Engine:
Detailed diagnostics, repair procedures, component replacement, timing, emissions, cooling, lubrication for the M113.971 V8 engine.
Transmission:
Service, repair, and diagnostics for the 5G-TRONIC (722.6) automatic transmission, including fluid changes, valve body diagnostics, and electronic control unit (ECU) communication.
Drivetrain:
Front and rear axle service, differential repairs, driveshaft maintenance, CV joints, and 4MATIC all-wheel-drive system components.
Suspension:
Front and rear suspension systems, including coil springs, shock absorbers, control arms, ball joints, bushings, and wheel alignment specifications.
Brakes:
Brake system diagnostics, repair, ABS/ESP system service, component replacement (pads, rotors, calipers), brake fluid service, and bleeding procedures.
Steering:
Power steering system service, pump replacement, steering rack repair, and tie rod end replacement.
Electrical:
Complete electrical system schematics, wiring diagrams, diagnostic procedures for all ECUs (ME, TC/ISC, ABS/ESP, SRS, etc.), lighting, power accessories, and charging system.
HVAC:
Heating, ventilation, and air conditioning (HVAC) system service, refrigerant handling, component diagnostics, climate control unit troubleshooting.
Body:
Body panel removal and installation, interior trim service, door mechanisms, power liftgate, sunroof, and exterior trim components.
Safety Restraint:
Supplemental Restraint System (SRS) diagnostics, airbag module replacement, seatbelt service, and occupant sensor calibration.
Maintenance:
Oil changes, filter replacements, spark plug replacement, coolant flushes, brake fluid changes, differential fluid changes, and air filter replacement.
Troubleshooting:
Diagnostic trouble codes (DTCs) interpretation, fault finding procedures for all major systems, intermittent issue resolution, and electrical system troubleshooting guides.
Repair:
Engine mechanical repair, transmission overhauls, brake component replacement, suspension overhaul, electrical component repair, and bodywork procedures.
Diagnostics:
Detailed diagnostic flowcharts, specific tool requirements (e.g., STAR Diagnosis system), ECU programming, and module testing.
Depth:
Comprehensive, covering from basic fluid checks to full engine and transmission rebuilds. Includes detailed schematics and diagnostic procedures.
NHTSA Frontal Crash Driver:
Not rated (Vehicle predates full NHTSA testing of this type)
NHTSA Frontal Crash Passenger:
Not rated (Vehicle predates full NHTSA testing of this type)
IIHS Moderate Overlap Frontal Offset:
Good (for its era)
Electronic Stability Program:
Standard (ESP)
Anti Lock Braking System:
Standard (ABS)
All Wheel Drive:
Standard (4MATIC)
Airbags:
Front airbags, front side airbags (optional)
Seatbelts:
3-point inertia-reel seatbelts with pretensioners and force limiters
Engine Oil And Filter:
Every 10,000 miles or 12 months, whichever comes first (using synthetic oil).
Transmission Fluid Service:
Typically every 60,000-100,000 miles, consult manual for specific interval based on driving conditions.
Engine Air Filter:
Every 30,000 miles or as needed based on conditions.
Spark Plugs:
Platinum or Iridium spark plugs recommended replacement at 100,000 miles.
Engine Oil Type:
SAE 0W-40 or 5W-40 Synthetic (MB Spec 229.3 or 229.5)
Engine Oil Capacity:
8.5 US quarts (8.0 liters) with filter change
Brake Fluid Type:
DOT 4 Plus (MB Spec 331.0)
Common Wear Items:
PCV valve issues leading to oil leaks, mass air flow (MAF) sensor cleaning/replacement, O2 sensors, control arm bushings, sway bar links, and rear main crankshaft seal leaks.
Electrical Quirks:
Window regulator failures, climate control module issues, and occasional ABS/ESP sensor faults.
