Segment:
Full-size Luxury Sedan
Competitors:
Mercedes-Benz S-Class, Audi A8, Lexus LS, Jaguar XJ, Porsche Panamera (later models)
Distinguishing Features:
Advanced technology integration, luxurious interior, powerful engine options, sophisticated ride and handling, iDrive infotainment system.
Primary Users:
BMW dealership technicians, independent repair shops specializing in BMW, advanced DIY enthusiasts.
Powertrain:
Engine, Fuel System, Ignition System, Exhaust System, Cooling System, Lubrication System
Transmission:
Automatic Transmission (e.g., GM 5L40-E, ZF 6HP series) and its control systems
Drivetrain:
Driveshafts, Differential, Axles, Wheel Bearings
Suspension Steering:
Front and Rear Suspension (e.g., Double Wishbone, Multi-link), Adaptive Drive, Power Steering System (Hydraulic or Electric Power Steering)
Brakes:
Hydraulic Brake System, ABS, DSC (Dynamic Stability Control), Brake Servos, Brake Calipers, Rotors, Pads, Parking Brake
Electrical Electronic:
Battery, Alternator, Starter Motor, Lighting System, Fuses and Relays, ECUs (Engine Control Unit, Transmission Control Unit, Body Control Module, etc.), CAN Bus Communication Network, Infotainment System Wiring, Sensors, Actuators
Body Chassis:
Chassis components, Body panels, Doors, Hood, Trunk, Glass, Body repair, Corrosion prevention
HVAC:
Heating, Ventilation, and Air Conditioning System, Climate Control Unit, Components (Compressor, Evaporator, Condenser)
Comfort Features:
Power seats, Sunroof, Central locking, Power windows, Keyless entry
Routine Maintenance:
Oil and filter changes, Air filter replacement, Spark plug replacement, Fluid level checks and top-offs, Brake pad and rotor inspection/replacement, Tire rotation
Diagnostics:
Troubleshooting guides, Fault code interpretation (OBD-II), Diagnostic procedures for various systems
Major Repairs:
Engine component replacement (e.g., timing chain, pistons), Transmission overhaul, Suspension component replacement, Brake system repair, Electrical system repair, HVAC system repair
Component Replacement:
Detailed removal and installation procedures for all major components
Special Procedures:
Wiring diagrams, Vacuum diagrams, Torque specifications, Alignment procedures, Diagnostic tool usage (e.g., ISTA)
Depth:
Comprehensive from basic maintenance to complete engine and transmission rebuilds, including detailed diagnostic strategies and electrical schematics.
Engine Variants:
N52B30 (3.0L Inline-6), N62B40 (4.0L V8), N62B44 (4.4L V8), N62B48 (4.8L V8), M62TU (older variants may appear in early 2005 models), potentially N73B60 (6.0L V12 for top trims like 760i/Li), and hydrogen variant (H7)
Horsepower Torque Range:
Ranges from approximately 255 hp to over 438 hp depending on engine variant. Torque figures also vary significantly.
Fuel Delivery:
Electronic Fuel Injection (EFI), often with Valvetronic and Double VANOS variable valve timing.
ECU Type:
Bosch Motronic or Siemens DME (Digital Motor Electronics) variants specific to engine.
Type:
Typically 6-speed automatic transmission (e.g., ZF 6HP19, 6HP26).
Type:
Some early models or specific markets might have different automatic variants or a manual option (though rare for this generation).
Control Modes:
Steptronic (manual shifting mode), Sport mode, Comfort mode, Adaptive transmission control.
Transmission Fluid:
Refer to specific ZF fluid specifications (e.g., ZF Lifeguard Fluid 6) or BMW ATF specifications. Critical to use the correct fluid type.
Wheelbase:
E65: approx. 119.7 inches (3040 mm); E66: approx. 124.6 inches (3165 mm)
Length:
Varies by E65/E66 designation. E65: approx. 199.7 inches (5074 mm); E66: approx. 204.6 inches (5198 mm)
Curb Weight:
Ranges from approximately 4,000 lbs to over 4,500 lbs depending on engine and features.
Wheelbase:
Typical wheel sizes range from 17 to 19 inches. Tire sizes vary accordingly (e.g., 245/50R18, 245/40R19).
Bolt Pattern:
Commonly 5x120 mm.
NHTSA Crash Test Results:
Specific ratings for 2005 models should be consulted via NHTSA archives. Typically performed well in its class.
Stability Control:
Dynamic Stability Control (DSC), Traction Control System (TCS), Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD), Cornering Brake Control (CBC).
Driver Assistance:
Optional: Adaptive Cruise Control (ACC), Parking Assist (PDC - Park Distance Control), Head-Up Display (HUD).
Airbags:
Front airbags, Side airbags, Head protection system (curtain airbags), Optional knee airbags.
Seatbelts:
Front seatbelt pretensioners and force limiters, rear seatbelt reminders.
System:
iDrive infotainment system with Central Control Display (CCC - Car Communication Computer), often featuring navigation, radio, CD player, and Bluetooth connectivity. Later models might have the updated CIC (Car Communication Computer).
Active Steering:
Optional Active Steering system which varies steering ratio based on speed.
Telematics:
BMW Assist with TeleService and Emergency Call functionality (subscription-based).
Climate Control:
Automatic multi-zone climate control, often with active carbon filters and residual heat utilization.
Headlights:
Standard Xenon headlights with automatic leveling and adaptive cornering function (AFS) on many models.
Oil Change Interval:
Typically based on Condition Based Service (CBS) system, often around 10,000-15,000 miles or 12-24 months, but critical to follow CBS recommendations or manual guidelines.
Major Service Points:
Spark plugs, transmission fluid and filter, coolant, brake fluid, differential fluid are typically scheduled at specific mileage or time intervals (e.g., 60,000 miles).
Engine Oil:
BMW Longlife-01 (LL-01) or BMW Longlife-04 (LL-04) depending on market and engine. Viscosity typically 0W-30, 5W-30, or 5W-40.
Coolant:
BMW Blue or Blue/Purple antifreeze (G48) mixed with distilled water, typically a 50/50 ratio.
Brake Fluid:
DOT 4 LV (Low Viscosity) or DOT 5.1 (if specified for DSC systems).
Common Problems:
Coolant expansion tank leaks, valve cover gasket leaks, oil pan gasket leaks, oil separator (PCV) issues, VANOS solenoids/seals, ABS/DSC module failure, power steering leaks, E65/E66 specific electronic module failures (e.g., CCC/CIC, DME), suspension component wear (e.g., control arms, air springs on some models).
Maintenance Tips:
Regularly check for fluid leaks, monitor oil consumption, ensure proper functioning of climate control, and be diligent with electronic system updates/diagnostics.
Legacy:
BMW has a long history of producing luxury, performance-oriented vehicles, known for engineering excellence and driver engagement.
Generation Context:
The E65/E66 generation represented a significant departure in styling and technology from its predecessor (E38), introducing features like iDrive, Active Steering, and advanced suspension systems. It was a pivotal model in BMW's luxury segment.
Production Years:
E65/E66 generation: 2001-2008 (facelift in 2005).
Manufacturing Locations:
Primary manufacturing plant in Dingolfing, Germany.
