🏷️ Basic Information

Make:

Mercedes-Benz

Model:

E-Class

Chassis Code:

W124

Model Year Covered:

1985

Generation:

First Generation (W124)

Internal Model Code:

W124

👋 Introduction

Positioning:

Premium mid-size luxury sedan, renowned for its build quality, engineering, and durability. Competed against models like the BMW 5 Series and Audi 100/200.

Competitors:

BMW 5 Series (E28/E34), Audi 100/200 (C3), Jaguar XJ6, Volvo 740/760.

Features:

Exceptional ride comfort, robust build, advanced (for its time) safety features, sophisticated engineering, long-term reliability, sophisticated styling.

📋 Manual Details

Coverage:

All models and all repairs A-Z for the specified year and chassis.

Page Count:

Not specified in product information, but described as comprehensive and extensive.

Type:

Factory Service and Repair Manual

Language:

English

Format:

Digital (PDF)

📖 Manual Coverage

Engine Mechanical:

Complete engine overhaul, rebuild procedures, component diagnostics, timing, valve adjustment, cylinder head, block, pistons, crankshaft, camshafts.

Engine Control System:

Fuel injection system (e.g., Bosch K-Jetronic or KE-Jetronic), ignition system, engine management sensors, actuators, diagnostic trouble codes, troubleshooting.

Fuel Service Specifications:

Fuel pump operation, fuel pressure testing, fuel injector servicing, fuel filter replacement, fuel tank removal and installation, fuel system schematics.

Emission Control:

Catalytic converter system, EGR (Exhaust Gas Recirculation) if applicable, secondary air injection, evaporative emission control, emissions testing procedures.

Intake Exhaust Cooling:

Intake manifold, exhaust manifold, catalytic converter, muffler, radiator, cooling fan, water pump, thermostat, coolant specifications, bleeding procedures.

Lubrication:

Oil pump, oil filter replacement, oil cooler, oil specifications, oil pan removal and installation, lubrication system diagrams.

Ignition Starting Charging:

Spark plugs, ignition coil, distributor, ignition timing, starter motor, alternator, battery, charging system diagnosis, wiring diagrams.

Automatic Transmission Clutch:

Transmission fluid checks and changes, torque converter, transmission control, internal component repair, clutch replacement (for manual versions or if applicable to specific models).

Manual Transmission:

Gearbox overhaul, clutch service, shifter mechanism, transmission fluid specifications, repair procedures.

Transfer Propeller Shaft:

Driveshaft removal and installation, universal joints, driveshaft balancing, maintenance.

Drive Shaft:

Axle shaft removal and installation, CV joints, seals, bearings.

Differential:

Differential fluid, seal replacement, differential overhaul, limited-slip differential (if equipped).

Axle Suspension:

Front and rear suspension components, control arms, ball joints, tie rod ends, bushings, shock absorbers, struts, springs, alignment specifications.

Tire Wheel:

Tire pressure recommendations, wheel bolt patterns, wheel bearing replacement, tire rotation, wheel alignment.

Brake Control:

ABS (Anti-lock Braking System) if equipped, brake booster, master cylinder, proportioning valves, hydraulic system diagnostics.

Brakes:

Brake pad replacement, brake rotor resurfacing/replacement, brake caliper service, brake fluid specifications and bleeding, parking brake adjustment.

Parking Brake:

Parking brake cable adjustment, parking brake mechanism service.

Steering Column:

Steering column removal and installation, ignition switch replacement, steering lock mechanism.

Power Steering:

Power steering pump, steering rack or gearbox, power steering fluid, flushing and bleeding, leak diagnosis.

Air Conditioning:

Refrigerant types, compressor service, A/C system charging, leak testing, climate control system diagnostics, blower motor, evaporator, condenser.

Supplemental Restraint System:

Airbag system (if equipped), SRS warning light diagnosis, seat belt pre-tensioners, airbag module replacement, seat belt service.

Seat Belt:

Seat belt retractors, buckle mechanisms, inspection and replacement.

Engine Immobilizer:

Not typically standard on 1985 models, but any related security systems would be covered.

Cruise Control:

Cruise control system operation, diagnosis, component replacement (actuator, control module, buttons).

Wiper Washer:

Wiper motor, wiper blades, washer pump, washer fluid reservoir, washer nozzles, wiper linkage.

Door Lock:

Door lock actuators, central locking system, keyless entry (if equipped), lock cylinder service.

Meter Audio Visual:

Instrument cluster functions, gauge operation, speed sensor, tachometer, fuel gauge, oil pressure gauge, audio system removal/installation, speaker replacement.

Horn:

Horn operation, horn button, horn relay, horn replacement.

Windshield Glass Mirror:

Windshield removal and installation, glass sealing, mirror adjustment and replacement, wiper blade installation.

Instrument Panel:

Instrument cluster removal and installation, illumination bulbs, indicator lights, warning lamps.

Seats:

Seat adjustment mechanisms, seat rail lubrication, seat trim repair, seat belt anchorage.

Engine Hood Door:

Hood latch mechanism, hood hinges, door latch and lock mechanisms, door alignment, door panel removal.

Exterior Interior:

Body panel alignment, trim piece removal and installation, exterior lighting, interior lighting, upholstery, carpeting, headliner.

Electrical:

Comprehensive wiring schematics, fuse box layout, relay identification, component testing, electrical troubleshooting, power windows, power locks, lighting systems, accessory circuits.

