentially electronic traction control features depending on specific market configuration.

Airbags:

Driver's side airbag became standard on many models in this period, passenger airbag optional or standard on later models within this range. Manual should specify.

Seatbelts:

3-point inertia-reel seatbelts for all occupants, front seatbelt height adjustment.

Body Structure:

Reinforced safety cage, energy-absorbing crumple zones, side-impact protection beams.

💡 Technology Features

Audio System:

Factory premium sound systems, often with cassette player. Radio was typically an AM/FM unit. CD changers were optional. Manual covers basic audio system maintenance and speaker replacement.

Cruise Control:

Standard cruise control (Tempomat) is common.

Level Control:

Self-Leveling Suspension (SLS) system for rear axle, maintaining ride height under load. Covered in detail for inspection and fluid level checks.

Antenna Mast:

Power antenna mast maintenance and cleaning covered.

🔧 Maintenance

Oil Change:

Typically every 7,500 - 10,000 miles or 12 months, using synthetic oil, as specified in the manual.

Major Tune Up:

Spark plugs, air filter, fuel filter replacement often recommended around 30,000 - 60,000 miles, depending on components.

Engine Oil:

API SG/SH rated, SAE 10W-40 or 15W-40 synthetic or semi-synthetic recommended for optimal performance and protection. Refer to manual for exact MB specifications.

Coolant:

Mercedes-Benz approved Antifreeze/Coolant (e.g., MB 325.0/326.0), a 50/50 mix with distilled water is standard.

Brake Fluid:

DOT 4, ISO 4925 Class 4.

Power Steering Fluid:

MB approved hydraulic fluid (e.g., Pentosin CHF 11S or similar specifications, check manual for exact MB designation).

Differential Axle Fluid:

API GL-5, SAE 80W-90 (check manual for specific MB approved GL-5 differentials for 4MATIC).

Common Problems:

W124 models are known for durable construction but can suffer from vacuum leaks due to brittle hoses, the aforementioned OVP relay issues, biodegrading wiring harnesses (less common in early 90s models but possible), and the self-leveling suspension (SLS) can develop leaks or actuator issues. Fuel distributor seals on CIS systems can also fail.

📚 Vehicle History

Mercedes Legacy:

Mercedes-Benz has a long-standing reputation for engineering excellence, durability, and luxury vehicles, particularly in the mid-to-late 20th century with the W124 generation being a highlight of robust build quality and timeless design.

W124 Lineage:

The W124 (E-Class) was produced from 1984 to 1995/1997. The 300 TE 4MATIC variant was introduced in the mid-lifecycle facelift period (post-1989), offering the 4MATIC system in the popular wagon (T-model) body style. It succeeded the M102-powered 2.6 models and was itself later replaced by the 320 TE 4MATIC with the M104 engine.

Production Years:

W124 T-model production: 1985–1996. 300 TE 4MATIC specifically: circa 1989/1990 – 1993.

Manufacturing Location:

Sindelfingen, Germany

🏆 Awards & Recognition

Historical Accolades:

The W124 chassis, in general, received numerous accolades during its production run, frequently praised by automotive journalists for its build quality, engineering, and durability. It was often cited as a benchmark for luxury sedans and wagons of its time.

Reliability Perception:

The W124 generation of Mercedes-Benz is widely regarded as one of the most reliable and best-built vehicles Mercedes-Benz has ever produced, contributing to its enduring appeal among enthusiasts.