Engine:
V12 Bi-Turbo (M275), engine management, fuel delivery, ignition, cooling, lubrication, emission control, turbocharging systems.
Transmission:
5-speed Automatic Transmission (722.6), control module, torque converter, gear shifting, fluid service, diagnostics.
Drivetrain:
Rear-wheel drive, driveshaft, differential, axles, wheel bearings.
Suspension:
Active Body Control (ABC) suspension system, hydraulic actuators, control unit, fluid service, leveling, diagnostics.
Brakes:
Hydraulic braking system, ABS, ESP, SBC (Sensotronic Brake Control) in some variants, brake pad/rotor replacement, fluid bleeding, diagnostics.
Steering:
Hydraulic power steering, steering column, steering gear, power steering fluid.
Electrical:
12V electrical system, battery, alternator, starter, lighting systems, fuses, relays, wiring diagrams, control modules (ECU, TCU, ABC Control, etc.), CAN bus communication.
Climate Control:
Automatic climate control, HVAC system, refrigerant, compressor, blower motor, temperature sensors, actuators.
Infotainment Comfort:
COMAND (Cockpit Management and Navigation) system, audio system, navigation, telematics, seat controls, door locks, windows, sunroof.
Body Exterior:
Body panels, doors, hood, trunk, bumpers, exterior trim, glass, mirrors, wipers.
Body Interior:
Interior trim, dashboard, seats, airbags, seatbelts, headliner, carpeting.
Maintenance:
Scheduled maintenance intervals, oil changes, filter replacements (oil, air, cabin, fuel), spark plug replacement, fluid checks and top-offs.
Diagnostics:
Troubleshooting guides, fault code interpretation (DTCs), diagnostic procedures for all major systems, using OBD-II scanners and Mercedes-specific diagnostic tools (e.g., Star Diagnosis).
Repair:
Step-by-step repair instructions for engine components, transmission, suspension, brakes, steering, electrical systems, bodywork, and interior components.
Overhaul:
Engine and transmission overhaul procedures, component rebuild instructions.
Calibration Adjustment:
Suspension leveling calibration, steering angle sensor calibration, ABS/ESP system calibration, idle speed adjustment.
Component Replacement:
Detailed instructions for replacing common wear items and major components such as alternators, starters, fuel pumps, ignition coils, catalytic converters, water pumps, radiators, suspension arms, brake calipers, and more.
Wiring Diagrams:
Comprehensive electrical wiring diagrams for all vehicle systems, including power distribution, signal routing, and connector pinouts.
Depth:
Detailed, in-depth technical information suitable for professional technicians and advanced DIY mechanics. Covers everything from basic maintenance to complex diagnostics and component-level repairs.
NHTSA Front Impact:
5-Star (likely for driver and passenger, specific ratings may vary)
IIHS Side Impact:
Good (likely for the era, specific ratings may vary)
ABS:
Anti-lock Braking System (ABS) standard.
Esp:
Electronic Stability Program (ESP) standard.
Sbc:
Sensotronic Brake Control (SBC) may be present, requiring specific diagnostic procedures. (Note: SBC was phased out in later W220 models).
Airbags:
Front dual-stage airbags, front side airbags, curtain airbags (front and rear), optional rear side airbags.
Seatbelts:
3-point inertia-reel seatbelts with pretensioners and force limiters.
Head Restraints:
Active Head Restraints (Neck-Pro) for front seats.
Oil Change Interval:
Flexible service interval system (ASSYST), typically 10,000-15,000 miles or 12 months, depending on driving conditions and oil life monitoring. Refer to ASSYST indicators.
Transmission Service Interval:
Recommended every 40,000-60,000 miles for the 722.6 transmission fluid and filter change. Crucial for longevity of this complex unit.
Abc Fluid Service:
ABC system fluid flush and filter replacement recommended every 40,000-60,000 miles. Crucial for preventing system damage.
Spark Plugs:
Long-life spark plugs, typically recommended for replacement around 100,000 miles, but inspection is advised per ASSYST. Uses specialized iridium spark plugs.
Coolant Capacity:
Approximately 12.5 Liters (13.2 US quarts).
Brake Fluid Type:
DOT 4 Plus (MB-Approval 331.0)
Ignition Coils:
V12 engines are known to be sensitive to ignition coil failures, leading to misfires and rough running. Regular inspection and potential replacement are recommended.
Abc Suspension Leaks:
ABC system can be prone to leaks from hoses, accumulators, or struts, requiring specialized diagnosis and repair. Fluid contamination is a common cause of failure.
Sbc Brake System:
The SBC system can develop faults (e.g., pump failure, sensor issues) requiring specialized diagnostic tools and replacement. It has a service life counter that may trigger replacement.
Crankshaft Position Sensor:
Failures can lead to no-start conditions or stalling. Location and replacement procedures are detailed in the manual.
Transmission Conductor Plate:
The conductor plate within the 722.6 transmission can fail, causing shifting problems or loss of gear engagement. Requires transmission removal for replacement.