Powertrain:
Detailed coverage of M113 V8 engine, 722.6 5-speed automatic transmission.
Chassis:
Front/Rear Suspension (ABC - Active Body Control, AIRMATIC DC - Air Suspension), Steering System, Brake System (including SBC - Sensotronic Brake Control).
Electrical:
Complete wiring diagrams, fuse locations, diagnostic procedures for all electronic modules, COMAND APS, Tele Aid, CAN bus communication.
Body And Interior:
Body panel removal/installation, door mechanisms, seat adjustment, HVAC system components, dashboard and console disassembly, sound insulation.
Maintenance:
Scheduled maintenance, fluid changes (engine oil, coolant, transmission fluid, brake fluid, power steering fluid), filter replacements, lubrication.
Diagnostics:
Troubleshooting flowcharts, diagnostic trouble codes (DTCs), component testing, use of STAR DIAGNOSIS equipment.
Repair:
Step-by-step repair instructions for engine, transmission, suspension, brakes, electrical components, body panels, interior trim.
Engine Repair:
Timing chain/belt replacement (if applicable, though M113 is OHC chain-driven), head gasket replacement, seal replacements, component removal/installation.
Transmission Repair:
Complete transmission overhaul, torque converter replacement, valve body repair/replacement, solenoid replacement.
Suspension Repair:
Component replacement, alignment specifications, ABC system bleeding and fault diagnosis, AIRMATIC component replacement.
Brake Repair:
Pad/rotor replacement, caliper service, SBC system diagnosis and bleeding, brake fluid flush.
Electrical Diagnostics:
Wiring diagram interpretation, component testing using multimeter, oscilloscope, and diagnostic tools, troubleshooting complex electrical faults.
Body Repair:
Panel alignment, dent repair, rust prevention, bumper replacement, lighting component replacement.
Depth:
Comprehensive, including full rebuild procedures, torque specifications, special tool requirements, electrical schematics, component specifications.
Torque Specs:
Detailed torque specifications for all critical fasteners (engine, transmission, suspension, brakes, chassis).
Special Tools:
Identification and use of specialized Mercedes-Benz tools required for specific repair procedures.
Diagnostic Trouble Codes:
Extensive listing and explanation of Mercedes-Benz specific Diagnostic Trouble Codes (DTCs) and their potential causes.
Engine Components:
Engine assembly, cylinder head, crankshaft, pistons, connecting rods, camshafts, valve train, oil pump, water pump, intake/exhaust manifolds, fuel injectors, ignition coils.
Transmission Components:
Transmission assembly, torque converter, valve body, clutches, bands, planetary gear sets, electronic control unit (TCU).
Suspension Components:
Struts, shock absorbers, control arms, ball joints, sway bars, bushings, ABC hydraulic actuators, pumps, accumulators, AIRMATIC air springs, compressors, valves.
Brake Components:
Brake pads, rotors, calipers, brake lines, master cylinder, SBC hydraulic unit, brake booster, parking brake system.
Electrical Components:
Alternator, starter, battery, fuse box, relay box, ECU, ABS/ESP module, SAM units (Signal Acquisition Modules), lighting system, power windows/locks/seats, instrument cluster, CAN bus modules.
Oil Change Interval:
Flexible Service System (FSS) indicates intervals, typically around 10,000 miles or 12 months, using synthetic oil.
Transmission Fluid Service:
As per FSS, typically every 30,000-40,000 miles for the 722.6 transmission (though some sources recommend earlier for longevity).
Engine Oil Spec:
MB 229.5 approved synthetic 0W-40 or 5W-40.
Transmission Fluid Spec:
MB 236.10 or MB 236.12 (e.g., Pentosin ATF 1, Mobil ATF 134).
Coolant Spec:
MB 325.0 (HSA 1000) or MB 326.0 (concentrate) - Blue ethylene glycol based.
Brake Fluid Spec:
DOT 4 Plus (MB 331.0).
Power Steering Fluid Spec:
MB 343.0 (or CHF 11S specification fluid).
Common Problems 2004 E500:
SBC system failures (requiring replacement or repair), ABC hydraulic leaks/failures, EIS (Electronic Ignition Switch) issues, oil cooler leaks, MAF sensor failures.
Air Suspension Issues:
Leaking air springs, failing air compressor, faulty ride height sensors, ABC pump failures causing a stiff ride or leaks.