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2004 MERCEDES-BENZ G55 CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT MERCEDES-BENZ REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Cabin Air Filter Locations & Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service

A/C & HEATER SERVICE PROCEDURES FOR 2004 MERCEDES-BENZ G55 AUTOMOBILES
Mercedes-Benz -> Component Replacement & Adjustment -> Outside Air Temperature Sensor, Replace -> ML55 AMG, ML350 & ML500 -> SL55 AMG, SL500 & SL600
Vehicle: 2004 MERCEDES-BENZ G55 AMG 5.5 V8 GAS
ML55 AMG, ML350 & ML500
- Drain coolant into suitable container.
- Disconnect coolant expansion reservoir and place aside.
- Recover refrigerant as outlined under .
- Remove cover and expansion valve mounting nut.
- Disconnect expansion valve lines. Plug or cap lines and openings.
- Remove wiper system.
- Remove instrument panel mounting nuts.
- Remove A-pillar paneling.
- Remove driver's side lower instrument panel mounting nuts.
- Remove footwell righthand paneling.
- Remove A-pillars rubber covering and instrum...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2004 MERCEDES-BENZ G55 AUTOMOBILES
Mercedes-Benz -> Fuel Filter Replacement -> Except 2003-06 E320 & E500 Sedans Less 4 Matic & 2004-06 E Series w/Gasoline Engines -> Fuel System Pressure Relief -> Removal & Installation
Vehicle: 2004 MERCEDES-BENZ G55 AMG 5.5 V8 GAS
Fuel System Pressure Relief
Do not smoke or allow an open flame of any type when working on or near any fuel system related components. The highly flammable vapor mixtures may ignite, resulting in serious personal injury.
Prior to disconnecting fuel lines, the fuel system pressure must be relieved to prevent accidental fuel spray.
After the battery has been disconnected and reconnected, some abnormal driveability symptoms may occur. The vehicle may need to be driven while it relearns its adaptive strategy.
- Ensure t...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2004 MERCEDES-BENZ G55 AUTOMOBILES
CV AXLE SHAFT, Replace -> Front -> Rear
Vehicle: 2004 MERCEDES-BENZ G55 AMG 5.5 V8 GAS
Front
- Raise and support vehicle.
- Deactivate SBC brake system using STAR DIAGNOSIS.
- Empty rear air springs using STAR DIAGNOSIS.
- Remove front wheels.
- Remove collar nut from front axle shaft.
- Remove lower engine cover shields.
- Disconnect electrical lines from brackets at front wheel and on strut assembly.
- Remove brake hose from brake hose bracket, cut cable ties if required.
- Remove tie rod from steering knuckle.
- Remove nut from upper transverse rod and remove transverse rod from steering knuckle.
- Remove front axle shaft from front axle flange, using suitable removal tool.
- Swivel steeri...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2004 MERCEDES-BENZ G55 AUTOMOBILES
Alternator, Replace
Vehicle: 2004 MERCEDES-BENZ G55 AMG 5.5 V8 GAS
- Remove drive belt.
- Remove protective cover, as required, and disconnect electrical connectors.
- Remove ...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2004 MERCEDES-BENZ G55 AUTOMOBILES
Cabin Air Filter Service -> Mercedes-Benz -> 2002-09 G Class
Vehicle: 2004 MERCEDES-BENZ G55 AMG 5.5 V8 GAS
On models except AMG, under normal operating conditions the cabin air filter should be replaced every 24 months or 26,000 miles. In dusty areas change the cabin air filter more often.
