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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!

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Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about MERCEDES-BENZ S320 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 S320 automobile. Try the Automotix DIY solution today!
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Using the Automotix DIY repair procedures will save you hundreds and even thousands of dollars! In addition, it will save you hours of touring the city searching for MERCEDES-BENZ mechanics you can trust. The Automotix DIY solution is particularly affordable. A full access to the entire DIY repair procedures and diagrams for your MERCEDES-BENZ S320 vehicle will cost less than a single gallon of gas. Here are some of the DIY repair tips and procedures you will find here:

A/C & HEATER SERVICE PROCEDURES FOR MERCEDES-BENZ S320 AUTOMOBILES

Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported MERCEDES-BENZ S320 cars and light trucks from 1990+

Mercedes-Benz -> Automatic Temperature Control Systems -> Diagnosis & Testing -> 16-pin Data Link Connector (DLC) -> 38-pin Data Link Connector (DLC) -> Accessing Diagnostic Trouble Codes -> Actual Values -> C43, C230 & C280 -> C43, C230, C280, E55, E300, E320 & E430 -> CL600, S320, S420 & S600 & 1998-99 CL500 & S500 -> Clearing Diagnostic Trouble Codes -> Component Diagnosis & Testing -> Diagnostic Test -> Diagnostic Trouble Code Interpretation -> Diagnostic Trouble Code Memory -> E55, E300, E320 & E430 -> Electrical Test -> Electrical Tests -> Evaporator & Outside Temperature Sensors -> Function Tests -> Heat Exchanger & Interior Air Temperature Sensors -> Individual Flap Test -> SL500 & SL600 -> Test A -> Test B -> Test C -> Using Hand-Held Tester -> Using Impulse Counter Scan Tool -> Using Temperature Display Window -> Vacuum Tests
Vehicle: 1998 MERCEDES-BENZ S320 3.2 L6 GAS

Refer to Figs. through for explanations of symbols, connections and steps included in charts.

Accessing Diagnostic Trouble Codes

Using Impulse Counter Scan Tool
16-Pin Data Link Connector (DLC)
  • Connect impulse counter scan tool No. 124-589-19-21-00, or equivalent, ground circuit 31 black wire to socket No. 1, Fig. .
  • Connect ignition circuit 15 red wire to socket No. 16.
  • Connect yellow wire to diagnostic output socket of system being tested, Fig. .
  • LED "U-Bat" must light. If LED does not light, check voltage supply and to...

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BRAKE SERVICE PROCEDURES FOR MERCEDES-BENZ S320 AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported MERCEDES-BENZ S320 cars and light trucks from 1990+.

Hydraulic Brake Systems -> Component Replacement -> Master Cylinder
Vehicle: 1998 MERCEDES-BENZ S320 3.2 L6 GAS

Master Cylinder
  • Remove brake fluid from reservoir.
  • Disconnect bolt and remove reservoir from tandem master brake cylinder.
  • Disconnect brake lines.
  • On S430 and 2000 CL500, CL600, S500 and S600 models,...

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FUEL FILTER REPLACEMENT PROCEDURES FOR MERCEDES-BENZ S320 AUTOMOBILES

Fuel filter replacement procedures with corresponding images for most domestic and imported MERCEDES-BENZ S320 cars and light trucks sold in the U.S. for 1980+.

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: 1997 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 MERCEDES-BENZ S320 AUTOMOBILES

Includes CV axle, universal joint, and driveline replacement, for domestic and imported MERCEDES-BENZ S320 cars and light trucks from 1990+.

DRIVESHAFT, Replace
Vehicle: 1999 MERCEDES-BENZ S320 3.2 L6 GAS

  • Raise and support vehicle.
  • Disconnect exhaust system and shields, Fig. .
  • Remove fuel pump cover.
  • Remove seat belt bracket mounting bolts.
  • Remove mounting bolts and driveshaft reinforcement bridge.
  • Remove clamping nut,
  • Loosen intermediate bearing mounting bolts.
  • Remove mounting bolts and nuts, then disconnect front driveshaft from transmission. Flexible disc remains on driveshaft.
  • Remove mounting bolts and nuts, then disconnect rear driveshaft from differential carrier. Flexible disc remains on driveshaft.
  • Loosen flexible discs fitted sleeves using suitable six-inch long, .3974-.4725 ...

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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR MERCEDES-BENZ S320 AUTOMOBILES

Includes starter and alternator replacement procedures for domestic and imported MERCEDES-BENZ S320 cars and light trucks from 1990+.

Alternator, Replace
Vehicle: 1999 MERCEDES-BENZ S320 3.2 L6 GAS

  • Remove drive belt.
  • Remove engine compartment panels.
  • Disconnect el...

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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR MERCEDES-BENZ S320 AUTOMOBILES

Cabin air filter locations and replacement procedures with corresponding images for most domestic and imported MERCEDES-BENZ S320 cars and light trucks sold in the U.S. as equipped to the current model year.

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 MERCEDES-BENZ S320 AUTOMOBILES

Maintenance lamp reset procedures with corresponding images for most domestic and imported MERCEDES-BENZ S320 cars and light trucks sold in the U.S. from 1990+.