Multiplex Can Communication:

Multiplex communication systems (early forms of distributed electronic control) or CAN bus (less likely on a 1985 model, but advanced diagnostic systems might be mentioned).

Maintenance:

Regular scheduled maintenance, oil changes, filter replacements, fluid checks and top-offs, lubrication points, belt inspections, tune-up procedures.

Repair:

Component replacement, system overhauls, major and minor repairs across all vehicle systems.

Diagnostics:

Troubleshooting common and uncommon problems, diagnostic flowcharts, testing procedures for electrical and mechanical components.

Illustrations Diagrams:

Step-by-step instructions with accompanying diagrams, illustrations, and exploded views for clarity.

Wiring Schematics:

Detailed and accurate wiring schematics for all electrical systems, aiding in diagnosis and repair.

Depth:

Factory-level detail, covering everything from basic maintenance to complex diagnostics and complete component rebuilds.

📊 Manual Specifications

File Format:

PDF

Printability:

All pages are printable, allowing users to print only necessary sections or enlarged diagrams.

Binding:

Digital (no physical binding)

Paper Type:

N/A (digital format)

Compatibility:

Windows (Vista 32/64, XP, ME, 98, NT, 2000) and Mac compatible.

Requirements:

Adobe PDF Reader and Winzip (free online).

⚙️ Engine Specifications

Engine Options 1985:

Likely includes 2.3L Inline-4 (190E 2.3), 2.6L Inline-6 (190E 2.6), and 3.0L Diesel Inline-5 (190D 2.5). For the E-Class W124, common engines in 1985 would be 2.0L, 2.3L, 2.6L, 3.0L Diesel, and potentially early 3.0L petrol variants (e.g., 300E/CE/TE).

Typical Horsepower Range:

Approx. 110-160 hp for petrol, 70-90 hp for diesel, depending on specific engine and market.

Fuel Delivery:

Bosch K-Jetronic (CIS) or KE-Jetronic (CIS-E) mechanical fuel injection for petrol engines. Indirect diesel injection for diesel engines.

🔧 Transmission

Standard Transmission:

Often a 4-speed or 5-speed manual transmission was standard on lower-end models. A 4-speed automatic was a very common option.

Optional Transmission:

4-speed automatic transmission (e.g., 722.3 or 722.4).

Transmission Features:

Robust and durable transmissions, with the automatic offering comfortable driving and efficient performance for its era.

📐 Dimensions

Body Styles:

Sedan (W124), Coupe (C124), Wagon/Estate (S124), Convertible (A124).

Typical Wheelbase:

Sedan: Approx. 2800 mm (110.2 in).

Curb Weight Range:

Approx. 1400-1650 kg (3086-3638 lbs) depending on body style and engine.

🛡️ Safety Features

Safety Ratings Era:

While formal crash test ratings like NHTSA/Euro NCAP were less standardized in 1985, the W124 was known for its strong safety cell, crumple zones, and robust construction, contributing to excellent passive safety.

Active Safety Features:

Four-wheel disc brakes, optional Anti-lock Braking System (ABS) became available during the W124's lifespan and could be present on later 1985 models.

Passive Safety Features:

Reinforced body structure, energy-absorbing steering column, seat belts (with optional pre-tensioners for front belts later in the model run), padded interior surfaces.

💡 Technology Features

Infotainment Systems:

Basic factory-installed AM/FM radio with cassette player. Speakers in doors and rear deck. Some models may have had optional premium sound systems.

Driver Assistance Features:

Optional ABS. Cruise control. Headlight washers/wipers (on some models).

Connectivity:

No modern connectivity features like Bluetooth or USB. Analog systems.

🔧 Maintenance

Oil Change Interval:

Typically every 10,000-15,000 km (6,000-9,000 miles) or annually, depending on driving conditions and specific engine. Check manual for exact recommendation.

Transmission Fluid Interval:

Automatic transmission fluid and filter change typically recommended every 40,000-60,000 km (25,000-37,000 miles).

Engine Oil Spec:

Dependent on climate and engine type. Common specifications include API SG or higher, with viscosity grades like 10W-40 or 15W-40. Refer to manual for precise MB-approval codes.

Coolant Spec:

Ethylene glycol-based coolant, typically a 50/50 mix with distilled water. Mercedes-Benz specifications (e.g., MB-325.0) are crucial.

Brake Fluid Spec:

DOT 3 or DOT 4 brake fluid.

Common W124 Issues:

Wiring harness deterioration (especially insulation), vacuum line leaks, differential seal leaks, cooling system component wear (hoses, radiator), suspension bushing wear, early rust points (wheel arches, sills).

📚 Vehicle History

Mercedes Benz Legacy:

Mercedes-Benz has a long history of producing durable, high-quality, and technologically advanced vehicles, establishing a reputation for luxury, engineering excellence, and safety.

W124 Development:

The W124 was designed to be a successor to the W123, with a strong emphasis on aerodynamics, weight reduction, and improved ride comfort. It was engineered for durability and longevity, with many examples still on the road today.

W124 Production Years:

1984-1995 (W124 chassis). The 1985 model year falls into the early production phase.

🏆 Awards & Recognition

Industry Accolades:

While specific awards for the 1985 model year are not readily available, the W124 series as a whole is widely recognized for its exceptional engineering, build quality, and longevity. It is frequently cited in automotive journalism as one of the best Mercedes-Benz models ever produced and a benchmark for its class.