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1994 MERCEDES-BENZ E420 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
Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1994 MERCEDES-BENZ E420 car and truck
repair procedures including MERCEDES-BENZ engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work
guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up &
drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install
procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c
system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix
your MERCEDES-BENZ E420 automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 1994 MERCEDES-BENZ E420 AUTOMOBILES
Mercedes-Benz -> Component Replacement & Adjustment -> RECEIVER/DRIER, REPLACE -> 201 SERIES
Vehicle: 1994 MERCEDES-BENZ E420 4.2 V8 GAS
201 SERIES
- Recover refrigerant from A/C system.
- Disconnect plugs from pressure switches.
- Remove both pressure switches from receiver-drier.
- Disconnect and plug receiver-drier A/C lines.
- Remove two mounting screws, then the...
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BRAKE SERVICE PROCEDURES FOR 1994 MERCEDES-BENZ E420 AUTOMOBILES
Disc Brakes -> Brake Pad Service -> Fixed Caliper -> Floating Caliper -> Front -> Rear
Vehicle: 1994 MERCEDES-BENZ E420 4.2 V8 GAS
Floating Caliper
Front
- Remove cable for contact sensor from connector on floating caliper.
- Remove top or bottom bolt (depending on vehicle model and location of brake hoses) and remove counter-hold sliding pin.
- Swing cylinder housing away from rotor.
- Remove pads from brake carrier. Replace brake pads when lining thickness is less than .08 inch or if oily or greasy.
- Clean brake carrier contact surfaces.
- Remove contact sensor from lining backplate on inside brake pad.
- Check dust boots and dust cap, replace if necessary.
- Force piston back with resetting special tool No. 000589524300, or e...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1994 MERCEDES-BENZ E420 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 E420 4.2 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 1994 MERCEDES-BENZ E420 AUTOMOBILES
DRIVESHAFT, Replace
Vehicle: 1994 MERCEDES-BENZ E420 4.2 V8 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 E420 AUTOMOBILES
Starter, Replace
Vehicle: 1994 MERCEDES-BENZ E420 4.2 V8 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 E420 AUTOMOBILES
Cabin Air Filter Service -> Mercedes-Benz -> 1992-93 300CE, 300D, 300E, 300SD, 300TE, 400E, 500E, 1994 E320, E420 & E500
Vehicle: 1994 MERCEDES-BENZ E420 4.2 V8 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.
- Pull the cowl seal off up to the righthand windshield wiper.
- Remove the cowl lip seals.
- Detach the two upper center cover retaining clips, then the cover.
- Remove two screws securing the lefthand water drain cover, then disengage clip and remove cover, Fig. .
- Remove the lefthand air inlet retaining screws, then lift the air inlet upward to remove, Fig. .
- Remove the righthand air i...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1994 MERCEDES-BENZ E420 AUTOMOBILES
Mercedes-Benz -> Brake Pad Wear Indicator Lamp ->
Vehicle: 1994 MERCEDES-BENZ E420 4.2 V8 GAS
The Brake Pad Wear indicator lamp should illuminate when the ignition switch is placed in the On position to indicate the warning lamp is operational. After the engine has been started, the warnin...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1994 MERCEDES-BENZ E420 AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 1994 MERCEDES-BENZ E420 4.2 V8 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 E420 AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1994 MERCEDES-BENZ E420 4.2 V8 GAS
- Remove fan shroud ring and place over fan.
- On first versions, proceed as follows:
- Loosen adjusting bolt 1/4-1/2 turn.
- Loosen tensioning nut (turn to left).
- Remove belt.
- Inspect pulley surfaces and replace as required.
- Set pointer at marking 1.
- Install belt starting at tensioning pulley.
- Tighten tensioning nut until setting pointer ...
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COMPONENT LOCATION DIAGRAMS FOR 1994 MERCEDES-BENZ E420 AUTOMOBILES
Component location diagrams for most 1994 MERCEDES-BENZ E420 cars and light trucks sold in the U.S. from 1990+.
 Anti-Lock Brake System Components Diagram for 1994 MERCEDES-BENZ E420 4.2 V8 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 1994 MERCEDES-BENZ E420 AUTOMOBILES
OEM drawn wiring diagrams for most 1994 MERCEDES-BENZ E420 cars and light trucks sold in the U.S.
 1994 MERCEDES-BENZ E420 4.2 V8 GAS Wiring DiagramComponents on diagram: |
 1994 MERCEDES-BENZ E420 4.2 V8 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1994 MERCEDES-BENZ E420 AUTOMOBILES
OEM TSB listings for most 1994 MERCEDES-BENZ E420 cars and light trucks sold in the U.S. from 1985+.
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Document: Introduction of Improved Single-Component Windshield/Window Bonding System Vehicle: 1994 MERCEDES-BENZ E420 4.2 V8 GAS Auto Systems: |
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Document: Headlamp Color and/or Brightness Difference When Changing Xenon Bulb Vehicle: 1994 MERCEDES-BENZ E420 4.2 V8 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1994 MERCEDES-BENZ E420 AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1994 MERCEDES-BENZ E420 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 E420 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 E420 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 E420 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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