🏷️ Basic Information

Make:

Mercedes-Benz

Model:

E320

Year:

1997

Chassis Code:

W210

Engine Code:

M104.992

👋 Introduction

Positioning:

The Mercedes-Benz E320 (W210) represented the mid-size luxury sedan segment, competing with vehicles like the BMW 5 Series and Audi A6. Known for its robust engineering, comfort, and advanced features for its era.

Competition:

Competitors included the BMW 5 Series (E39), Audi A6 (C4/C5), Lexus GS300, and Cadillac Seville. The E320 distinguished itself with its refined ride, Mercedes-Benz build quality, and sophisticated styling.

Features:

Comfort-oriented suspension, powerful inline-six engine, available advanced safety features (e.g., ESP, side airbags), high-quality interior materials, and classic Mercedes-Benz design.

📋 Manual Details

Coverage:

Comprehensive repair and service for 1997 Mercedes-Benz E320 (W210).

Estimated Pages:

Approximately 2000+ pages (typical for a full factory service manual).

Type:

Factory Repair Service Manual.

Language:

English.

Format:

PDF Download.

📖 Manual Coverage

Engine Mechanical:

Engine removal and installation, cylinder head overhaul, piston and connecting rod service, crankshaft and main bearing service, camshaft and valve train repair, timing chain and tensioner replacement, oil pump and lubrication system, cooling system.

Engine Electrical:

Engine control module (ECM) diagnosis and repair, ignition system (spark plugs, coils, wiring), fuel injection system (injectors, fuel pump, pressure regulator), starting system (starter motor), charging system (alternator, voltage regulator).

Transmission:

Automatic transmission (5G-TRONIC 722.6) service, removal and installation, torque converter replacement, internal component repair, valve body diagnosis, transmission fluid and filter change.

Drivetrain:

Rear-wheel drive system, driveshaft service, universal joints, rear axle differential service, wheel hub and bearing replacement.

Suspension:

Front suspension (struts, control arms, ball joints, bushings), rear suspension (multi-link, shock absorbers, springs, bushings), steering system (power steering pump, steering gear, tie rods).

Brakes:

Hydraulic brake system, ABS (Anti-lock Braking System) diagnosis and repair, brake fluid flush and bleed, brake pad and rotor replacement, caliper service, parking brake system.

Electrical System:

Wiring diagrams, fuses and relays, lighting system (headlights, taillights, interior lights), power windows and locks, sunroof operation, instrument cluster and gauges, climate control system (HVAC), body control module (BCM) functions.

Body And Interior:

Body panel removal and installation, door mechanisms, interior trim, seat adjustment and removal, airbag system safety precautions and service.

Maintenance Procedures:

Scheduled maintenance, oil and filter changes, air filter replacement, spark plug replacement, coolant flush and fill, brake fluid change, transmission fluid and filter service, differential fluid change.

Diagnostic Procedures:

Troubleshooting guides, fault code interpretation, diagnostic scan tool usage, system-specific diagnostic trees.

Repair Procedures:

Step-by-step repair instructions for all major vehicle components, including detailed diagrams and torque specifications.

Assembly Disassembly:

Complete instructions for the removal, disassembly, inspection, repair, and reassembly of all mechanical and electrical components.

Depth:

Factory-level technical information, suitable for professional technicians and advanced DIY enthusiasts. Covers everything from basic adjustments to complete component overhauls.

📊 Manual Specifications

Format Details:

High-resolution PDF, optimized for digital viewing and printing. Searchable text for easy navigation.

Quality:

Excellent clarity, sharp images, and legible text.

Type:

N/A (Digital PDF download).

Type:

N/A (Digital PDF download).

⚙️ Engine Specifications

Engine:

3.2L M104.992 Inline-6 DOHC

Horsepower:

217 hp @ 5500 rpm

Torque:

229 lb-ft @ 3750 rpm

System:

Bosch Motronic M5.2 fuel injection.

Fuel:

Unleaded gasoline (premium recommended).

Coolant Type:

Mercedes-Benz approved ethylene glycol-based coolant (e.g., PN 000 989 08 25 10).

Oil Type:

SAE 10W-30 or 10W-40 synthetic oil meeting MB-Approval 229.1 specification. Consult manual for exact seasonal recommendations.

ECU:

Bosch Motronic M5.2.

🔧 Transmission

Transmission Type:

5-speed automatic (722.6 '5G-TRONIC').

Transmission Type:

None offered for E320 in 1997.

Features:

Electronic control, sport and comfort modes, adaptive shifting.