On AMG models, under normal operating conditions the cabin air filter should be replaced every 24 months or 30,000 miles. In dusty areas change the cabin air fi...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2004 MERCEDES-BENZ G55 AUTOMOBILES
Mercedes-Benz -> Air Bag Off Lamp ->
Vehicle: 2004 MERCEDES-BENZ G55 AMG 5.5 V8 GAS
The Air Bag Off should illuminate for 6 seconds when the ignition switch is placed in the On position. The lamp will illuminate when the specified child safety seat has been properly installed on the passenger front seat, indicating that the front passenger ...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2004 MERCEDES-BENZ G55 AUTOMOBILES
Radiator, Replace
Vehicle: 2004 MERCEDES-BENZ G55 AMG 5.5 V8 GAS
Risk of explosion from explosive gas. Risk of poisoning and caustic burns from swallowing battery electrolyte. Risk of injury through burns to skin and eyes from battery acid or when handling damaged lead-acid batteries. No fire, sparks, naked flames or smoking. Wear protective gloves, acid-resistant clothing and safety glasses. Pour battery electrolyte only into suitable and appropriately marked containers. Lethal injuries are possible if vehicle slips off of lifting platform Align vehicle between columns of hydraulic hoist and position four support plates below hoist support...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2004 MERCEDES-BENZ G55 AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2004 MERCEDES-BENZ G55 AMG 5.5 V8 GAS
- Remove fan and shroud.
- Disconnect electrical connector at engine and air conditioning fan.
- Remove retaining pin on right and left side.
- Press together retainer clamp of radiator on right and left and release radiator bridge.
- Press clamps on right ...
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COMPONENT LOCATION DIAGRAMS FOR 2004 MERCEDES-BENZ G55 AUTOMOBILES
Component location diagrams for most 2004 MERCEDES-BENZ G55 cars and light trucks sold in the U.S. from 1990+.
![]() Components on diagram: |
![]() Components on diagram: |
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WIRING DIAGRAMS FOR 2004 MERCEDES-BENZ G55 AUTOMOBILES
OEM drawn wiring diagrams for most 2004 MERCEDES-BENZ G55 cars and light trucks sold in the U.S.
![]() Components on diagram: |
![]() Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2004 MERCEDES-BENZ G55 AUTOMOBILES
OEM TSB listings for most 2004 MERCEDES-BENZ G55 cars and light trucks sold in the U.S. from 1985+.
Document: Re-code the Software Calibration Number (SCN) Vehicle: 2004 MERCEDES-BENZ G55 AMG 5.5 V8 GAS Auto Systems: |
Document: Maintenance Systems Overview Vehicle: 2004 MERCEDES-BENZ G55 AMG 5.5 V8 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2004 MERCEDES-BENZ G55 AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2004 MERCEDES-BENZ G55 cars and light trucks sold in the U.S. and Canada from 1970+.
- Brake caliper mounting bolt torque
- Brake drum runout, machining, & discard specs
- Minimum brake lining thickness.
- Brake rotor runout, parallelism, machining, discard, & finish specs
A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 2004 MERCEDES-BENZ G55 cars and light trucks sold in the U.S. and Canada from 1980+.
- Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap
COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.
PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules
QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 2004 MERCEDES-BENZ G55 cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.
- Automatic transmission/transaxles capacities, lubricant recommendations
- Differential/final drive capacities, lube recommendations, grades, & viscosities
- Final drive fill & drain plug torques
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
- Severe service maintenance & interval recommendations
- Tire sizes, wheel nut/bolt torque, pressures & rim sizes
- Transfer case capacities, lube recommendations, grades, & viscosities
TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 2004 MERCEDES-BENZ G55 cars and light trucks sold in the U.S. and Canada from 1980+
- Airflow sensor electrical specifications
- Tensioning specifications for systems with automatic tensioners
- Barometric pressure sensor specs
- Battery group number and cranking performance
- Crankshaft & camshaft position sensor resistance
- Engine compression pressures
- Coolant temperature sensor specs
- Computer advance.
- Diesel fuel temperature sensor resistance.
- Distributor advance specifications
- Ignition pickup coil resistance
- Exhaust gas recirculation temperature sensor resistance
- Engine fastener torque values
- Firing order diagrams
- Fuel system pressures
- Generator (alternator) specs
- Intake air temperature sensor specs
- Ignition coil specifications
- Fuel injector resistance
- Engine idle speeds
- Knock sensor resistance
- Manifold absolute pressure sensor specs
- Mixture control solenoid resistance
- Voltage regulator specs
- Spark plug applications & gaps
- Starter motor electrical specs.
- Tensioning specifications for systems without automatic tensioners
- Throttle body temperature sensor resistance
- Ignition timing in degrees at rpm
- Transmission oil temperature sensor resistance
- Throttle position sensor specs
- Vacuum sensor valve specs
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