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2003 MERCEDES-BENZ E320 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
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Tire Pressure Monitoring System
- Starter & Alternator Replacement
- Cabin Air Filter Locations & Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
A/C & HEATER SERVICE PROCEDURES FOR 2003 MERCEDES-BENZ E320 AUTOMOBILES
Air Bag System Precautions -> Mercedes-Benz -> Disarming
Vehicle: 2003 MERCEDES-BENZ E320 3.2 V6 GAS
When the battery is disconnected, the vehicle electronic memory will be lost. Make note of radio stations and other codes. Never use a back-up power source to retain memory.
- Obtain radio theft protection CODE card.
- Turn ignition switch to OFF position and remove key.
- D...
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BRAKE SERVICE PROCEDURES FOR 2003 MERCEDES-BENZ E320 AUTOMOBILES
Anti-lock Brakes -> System Service -> ABS Control Unit -> ASR/ETS/ESP -> Brake System Bleed -> CLK55, CLK320, CLK430, CLK500, E55, E320, E430, E500, SL55, SL500& SL600 -> CLK55, CLK320, CLK430, CLK500, E55, E320, E430, E500, SL55, SL500, SL600, SLK32, SLK230 & SLK320 -> Component Replacement -> ESP Charging Pump -> ESP Pressurizing Piston Unit -> Front Wheel -> Hydraulic Unit -> Rear Axle -> Speed Sensor
Vehicle: 2003 MERCEDES-BENZ E320 3.2 V6 GAS
Brake System Bleed
Refer to procedure as outlined in "Hydraulic Brake Systems."
Component Replacement
Hydraulic Unit
ASR/ETS/ESP
CLK55, CLK320, CLK430, CLK500, E55, E320, E430, E500, SL55, SL500, SL600, SLK32, SLK230 & SLK320
- Turn ignition switch to Off position.
- Disconnect hydraulic lines. Seal lines and connections.
- Remove plastic caps and hydraulic unit.
- Reverse procedure to install. Torque hydraulic lines to 11 ft. lbs.
ABS Control Unit
CLK55, CLK320, CLK430, CLK500, E55, E320, E430, E500, SL55, SL500& SL600
- On E55, E320, E430 and E500 models, disconnect vacuum line.
- On all models, disconne...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 MERCEDES-BENZ E320 AUTOMOBILES
Mercedes-Benz -> Component Locations -> 2003-06 E320 & E500 Sedans Less 4 Matic & 2004-06 E Series
Vehicle: 2003 MERCEDES-BENZ E320 3.2 V6 GAS
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 MERCEDES-BENZ E320 AUTOMOBILES
DRIVESHAFT, Replace -> FRONT -> REAR
Vehicle: 2003 MERCEDES-BENZ E320 3.2 V6 GAS
FRONT
- Remove righthand side exhaust heat shield, Fig. .
- Remove propeller shaft mounting bolts.
- Remove propeller shaft.
- If rubber boot must be replaced, proceed as follows:
- Pull universal joint off propeller shaft.
- Remove rubber boot.
- Reverse procedure to install, noting the following:
- Coat splined shaft profile with Molykote grease, or equivalent.
- Push rubber boot with universal joint onto propeller shaft, ensuring markings align.
- Steady propeller shaft with suitable screwdriver when installing mounting bolts.
- Torque driveshaft intermediate bearing bolts to 23 ft. lbs.
- Torque driveshaft...
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TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR 2003 MERCEDES-BENZ E320 AUTOMOBILES
Reset Procedures
Vehicle: 2003 MERCEDES-BENZ E320 3.2 V6 GAS
- Verify pressures of all four tires.
- Turn electronic key in starter switch to position 2 (the engine must not be running).
- Press forward or back button on the multifunction steering wheel until the display for trip and main odometer appears.
- Press up or down arrow button repeatedly until the tire inflation pressure monitor appears.
- Press and hold reset button on the instrument cluster until the message MONITOR CURRENT TIRE PRESSURE? appears. Release the R button.