Fluid Type:

MB Automatic Transmission Fluid (ATF) specification 236.10 (e.g., PN 001 989 22 03 10).

Capacity Approx:

8.0 - 9.5 Liters (depending on torque converter fill).

📐 Dimensions

Length:

188.5 inches (4788 mm)

Width:

70.2 inches (1783 mm)

Height:

55.8 inches (1417 mm)

Wheelbase:

111.5 inches (2832 mm)

Curb Weight:

Approx. 3700-3800 lbs (1680-1725 kg)

Gross Weight Rating:

Approx. 4718 lbs (2140 kg)

Trunk Capacity:

15.0 cu ft (425 L)

🛡️ Safety Features

NHTSA Front Impact:

4-star driver, 4-star passenger (for 1997 model year).

IIHS Side Impact:

Good (for vehicles of its class and year, though specific ratings can vary).

ABS:

Standard Anti-lock Braking System (ABS).

Esp:

Optional Electronic Stability Program (ESP).

Airbags:

Dual front airbags, optional side airbags (SRS).

Seatbelts:

3-point inertia-reel seatbelts with pretensioners.

Rollover Protection:

Reinforced body structure, headrests.

💡 Technology Features

Head Unit:

Mercedes-Benz Audio 30, Audio 10, or optional COMAND system (later models). Features AM/FM radio, CD player, cassette tape deck.

Display:

Central information display in instrument cluster, optional navigation screen for COMAND.

Cruise Control:

Standard electronic cruise control.

Parking Assist:

Optional rear park assist sensors on some models.

System:

Automatic Climate Control (ACC) with manual override, dual-zone climate control on some trims.

Connectivity Features:

Limited by era; typically no Bluetooth or USB connectivity. Aftermarket solutions may be available.

🔧 Maintenance

Oil Change:

Every 7,500-10,000 miles (12,000-16,000 km) or annually, whichever comes first, using synthetic oil. Refer to 'Service A' or 'Service B' indicators on the vehicle's display.

Transmission Service:

Recommended every 40,000-60,000 miles (60,000-100,000 km) for fluid and filter change. This is a critical service for the 722.6 transmission.

Coolant Change:

Every 2-3 years or 30,000-50,000 miles (50,000-80,000 km).

Brake Fluid Change:

Every 2 years, regardless of mileage.

Power Steering Fluid:

Mercedes-Benz Hydraulic Fluid specification 343.0 (e.g., PN 001 989 20 03).

Coolant Capacity:

Approximately 8.0 Liters.

Common Problems:

MAf sensor failures, EGR valve issues (if applicable), vacuum hose leaks leading to rough idle or stalling, biodegradable wiring harness insulation degradation, cooling fan clutch failure, early 722.6 transmission conductor plate issues, rust (especially on fenders, rocker panels, and door bottoms).

Common Repairs:

Replacement of engine mounts, transmission mounts, suspension bushings, sway bar links, serpentine belt, and various sensors.

Oil Filter:

Mann-Filter HU 715/1x or equivalent OEM part.

Air Filter:

Mann-Filter C 34 102 or equivalent OEM part.

Cabin Filter:

Mann-Filter CU 2319 or equivalent OEM part.

Tire Size Standard:

215/55R16

Bolt Pattern:

5x112mm

Center Bore:

66.5mm

📚 Vehicle History

Heritage:

Mercedes-Benz, founded in 1926, is renowned for its pioneering innovations in automotive engineering, safety, and luxury, with a long history of producing high-quality, durable vehicles.

Evolution:

The W210 chassis replaced the W124 generation E-Class and introduced a more modern, rounded design language, moving away from the boxier styling of its predecessor. The 1997 model year was the introduction of the W210 platform to North America.

Production Years:

W210 E-Class: 1995-2002 (European market), 1996-2003 (North American market).

Manufacturing Locations:

Primary manufacturing in Sindelfingen, Germany, with some production in other Mercedes-Benz plants globally.

🏆 Awards & Recognition

Industry Awards:

While specific awards for the 1997 E320 are not prominently documented as standalone awards, the W210 E-Class generation was generally well-regarded by automotive press for its safety, engineering, and comfort, often appearing on 'best of' lists for its segment during its production run.

Consumer Reports Ratings:

Consumer Reports ratings for this era of Mercedes-Benz often highlighted reliability concerns in certain areas (e.g., electrical components) while praising overall build quality and driving dynamics. Specific annual ratings would need to be consulted.

Safety Certifications:

Met all US Federal Motor Vehicle Safety Standards (FMVSS) for 1997, including passive restraint requirements and crashworthiness standards.