🏷️ Basic Information

Make:

Mercedes-Benz

Model:

300TE

Year:

1992

Chassis Code:

W124

Engine Code:

M103.982

👋 Introduction

Positioning:

The 1992 Mercedes-Benz 300TE represents the peak of the W124 E-Class wagon's engineering and luxury, offering a robust and sophisticated driving experience. This manual caters to owners and independent workshops seeking authentic, factory-level repair and maintenance information.

Comparison:

Competes with other premium European wagons of the era (e.g., BMW 5 Series Touring, Audi 100 Avant) but stands out for its build quality, ride comfort, and advanced engineering for its time. This manual provides the specific expertise needed for these complex vehicles.

Software Advantage:

Offers instant accessibility, searchability, and the ability to zoom into detailed diagrams and illustrations, surpassing traditional printed manuals for ease of use.

Licensing:

Officially licensed, assuring accuracy and completeness derived directly from Mercedes-Benz factory documentation.

📋 Manual Details

Primary Coverage:

Service, Repair, Maintenance, Diagnostics, Troubleshooting

Secondary Coverage:

Specifications, Wiring Diagrams, Technical Bulletins

Estimated Pages:

Over 1000 (typical for official comprehensive service manuals)

Type:

Official Factory Service Manual (Software)

Language:

English

Format:

Software (likely PDF or proprietary electronic format)

📖 Manual Coverage

Engine Mechanical:

Engine assembly, cylinder head, pistons, crankshaft, camshaft, timing, lubrication system, cooling system

Engine Management:

Fuel injection (KE-Jetronic), ignition system, engine control unit (ECU), emissions control

Transmission:

4-speed Automatic Transmission (4G-TRONIC), removal, installation, internal components, hydraulic control

Drivetrain:

Driveshaft, differential, rear axle, hub bearings

Suspension:

Front independent suspension (MacPherson struts), rear independent multi-link suspension, springs, shock absorbers, control arms, bushings

Brakes:

Front and rear disc brakes, ABS (Anti-lock Braking System), brake system components, hydraulic circuits, bleeding procedures

Steering:

Power assisted steering, steering gear, steering column, linkages

Electrical System:

Battery, alternator, starter motor, lighting system, fuse box, relays, wiring diagrams

Body And Interior:

Body panels, doors, hood, tailgate, interior trim, seats, climate control system (HVAC), power accessories (windows, locks, sunroof)

Diagnostics:

Troubleshooting guides, symptom-based diagnostics, fault code interpretation (if applicable for the era)

Routine Maintenance:

Oil changes, filter replacements (oil, air, fuel), spark plug replacement, coolant flush, brake fluid service

Engine Repair:

Head gasket replacement, piston ring replacement, valve stem seal replacement, timing chain/belt service, fuel injector testing/replacement

Transmission Repair:

Torque converter replacement, valve body service, seal replacement, clutch pack inspection

Brake Service:

Brake pad/rotor replacement, caliper overhaul, ABS sensor testing, brake line replacement

Suspension And Steering Repair:

Shock absorber/strut replacement, ball joint replacement, tie rod end replacement, power steering pump replacement

Electrical Diagnostics And Repair:

Wiring harness repair, component testing (alternator, starter), troubleshooting electrical faults using wiring diagrams

Bodywork And Trim Removal:

Panel alignment, trim piece removal for access, door mechanism repair

Climate Control Service:

Refrigerant handling, component replacement (compressor, evaporator), blower motor service

Depth:

Comprehensive: Covers everything from routine maintenance to full engine and transmission rebuilds, including in-depth diagnostics and troubleshooting.

Diagnostic Focus:

Detailed diagnostic procedures for mechanical and electrical systems, including troubleshooting charts and component testing specifications.

📊 Manual Specifications

Format Details:

Software likely designed for PC, with potential for searchability, hyperlinking, and clear diagram rendering. Expect PDF-like capabilities.

Print Quality Potential:

High-quality digital reproduction of original factory documentation, ensuring clarity of text, diagrams, and images when printed.

Binding Type:

N/A (Software format)

Paper Type:

N/A (Software format)

⚙️ Engine Specifications

Engine Type:

Inline 6-cylinder, SOHC (Single Overhead Camshaft)

Displacement:

3.0 Liters (2996 cc)

Horsepower Net:

Approximately 180 hp (132 kW) @ 5700 rpm

Torque Net:

Approximately 181 lb-ft (245 Nm) @ 4400 rpm

Injection System:

Bosch KE-Jetronic Mechanical Fuel Injection with Electronic Control

Fuel Type:

Unleaded Gasoline, 91 Octane (RON+MON)/2) or higher recommended

Ignition Type:

Electronic Ignition with distributor

Coolant Type:

Mercedes-Benz Spec 325.0 or equivalent (Ethylene Glycol based)

Oil Type:

API SG or higher, SAE 10W-30 or 15W-40 depending on climate (refer to manual for specific recommendations)

Engine Block Material:

Cast Iron

Cylinder Head Material:

Aluminum Alloy

🔧 Transmission

Transmission Type:

4-speed Automatic (4G-TRONIC)

Transmission Options:

No manual transmission offered for the 300TE in this market.