- Press button + (YES) on the multifunction steering wheel to activate the tire inflation pressure monitor. The message TIRE...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 MERCEDES-BENZ E320 AUTOMOBILES
Alternator, Replace
Vehicle: 2003 MERCEDES-BENZ E320 3.2 V6 GAS
- Remove engine compartment bottom cover.
- Remove viscous fan clutch and drive belt.
- Disconnect electrical connecto...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2003 MERCEDES-BENZ E320 AUTOMOBILES
Cabin Air Filter Service -> Mercedes-Benz -> 2003-09 E & 2006-09 CLS Class
Vehicle: 2003 MERCEDES-BENZ E320 3.2 V6 GAS
On 2003-05 models, 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.
On 2006-08 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 2009 models except AMG, under normal operating conditions the cabin air filter should be replaced every 24 months or 20,000 miles. In dusty areas change the cabin air filter more of...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 MERCEDES-BENZ E320 AUTOMOBILES
Mercedes-Benz -> Tire Pressure Monitoring System (TPMS) Warning Indicator -> 1998-2009 E Class -> Description -> Relearn -> Reset
Vehicle: 2003 MERCEDES-BENZ E320 3.2 V6 GAS
Description
While the vehicle is being driven, the Run Flat Indicator monitors the set tire inflation pressures by evaluating each wheels rotational speed. This allows the system to detect a significant loss of pressure in a tire.
If a wheel's rotational speed changes due to falling tire inflation pressure, you will see a corresponding warning message in the multifunction display.
The Run Flat Indicator may function in a restricted manner or with a delay if: snow chains are mounted to the vehicle; winter road conditions prevail; you are driving on a loose surface (e.g. sand or gr...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 MERCEDES-BENZ E320 AUTOMOBILES
Heater Hose, Replace -> Bypass -> Inlet -> Outlet
Vehicle: 2003 MERCEDES-BENZ E320 3.2 V6 GAS
Inlet
- Drain coolant into a suitable container.
- Reposition clamp on heat exchanger feed pipe and remove hose.
- Reposition clamp on thermostat housing and remove hose.
- Remove hose from vehicle.
- Reverse procedure to install.
Outlet
- Drain coolant into a suitable container.
- Reposition clamp on heat exchanger return pi...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 MERCEDES-BENZ E320 AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 MERCEDES-BENZ E320 3.2 V6 GAS
- Remove viscous fan clutch.
- Swivel tensioning pulley clockw...
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COMPONENT LOCATION DIAGRAMS FOR 2003 MERCEDES-BENZ E320 AUTOMOBILES
Component location diagrams for most 2003 MERCEDES-BENZ E320 cars and light trucks sold in the U.S. from 1990+.
Beneath Front Passenger Seat Diagram for 2003 MERCEDES-BENZ E320 3.2 V6 GAS Components on diagram: |
Bulkhead in Trunk Diagram for 2003 MERCEDES-BENZ E320 3.2 V6 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 2003 MERCEDES-BENZ E320 AUTOMOBILES
OEM drawn wiring diagrams for most 2003 MERCEDES-BENZ E320 cars and light trucks sold in the U.S.
2003 MERCEDES-BENZ E320 3.2 V6 GAS Wiring Diagram Components on diagram: |
2003 MERCEDES-BENZ E320 3.2 V6 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 MERCEDES-BENZ E320 AUTOMOBILES
OEM TSB listings for most 2003 MERCEDES-BENZ E320 cars and light trucks sold in the U.S. from 1985+.
Document: Re-code the Software Calibration Number (SCN) Vehicle: 2003 MERCEDES-BENZ E320 3.2 V6 GAS Auto Systems: |
Document: Maintenance Systems Overview Vehicle: 2003 MERCEDES-BENZ E320 3.2 V6 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 MERCEDES-BENZ E320 AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 MERCEDES-BENZ E320 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 2003 MERCEDES-BENZ E320 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 2003 MERCEDES-BENZ E320 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 2003 MERCEDES-BENZ E320 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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