Mercedes-Benz -> Brake Assist System (BAS)/Acceleration Slip Regulation (ASR) Or Brake Assist System (BAS)/Electronic Stability Program (ESP) Warning Lamp ->
Vehicle: 1999 MERCEDES-BENZ S320 3.2 L6 GAS

The Brake Assist System (BAS)/Acceleration Slip Regulation (ASR) or Brake Assist System (BAS)/Electronic Stability Program (ESP) warning lamp, will illuminate when the ignition switch is placed in the On position to indicate the warning lamp is operational. The lamp should go off when the engine is started. If the warning lamp remains on after the engine has been started or has come on while driving the vehicle, a fault in the BAS, ASR or ESP h...

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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR MERCEDES-BENZ S320 AUTOMOBILES

Includes radiator, cooling and heater hose replacement procedures for domestic and imported MERCEDES-BENZ S320 cars and light trucks from 1990+

Heater Hose, Replace -> Bypass -> Inlet -> Outlet
Vehicle: 1995 MERCEDES-BENZ S320 3.2 L6 GAS

Inlet

  • Drain coolant into a suitable container.
  • Reposition clamp on heat exchanger feed pipe and remove hose.
  • Reposition clamp on duo pulsed valve and remove hose.
  • Remove hose from vehicle.
  • Reverse procedure to install.

Outlet

  • Drain coolant into a suitable container.
  • Reposition clamp on heat exchanger return pipe an...

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SERPENTINE BELT SERVICE PROCEDURES FOR MERCEDES-BENZ S320 AUTOMOBILES

Serpentine belt replacement procedures with corresponding images for most domestic and imported MERCEDES-BENZ S320 cars and light trucks sold in the U.S. from 1990+.

Serpentine Drive Belt, Replace
Vehicle: 1998 MERCEDES-BENZ S320 3.2 L6 GAS

  • Remove viscous fan clutch.
  • Swivel tensioning pulley clockw...

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COMPONENT LOCATION DIAGRAMS FOR MERCEDES-BENZ S320 AUTOMOBILES

Component location diagrams for most MERCEDES-BENZ S320 cars and light trucks sold in the U.S. from 1990+.

 Diagram for 1996 MERCEDES-BENZ S320  3.2 L6 GAS Diagram for 1996 MERCEDES-BENZ S320 3.2 L6 GAS

Components on diagram:
  • Transmitter-Receiver
  • Oxygen Sensors Diagram for 1998 MERCEDES-BENZ S320  3.2 L6 GASOxygen Sensors Diagram for 1998 MERCEDES-BENZ S320 3.2 L6 GAS

    Components on diagram:
  • Left Hand Oxygen Sensor No.1
  • Left Hand Oxygen Sensor No.2
  • Right Hand Oxygen Sensor No.1
  • Right Hand Oxygen Sensor No.2
  • Connector G-3/3
  • CLICK HERE TO GET FULL ACCESS TO MERCEDES-BENZ S320 PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR MERCEDES-BENZ S320 AUTOMOBILES

    OEM drawn wiring diagrams for most MERCEDES-BENZ S320 cars and light trucks sold in the U.S.

    1997 MERCEDES-BENZ S320  3.2 L6 GAS Wiring Diagram1997 MERCEDES-BENZ S320 3.2 L6 GAS Wiring Diagram

    Components on diagram:
  • LH Front Door Switch
  • RH Front Door Switch
  • Ignition/Starter Switch
  • RCL Control Module
  • LH SBE Control Module
  • 1994 MERCEDES-BENZ S320  3.2 L6 GAS Wiring Diagram1994 MERCEDES-BENZ S320 3.2 L6 GAS Wiring Diagram

    Components on diagram:
  • Coolant Temperature Sensor
  • Intake Air Temperature Sensor
  • Air Injection Relay
  • Air Mass Sensor With Hot Wire
  • Solenoid Adjustable Camshaft Timing
  • CLICK HERE TO GET FULL ACCESS TO MERCEDES-BENZ S320 WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR MERCEDES-BENZ S320 AUTOMOBILES

    OEM TSB listings for most MERCEDES-BENZ S320 cars and light trucks sold in the U.S. from 1985+.

    Document: WIRING HARNESS DAMAGE - REVISED (DISCONTINUED)
    Vehicle: 1995 MERCEDES-BENZ S320 3.2 L6 GAS

    Auto Systems:
  • Chassis Electrical, Wiring, Fuses & Breakers, Wipers, Motors
  • Document: TECHNICIANS USING STAR DIAGNOSIS SYSTEMS DURING A ROAD TEST
    Vehicle: 1999 MERCEDES-BENZ S320 3.2 L6 GAS

    Auto Systems:
  • Tools, Equipment
  • CLICK HERE TO GET FULL ACCESS TO MERCEDES-BENZ S320 TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR MERCEDES-BENZ S320 AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 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 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 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 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

    CLICK HERE TO GET FULL ACCESS TO MERCEDES-BENZ S320 SPECIFICATIONS DATA!

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