Transmission Control:

Electronic control for shift points and torque converter lock-up (Brake Assist/ETS not standard on this model).

Transmission Fluid Type:

Dexron III (or Mercon) Automatic Transmission Fluid. Refer to MB spec 236.1.

📐 Dimensions

Length:

Approximately 4765 mm (187.6 in)

Width:

Approximately 1795 mm (70.7 in)

Height:

Approximately 1495 mm (58.9 in)

Wheelbase:

Approximately 2800 mm (110.2 in)

Curb Weight:

Approximately 1650 kg (3638 lbs)

Towing Capacity:

Typically around 1500-1900 kg (3300-4180 lbs), consult specific market regulations.

Cargo Volume:

Flexible; rear seats fold down. Specific volume figures vary, but designed for practicality.

🛡️ Safety Features

Crash Test Availability:

Modern crash test data for this era is limited compared to current standards. W124 chassis known for robust construction.

ABS:

Standard (Anti-lock Braking System)

Airbags:

Driver's side airbag standard.

Seatbelts:

Front and rear seatbelts, front pre-tensioners (depending on build date/market).

Body Construction:

Unitized body construction with extensive crumple zones and safety cage.

💡 Technology Features

Audio System:

Factory AM/FM Cassette player with optional CD changer. Speaker quality varies by original option package.

Cruise Control:

Standard cruise control system.

ABS:

Already mentioned under safety, but a key technological feature for braking.

Connectivity Features:

Limited by modern standards. Primarily focused on internal vehicle systems. No integrated Bluetooth or navigation.

HVAC System:

Automatic Climate Control (optional on some models, standard on higher trims). Features recirculation, defrost, and temperature regulation. Vacuum-actuated flaps are common maintenance points.

🔧 Maintenance

Oil Change Interval:

Every 15,000 km (9,300 miles) or 12 months, whichever comes first, using synthetic oil. Shorter intervals recommended for severe driving.

Air Filter Replacement:

Every 45,000 km (28,000 miles) or as needed based on inspection.

Fuel Filter Replacement:

Every 45,000 km (28,000 miles) or every 3 years.

Coolant Flush:

Every 60,000 km (37,000 miles) or 3 years.

Brake Fluid Change:

Every 2 years, regardless of mileage.

Power Steering Fluid:

ATF Dexron II or III (MB spec 236.3).

Engine Oil Capacity:

Approximately 7.5 Liters (7.9 US Quarts) with filter change.

Cooling System Capacity:

Approximately 10.0 Liters (10.6 US Quarts).

Transmission Fluid Capacity:

Approximately 8.0 Liters (8.5 US Quarts) for a dry fill (pan and converter).

Common Wear Items:

Vibrations from driveshaft flex discs, vacuum leaks (various actuators, climate control), distributor cap/rotor wear, early ABS sensor failures, potential head gasket porosity on some M103 engines, window regulator failures, HFM issues.

Body Corrosion:

Rust can form in typical areas like wheel arches, door bottoms, and near window seals, especially in humid or salted environments. Early detection and treatment are key.

📚 Vehicle History

Heritage:

Mercedes-Benz has a long-standing reputation for engineering excellence, durability, and safety, dating back to the invention of the automobile. The W124 generation (1984-1995) is highly regarded for its build quality and timeless design.

W124 Series:

The W124 was introduced in 1984 as a successor to the W123. The estate (S124) and 300TE variant debuted later. It represented a significant step forward in aerodynamics, safety, and technology for Mercedes-Benz.

Production Period:

W124 E-Class production spanned from 1984 to 1995. The 300TE variant was a key model within this range.

Manufacturing Location:

Primary production in Germany.

🏆 Awards & Recognition

Industry Acclaim:

The W124 platform, across all its variants, consistently received high marks from automotive journalists and critics for its engineering, build quality, and durability. Often cited as one of Mercedes-Benz's finest generations.

Reliability Perception:

Generally considered very reliable, though maintenance requires diligence and specific knowledge due to its sophisticated engineering. Parts availability is good through OEM and aftermarket specialists.

Manual Certification:

Officially Licensed Product (as stated in product description), indicating authenticity and accuracy.