Vehicle Segment:
Full-size luxury sedan.
Target Audience:
Owners of 1998 Mercedes-Benz S320 seeking to perform their own maintenance and repairs or understand the vehicle's technical systems.
Competitors:
BMW 7 Series (E38), Audi A8 (D2), Lexus LS400 (XF20).
Manual Advantage:
Officially licensed, providing accurate and manufacturer-specific repair procedures and specifications, crucial for complex luxury vehicles.
Software Benefit:
Instant download and access, searchable text, and digital format for ease of use in a workshop environment.
Engine:
Complete diagnosis, repair, and maintenance for the M112 E32 V6 engine.
Transmission:
Repair, overhaul, and diagnosis of the 722.6 '5G-TRONIC' automatic transmission.
Brakes:
Front and rear brake system diagnosis, repair, ABS/BAS operation, and fluid services.
Suspension:
Front and rear independent suspension, shock absorbers, springs, control arms, and alignment procedures.
Steering:
Power steering system diagnosis, pump, rack, and linkage repair.
Electrical:
Comprehensive wiring diagrams, component testing, diagnosis of lighting, power accessories, and body control modules.
Climate Control:
Diagnosis and repair of HVAC system, A/C compressor, refrigerant, climate control unit, and blower motor.
Bodywork:
Exterior panel alignment, door mechanisms, latches, seals, and interior trim removal/installation.
Body Electronics:
Power windows, seats, mirrors, sunroof, central locking, and keyless entry system diagnosis.
Safety Systems:
SRS airbag system diagnosis and component replacement procedures.
Maintenance:
Scheduled maintenance tasks, fluid changes, filter replacements, and inspection points.
Troubleshooting:
Diagnostic flowcharts and symptom-based troubleshooting for common and complex issues.
Repair:
Detailed step-by-step instructions for component removal, repair, and reinstallation.
Diagnostics:
Procedures for using diagnostic tools (e.g., STAR DIAGNOSIS) and interpreting fault codes.
Calibration:
Procedures for recalibrating electronic systems after component replacement (e.g., throttle body, steering angle sensor).
Depth Level:
Comprehensive, from basic maintenance to advanced engine and transmission overhauls, including electrical system diagnostics.
Format Details:
Digital software, likely viewable with standard PDF readers or proprietary viewing software. Expect searchable text and high-resolution diagrams.
Quality Description:
High-quality digital reproduction of official factory service information, including detailed illustrations and schematics.
Binding Description:
Not applicable for software format. If a printable version is implied, it would typically be digital files.
Paper Description:
Not applicable for software format. Digital files provide instant access.
Transmission Type:
5-speed Automatic (722.6 '5G-TRONIC')
Gear Ratios:
Refer to manual for specific ratios (typically around 3.60 first gear).
Transmission Features:
Electronic control, torque converter lock-up, driver-selectable modes (Comfort/Sport).
Transmission Fluid Type:
MB 236.10 Automatic Transmission Fluid (ATF)
Transmission Fluid Capacity:
Approximately 8.0 - 9.0 liters for a complete refill (refer to manual for exact quantity).
NHTSA Front Impact:
4-star driver, 4-star passenger (as per NHTSA ratings for similar period vehicles, specific 1998 data may vary).
ABS:
Anti-lock Braking System (ABS) standard.
Bas:
Brake Assist System (BAS) standard.
Esp:
Optional Electronic Stability Program (ESP) may have been available or integrated into ABS/ASR systems.
Airbags:
Driver and front passenger airbags, side airbags (optional or standard depending on market/trim).
Seatbelts:
Three-point inertia-reel seatbelts with pretensioners.
Rollover Protection:
Reinforced body structure and A-pillars.
Audio System:
Factory radio/cassette/CD player with amplifier and speaker system.
Navigation:
Optional COMAND (Cockpit Management and Navigation Device) system available.
Cruise Control:
Standard cruise control system.
Parking Assist:
Optional front and rear parking sensors (Parktronic).
Telephony:
Optional integrated car phone system.
Oil Change Interval:
Typically every 10,000 miles or 12 months, whichever comes first, using synthetic oil.
Major Service Interval:
Refer to manual for 'B' service, often around 30,000 miles or 24 months, including spark plugs, filters, and fluid checks.
Engine Oil Type:
MB 229.1 or MB 229.3 (SAE 0W-40 or 5W-40 synthetic recommended).
Coolant Type:
MB 325.0 (Ethylene Glycol based coolant, typically blue).
Brake Fluid Type:
DOT 4 (MB recommends DOT 4 PLUS or similar quality).
Engine Oil Capacity:
Approximately 8.0 liters (with filter change).
Ignition Coils:
Premature failure of single ignition coils can lead to misfires.
Mass Air Flow Sensor:
Can become contaminated, leading to rough idle or poor performance.
Suspension Components:
Wear in control arm bushings and ball joints, leading to clunking noises or poor handling.
Blower Motor Resistor:
Failure can result in the blower fan only working on high speed.
Nr Sensor:
Non-Returner Sensor (related to ABS/ESP) can fail, causing warning lights.
O2 Sensors:
Degradation of oxygen sensors can affect fuel mixture and emissions.
Manufacturer Legacy:
Mercedes-Benz has a long-standing reputation for luxury, engineering excellence, and pioneering automotive safety and technology.
W220 Introduction:
The W220 S-Class replaced the W140 generation and marked a shift towards more streamlined styling, lighter construction, and advanced electronics.
Engine Change:
Introduction of the M112 V6 engine, replacing previous inline-6 and V8 engines in some configurations for improved efficiency and emissions.
Production Period:
1998-2005 (W220 generation).
Manufacturing Locations:
Germany.
