Vehicle Segment:
Compact luxury sports roadster.
Target Demographic:
Enthusiasts seeking a premium, compact convertible driving experience.
Key Competitors:
BMW Z3, Porsche Boxster (early models), Audi TT (later).
Convertible Top:
Vario-Roof: retractable hardtop system.
Driving Dynamics:
Rear-wheel drive, balanced chassis, engaging handling.
Brand Prestige:
Represents Mercedes-Benz's entry into the compact sports roadster market.
Engine Mechanical:
Detailed diagnostics, repair, overhaul, assembly/disassembly of engine components.
Engine Management:
Fuel injection, ignition system, emission control, sensor diagnostics.
Transmission Manual:
Repair, maintenance, and troubleshooting for manual gearbox.
Transmission Automatic:
Repair, maintenance, and troubleshooting for automatic transmission (e.g., 5G-TRONIC).
Suspension:
Front and rear suspension components, shock absorbers, springs, bushings, alignment.
Steering:
Power steering system, steering rack, tie rods, steering column.
Brakes:
Hydraulic system, ABS, brake discs, pads, calipers, lines, parking brake.
Electrical System:
Wiring diagrams, battery, alternator, starter, lighting, fuses, relays.
Body And Chassis:
Body panels, doors, convertible top mechanism (Vario-Roof), chassis components, corrosion protection.
Climate Control:
Air conditioning system, heater, ventilation, climate control unit diagnostics.
Restraint System:
Airbag system, seat belts, SRS module diagnostics.
Interior Trim:
Dashboard, seats, door panels, carpet removal and installation.
Scheduled Maintenance:
Detailed service intervals and procedures (e.g., oil changes, filter replacements).
Troubleshooting:
Systematic diagnostic procedures for identifying and resolving common and uncommon faults.
Repair Procedures:
Step-by-step instructions for component removal, installation, and repair.
Diagnostics:
OBD-II diagnostics, specific Mercedes-Benz diagnostic trouble codes (DTCs) and their interpretations.
Calibration And Adjustment:
Procedures for aligning suspension, setting engine parameters, etc.
Depth Of Information:
Comprehensive, from basic fluid checks to complete engine rebuilds and electrical system diagnostics.
Target Audience:
Professional technicians and knowledgeable DIY enthusiasts.
Detail Level:
Includes torque specifications, clearance measurements, component tolerances, and wiring schematics.
Digital File Type:
PDF (Portable Document Format)
Searchability:
Likely text-searchable PDF for easy information retrieval.
Printable:
Yes, designed for printing individual pages or the entire document.
Typical Binding If Printed:
Spiral-bound or comb-bound for lay-flat usability (when printed by user).
Recommended Paper If Printed:
Standard printer paper or heavier stock for durability.
Engine Code 1998 Usdm:
M111.940 (2.0L)
Engine Type 1998 Usdm:
Inline-4, Supercharged (Kompressor)
Displacement 1998 Usdm:
1998 cc (2.0 Liters)
Bore X Stroke 1998 Usdm:
87.5 mm x 92.4 mm
Compression Ratio 1998 Usdm:
8.8:1
Horsepower 1998 Usdm:
130 kW (177 hp) @ 5300 rpm (approx.)
Torque 1998 Usdm:
270 Nm (199 lb-ft) @ 2500 rpm (approx.)
Fuel Delivery:
Bosch Motronic ME 2.0 electronic fuel injection
Fuel Type:
Premium Unleaded Gasoline (91+ Octane)
Optional Engine 1998 Usdm:
M111.955 (2.3L Supercharged)
Displacement 2.3L:
2295 cc (2.3 Liters)
Horsepower 2.3L:
145 kW (197 hp) @ 5300 rpm (approx.)
Torque 2.3L:
270 Nm (199 lb-ft) @ 2500 rpm (approx.)
Standard Transmission Type:
5-Speed Manual
Optional Transmission Type:
5-Speed Automatic (722.6 - 5G-TRONIC)
Automatic Transmission Features:
TouchShift (manual shifting mode)
Automatic Transmission Fluid:
MB 236.10 or 236.12 (e.g., Mobil ATF 134, Pentosin ATF 1)
Manual Transmission Fluid:
MB 235.10 (or equivalent API GL-4 SAE 75W-85)
NHTSA Ratings 1998:
Not directly applicable for this model year/segment in all markets, but built to high Mercedes-Benz safety standards.
Traction Control:
ASR (Anti-Slip Regulation) - Standard on most models
Brake Assist:
BAS (Brake Assist System)
Anti Lock Brakes:
ABS (Anti-lock Braking System) - Standard
Airbags:
Driver and passenger front airbags. Optional side airbags.
Rollover Protection:
Pop-up roll bars behind headrests (deploy automatically or manually).
Seat Belts:
Pretensioner equipped seat belts.
Oil Change Interval:
Typically every 10,000-15,000 miles or 12 months, whichever comes first (varies by oil type and driving conditions). Refer to service schedule A/B.
Engine Air Filter Replacement:
Check at ~15,000 miles, replace as needed or at ~30,000 miles.
Cabin Air Filter Replacement:
Typically every 15,000-20,000 miles or 12 months.
Spark Plug Replacement:
Refer to manual; often iridium plugs with longer intervals (e.g., 60,000-100,000 miles).
Engine Oil Type:
MB 229.1 or 229.3 (e.g., Castrol Syntec 5W-40, Mobil 1 0W-40).
Coolant Type:
MB 325.0 (Antifreeze/Coolant concentrate, blue color).
Power Steering Fluid:
MB 236.3 (Pentosin CHF 11S or equivalent).
Vario Roof Actuators:
Potential for hydraulic leaks or faulty actuators in the convertible top mechanism.
Mass Airflow Sensor:
Can become dirty or fail, leading to rough idle or poor performance.
Crankshaft Position Sensor:
Failure can cause no-start or intermittent stalling.
Blower Motor Resistor:
Common failure leading to non-functioning climate control fan speeds.
Srs Module Warnings:
Occasional illumination of the SRS warning light due to sensor or module issues.