Segment:
Luxury Grand Tourer / Personal Luxury Car
Target Audience:
Affluent individuals seeking a high-performance, luxurious, and technologically advanced convertible.
Key Competitors:
BMW 8 Series Convertible, Jaguar XJS, Porsche 911 Cabriolet (964).
Design:
Iconic Pininfarina-influenced styling, robust build quality, sophisticated retractable hardtop (Vario-roof).
Performance:
Powerful V8 engine, refined ride and handling, strong acceleration.
Luxury Appointments:
Premium leather interior, wood trim, advanced (for its time) climate control and comfort features.
Engine Mechanical:
Full engine teardown, rebuild, timing, valve adjustments, piston/ring replacement.
Engine Electrical:
Ignition system, fuel injection (KE-Jetronic/MEC systems), sensors, ECU diagnostics, wiring diagrams.
Transmission:
4-speed automatic transmission (722.3xx series) overhaul, adjustments, hydraulic system, electronic controls.
Drivetrain:
Differential, driveshafts, CV joints, driveshaft center bearing.
Suspension:
Front and rear independent suspension, shock absorbers, springs, control arms, ball joints, bushings.
Steering:
Power steering system, steering rack, tie rods, steering column.
Brakes:
Hydraulic brake system, ABS (Anti-lock Braking System) diagnostics and repair, brake fluid, calipers, pads, rotors, lines.
Cooling System:
Radiator, water pump, thermostat, coolant hoses, heater core, climate control system.
Fuel System:
Fuel tank, fuel pump, fuel lines, fuel filter, fuel injectors, pressure regulator.
Exhaust System:
Exhaust manifolds, catalytic converter, mufflers, pipes, hangers.
Electrical System:
Battery, alternator, starter motor, lighting, fuses, relays, body control modules, power windows, seats, mirrors.
Climate Control:
Air conditioning system, heater, ventilation, automatic climate control operation and repair.
Body:
Body panels, doors, hood, trunk, convertible top mechanism and hydraulics, interior trim.
Diagnostic Troubleshooting:
Extensive troubleshooting guides, fault codes, diagnostic procedures, testing methods.
Routine Maintenance:
Oil changes, filter replacements, spark plug replacement, fluid checks and top-offs, belt inspection/replacement.
Major Repairs:
Engine rebuilding, transmission overhauls, suspension component replacement, brake system overhauls.
Electrical Diagnostics:
Wiring diagram interpretation, component testing, circuit tracing, fault diagnosis for electrical systems.
Convertible Top Repair:
Detailed instructions for convertible top hydraulic system maintenance, leak troubleshooting, and actuator replacement.
ABS System Repair:
Specific procedures for diagnosing and repairing the ABS system, including sensor replacement and hydraulic unit service.
Troubleshooting Charts:
Systematic diagnostic flowcharts for common issues and symptoms.
Depth Level:
Professional-level detailed repair and diagnostic information.
Diagnostics:
Advanced diagnostic strategies, OBD-I scan tool usage (where applicable), specific testing procedures.
Torque Specifications:
Complete listing of all critical torque specifications for engine, chassis, and body fasteners.
Clearances And Tolerances:
Precise specifications for component clearances and operating tolerances during rebuilds.
Special Tools:
Identification and usage of specialized Mercedes-Benz tools required for specific repair procedures.
Engine Type:
V8, Naturally Aspirated
Displacement:
4973 cc (5.0 Liters)
Bore X Stroke:
96.0 mm x 85.0 mm
Compression Ratio:
10.0:1
Valve Train:
SOHC (Single Overhead Camshaft), 4 valves per cylinder (32 valves total)
Horsepower:
326 PS (322 hp) @ 5500 rpm
Torque:
480 Nm (354 lb-ft) @ 3900 rpm
Injection System:
Bosch KE-Jetronic Electronic Fuel Injection with Lambda Control
Fuel Type:
Unleaded Premium Gasoline (91 Octane or higher)
Oil Type:
API SG, ACEA A2-96 or equivalent (e.g., Mobil 1 15W-40 or 10W-40, Castrol GTX 15W-40)
Oil Capacity:
8.0 Liters (8.5 US Quarts)
Coolant Type:
Mercedes-Benz Approved Antifreeze/Coolant (Glycol-based, MB-Approval 325.0, typically blue or green)
Coolant Capacity:
12.5 Liters (13.2 US Quarts)
Oil Change Interval:
Every 10,000 km (6,000 miles) or 12 months, whichever comes first, using the specified synthetic oil.
Transmission Fluid Change:
Every 60,000 km (36,000 miles) or 48 months, including filter replacement.
Brake Fluid Flush:
Every 24 months, regardless of mileage.
Coolant Flush:
Every 2-3 years or as recommended by coolant type.
Spark Plug Replacement:
Typically every 50,000 km (30,000 miles) for standard spark plugs, or as specified by the manual.
Power Steering Fluid:
Mercedes-Benz Specification 343.0 (or Pentosin CHF 11S)
Brake Fluid:
DOT 4 (Mercedes-Benz Specification 331.0)
Windshield Washer Fluid:
Water-based washer fluid with antifreeze additive as needed.
Wiring Harness Issues:
Degradation of insulation on engine wiring harnesses (especially around the engine bay) can lead to shorts and malfunctions.
Convertible Top Hydraulics:
Leaking hydraulic lines or pump failures in the convertible top system.
Mass Air Flow Sensor:
Failure of the MAF sensor can cause rough idling, poor acceleration, and poor fuel economy.
Crankshaft Position Sensor:
Failure can result in the engine not starting or stalling unexpectedly.
ABS Hydraulic Unit:
Potential failure of the ABS hydraulic unit, leading to ABS warning lights and loss of ABS function.
Interior Electronics:
Issues with power windows, seat motors, or climate control systems due to aging components or wiring.