Segment:
Luxury Executive Sedan
Competitors:
BMW 7 Series, Mercedes-Benz S-Class, Audi A8, Porsche Panamera, Jaguar XJ
Design Philosophy:
Italian design heritage combined with performance, luxury, and a focus on driver engagement.
Powertrain Emphasis:
Naturally aspirated V8 engine providing a distinctive exhaust note and linear power delivery.
Manual Value Proposition:
Provides professional-level repair and maintenance data for owners and independent workshops to maintain the vehicle's performance and longevity.
Mechanical:
Engine, Transmission, Drivetrain, Suspension, Steering, Brakes
Electrical:
Wiring Diagrams, ECUs, Sensors, Lighting, Audio System
Bodywork:
Body Panels, Chassis, Interior Trim, Doors, Windows
Diagnostic:
Troubleshooting Guides, Fault Codes, Diagnostic Procedures
Estimated Pages:
Hundreds (exact number not specified, but stated as extensive)
Type:
Factory Service Repair Workshop Manual
Engine System:
Complete engine disassembly, assembly, tuning, and component replacement for the 4.2L V8 engine, including timing, lubrication, cooling, and fuel injection systems.
Transmission System:
Service and repair procedures for the automatic transmission, including fluid changes, valve body diagnosis, and electronic control unit (ECU) interactions.
Drivetrain System:
Maintenance and repair of the rear-wheel drive system, including driveshafts, differentials, and axles.
Suspension And Steering:
Detailed procedures for front and rear suspension components, adaptive damping systems (if equipped), power steering system, and wheel alignment specifications.
Brake System:
Service, repair, and bleeding procedures for the hydraulic braking system, including ABS, EBD, and potential brake-assist systems.
Electrical System:
Comprehensive wiring diagrams, component locations, diagnostic procedures for ECUs, sensors, ignition system, lighting, power windows, seats, climate control, and infotainment.
Body And Chassis:
Information on body panel removal and installation, door mechanisms, interior trim, glass replacement, and structural components.
Routine Maintenance:
Oil and filter changes, fluid level checks and top-offs, air filter replacement, spark plug replacement, brake pad and rotor inspection/replacement.
Troubleshooting:
Systematic diagnosis of common and uncommon problems, including symptom-based troubleshooting charts and fault code interpretations.
Component Repair Rebuild:
Step-by-step instructions for overhauling major components such as the engine, transmission, and suspension parts.
Diagnostic Testing:
Procedures for using diagnostic scan tools, checking sensor readings, and performing specific system tests.
Specifications And Tolerances:
Torque values, clearances, fluid capacities, and other critical specifications for all repair procedures.
Depth:
Comprehensive, covering basic maintenance to full engine and transmission rebuilds, including detailed electrical schematics and diagnostic information.
Engine Type:
Naturally Aspirated V8
Displacement:
4.2 Liters (4244 cc)
Valve Train:
DOHC (Double Overhead Camshafts), 4 Valves per Cylinder, Variable Valve Timing (VVT)
Bore X Stroke:
95.0 mm x 75.0 mm (approximate)
Compression Ratio:
11.4:1 (typical for this engine)
Horsepower:
335-400 hp @ 6000-6800 rpm (depending on specific model year/variant)
Torque:
317-330 lb-ft @ 4500-5000 rpm (depending on specific model year/variant)
Fuel Delivery:
Multi-point Fuel Injection (MPI)
Fuel Type:
Premium Unleaded Gasoline (91 octane or higher recommended)
Oil Capacity:
Approximately 8.5 Liters (8.9 US quarts) - Refer to manual for exact spec and type.
Recommended Oil Spec:
Refer to manual for specific viscosity (e.g., 0W-40 or 5W-40) and API/ACEA specifications.
Transmission Type:
6-Speed Automatic (ZF 6HP26/6HP28)
Optional Transmission:
N/A for this engine variant and model generation.
Gear Ratios:
Refer to manual for detailed gear ratios and final drive ratio.
Transmission Fluid Type:
Refer to manual for specific ZF Lifeguard Fluid specification (e.g., Lifeguardfluid8).
Transmission Fluid Capacity:
Refer to manual for exact capacity for fluid change or complete refill.
Length:
Approx. 5050 mm (198.8 in)
Width:
Approx. 1895 mm (74.6 in)
Height:
Approx. 1440 mm (56.7 in)
Curb Weight:
Approx. 1950-2000 kg (4300-4410 lbs)
Wheelbase:
Approx. 3000 mm (118.1 in)
Wheel Bolt Pattern:
5x114.3 mm
Tire Sizes:
Commonly 245/40 R19 front, 275/35 R19 rear (check manual for variations)
Crash Test Ratings:
N/A specific official ratings for all markets, but designed to meet international safety standards. Refer to vehicle's original market homologation.
Braking System:
ABS (Anti-lock Braking System), EBD (Electronic Brake-force Distribution), potentially Brake Assist.
Stability Control:
ASR (Anti-Slip Regulation), potentially Maserati Stability Program (MSP) or similar electronic stability control.
Airbags:
Front, side, and curtain airbags as standard. Specific count may vary by region.
Seatbelts:
Pretensioning seatbelts with force limiters.
System Overview:
Features include navigation, premium audio systems (e.g., Bose, Harman Kardon), climate control, and infotainment system controls.
Features:
Cruise control, parking sensors (front and rear), potentially adaptive cruise control, and reverse parking camera on later models.
Connectivity Options:
Typically includes CD player, radio, possibly auxiliary input. Later models might feature Bluetooth connectivity.
Oil Change Interval:
Typically 15,000 km (9,300 miles) or 12 months, whichever comes first. Refer to manual for precise recommendation.
Major Service Interval:
Significant service typically around 60,000 km (37,000 miles) or as per manual, often including spark plugs, transmission service, and other fluid checks.
Engine Coolant:
Specify Maserati/Mopar Blue Antifreeze or equivalent with appropriate concentration.
Brake Fluid:
DOT 4 or higher specification brake fluid.
Common Wear Items:
Brake components (pads, rotors), suspension bushings, exhaust system components, and potentially ignition coils/spark plugs.
Potential Electrical Gremlins:
Due to the complex electrical systems, occasional sensor failures or electronic module issues can arise. The manual's diagnostic section is crucial here.
Transmission Service:
Regular transmission fluid and filter changes are critical for the longevity of the ZF automatic gearbox.
Heritage:
Maserati, founded in 1914, is renowned for its luxury sports cars and racing pedigree.
Quattroporte Lineage:
The Quattroporte nameplate signifies a 'four-door' flagship sedan, with a history dating back to the 1960s, consistently blending performance and luxury.
M139 Generation:
The M139 generation (2003-2012) was a significant redesign, moving to a larger platform and offering a more luxurious and spacious interior compared to its predecessors.
Manufacturing Location:
Grugliasco, Turin, Italy
