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1994 MERCEDES-BENZ S320 CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT MERCEDES-BENZ REPAIR SHOPS DON'T WANT YOU TO KNOW
Learn how to repair a car or truck, install or remove parts, wire an engine, reset warning lights, replace fuel filter, fix auto body and more. Get Automotix DIY!Select Section
- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Brake 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 1994 MERCEDES-BENZ S320 AUTOMOBILES
Mercedes-Benz -> Component Replacement & Adjustment -> HEATER CORE, REPLACE -> 124, 129 & 140 SERIES -> 201 SERIES -> 202 SERIES
Vehicle: 1994 MERCEDES-BENZ S320 3.2 L6 GAS
124, 129 & 140 SERIES
- Remove both front floor mats.
- Remove switches or cover plates from both sides of center console cover to provide access to cover attaching screws.
- Remove center console cover attaching screws and the cover.
- Remove gearshift lever cover, then the radio assembly.
- Pull off control knobs from heater and blower controls and vent lever.
- Remove retaining nuts from control shafts.
- Remove cover plate from center console.
- Remove center console attaching bolts and the console.
- Remove both right and left in...
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BRAKE SERVICE PROCEDURES FOR 1994 MERCEDES-BENZ S320 AUTOMOBILES
Disc Brakes -> Parking Brake Service -> Adjustment -> E300, E320, E420, E500, 190E, 300CE, D, E & TE
Vehicle: 1994 MERCEDES-BENZ S320 3.2 L6 GAS
Adjustment
E300, E320, E420, E500, 190E, 300CE, D, E & TE
- Loosen adjusting screw, ensure expanding locks are not preloaded, if so equipped.
- Loosen each left and right collar bolt at rear axle.
- Raise and support vehicle.
- Turn wheel until bolt hole from which collar bolt was removed is about 45° i...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1994 MERCEDES-BENZ S320 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: 1994 MERCEDES-BENZ S320 3.2 L6 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 1994 MERCEDES-BENZ S320 AUTOMOBILES
DRIVESHAFT, Replace
Vehicle: 1994 MERCEDES-BENZ S320 3.2 L6 GAS
- Raise vehicle and support.
- Unscrew exhaust shielding plate.
- On models with 4MATIC, unscrew exhaust shielding plate.
- Lift transmission and support.
- Unscrew cross bridge.
- Unscrew hex, head screws and hex nut and remove rear engine carrier with engine mount.
- On all models, loosen propeller shaft clamping nut for approx. two turns without sliding back rubber sleeve (sliding along).
- Remove front propeller shaft from transmission. Flexible coupling remains on propeller shaft.
- Remove front propeller shaft from transfer case.
- Prior to sliding back propeller shaft, loosen vulcanized fitted ...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1994 MERCEDES-BENZ S320 AUTOMOBILES
Starter, Replace
Vehicle: 1994 MERCEDES-BENZ S320 3.2 L6 GAS
- Disconnect battery ground cable.
- Remove air cleaner assembly.
- Remove starter electrical harness bracket to transmission attaching bolts, then remove.
- Remove engine compartment enclosure attaching screws, then remove.
- Dis...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 1994 MERCEDES-BENZ S320 AUTOMOBILES
Cabin Air Filter Service -> Mercedes-Benz -> 1994-99 S Class
Vehicle: 1994 MERCEDES-BENZ S320 3.2 L6 GAS
Under normal operating conditions the cabin air filter should be replaced every 15,000 miles. In dusty areas change the cabin air filter more often.
- Open the hood.
- Pull the up cowl seal.
- Disconnect the vacuum hoses from the main air flap actuators.
- Lift up the air plenum housing.
- Turn the windshield heating thermal valve counterclockwise to disengage.
- Lift the outside temperature sensor upward and pos...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1994 MERCEDES-BENZ S320 AUTOMOBILES
Mercedes-Benz -> Check Engine Lamp ->
Vehicle: 1994 MERCEDES-BENZ S320 3.2 L6 GAS
The Check Engine lamp should illuminate when the ignition switch is placed in the On position to indicate the lamp is operational. After the engine has been started, the warning lamp should go off. If warning lamp comes on while th...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1994 MERCEDES-BENZ S320 AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 1994 MERCEDES-BENZ S320 3.2 L6 GAS
Lower
- Drain coolant into a suitable container.
- Reposition clamp at radiator and remove hose.
- Reposition clamp at water pump and remove hose.
- Remove hose from vehicle.
- Reverse procedure to i...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1994 MERCEDES-BENZ S320 AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1994 MERCEDES-BENZ S320 3.2 L6 GAS
- Remove viscous fan clutch.
- Swivel tensioning pulley clockw...
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COMPONENT LOCATION DIAGRAMS FOR 1994 MERCEDES-BENZ S320 AUTOMOBILES
Component location diagrams for most 1994 MERCEDES-BENZ S320 cars and light trucks sold in the U.S. from 1990+.
Door & Trunk Connectors Diagram for 1994 MERCEDES-BENZ S320 3.2 L6 GAS Components on diagram: |
I/P & Luggage Compartment Grounds Diagram for 1994 MERCEDES-BENZ S320 3.2 L6 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 1994 MERCEDES-BENZ S320 AUTOMOBILES
OEM drawn wiring diagrams for most 1994 MERCEDES-BENZ S320 cars and light trucks sold in the U.S.
1994 MERCEDES-BENZ S320 3.2 L6 GAS Wiring Diagram Components on diagram: |
1994 MERCEDES-BENZ S320 3.2 L6 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1994 MERCEDES-BENZ S320 AUTOMOBILES
OEM TSB listings for most 1994 MERCEDES-BENZ S320 cars and light trucks sold in the U.S. from 1985+.
Document: Introduction of Improved Single-Component Windshield/Window Bonding System Vehicle: 1994 MERCEDES-BENZ S320 3.2 L6 GAS Auto Systems: |
Document: Headlamp Color and/or Brightness Difference When Changing Xenon Bulb Vehicle: 1994 MERCEDES-BENZ S320 3.2 L6 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1994 MERCEDES-BENZ S320 AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1994 MERCEDES-BENZ S320 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 1994 MERCEDES-BENZ S320 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 1994 MERCEDES-BENZ S320 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 1994 MERCEDES-BENZ S320 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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