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2003 MERCEDES-BENZ C320 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 2003 MERCEDES-BENZ C320 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 C320 automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 2003 MERCEDES-BENZ C320 AUTOMOBILES
Mercedes-Benz -> Technical Service Bulletins -> Blower Inoperative Or Produces Low Air Flow -> All Models Equipped w/Automatic Air Conditioning
Vehicle: 2003 MERCEDES-BENZ C320 3.2 V6 GAS
All Models Equipped w/Automatic Air Conditioning
On some of these models the air conditioning system may operate with little or no A/C vent air flow.
This condition may be caused by the electronic blower regulator.
To correct this condition, proceed as follows:
- Remove blower housing cover and air filter.
- Connect suitable ammeter to blower motor red wire.
- Start engine and set A/C to EC and Max blower speed mode.
- Ensure highest speed has been selected, then enter diagnostic mode by pressing REST ...
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BRAKE SERVICE PROCEDURES FOR 2003 MERCEDES-BENZ C320 AUTOMOBILES
Hydraulic Brake Systems -> Brake System Bleed -> Less ESP -> With ESP
Vehicle: 2003 MERCEDES-BENZ C320 4matic 3.2 V6 GAS
Less ESP
- Connect suitable brake fluid changing tool following tool manufacturer's instructions. Bleed pressure is 29 psi.
- Open righthand rear brake caliper bleed screw and allow approximately 2.7 ounces of brake fluid to flow out without any bubbles.
- Tighten bleed screw to specifications.
- Repeat bleeding procedure at lefthand rear, righthand front and lefthand front calipers.
- On CL55, CL500, CL600, S55, S430, S500 and S600 models, open master cylinder bleed screw and allow brake fluid to flow without any bubbles. Tighten bleed screw to specifications.
- On all models, operate brake p...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 MERCEDES-BENZ C320 AUTOMOBILES
Mercedes-Benz -> Component Locations -> C32, C230, C240, C320, CL55, CL500, CL600, CLK55, CLK320, CLK500, ML320, ML430, ML500, SLK32, SLK230 & SLK320
Vehicle: 2003 MERCEDES-BENZ C320 3.2 V6 GAS
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 MERCEDES-BENZ C320 AUTOMOBILES
DRIVESHAFT, Replace -> Front -> Rear
Vehicle: 2003 MERCEDES-BENZ C320 3.2 V6 GAS
Front
- Raise and support vehicle.
- Remove right-hand sensor, downstream of TWC.
- Match mark front propeller shaft relative to flange of front axle gear and to flange of transfer case.
- Detach front propeller shaft from flange of front axle gear.
- Detach front propeller shaft from flange of transfer case.
- Remove propeller shaft from front axle gear.
- Reverse procedure to install, noting the following:
- Torque flexible coupling to transfer case (M10) 108 in. lbs. (M12) 13 ft. lbs.
- Torque flexible coupling to front axle gear to (M10) 108 in. lbs. (M12) 13 ft. lbs.
Rear
- Raise and support vehicle.
- ...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 MERCEDES-BENZ C320 AUTOMOBILES
Alternator, Replace
Vehicle: 2003 MERCEDES-BENZ C320 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 C320 AUTOMOBILES
Cabin Air Filter Service -> Mercedes-Benz -> 2002-07 C & 2002-09 CLK Class
Vehicle: 2003 MERCEDES-BENZ C320 4matic 3.2 V6 GAS
On 2002-05 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 often.
On 2006-09 AMG mo...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 MERCEDES-BENZ C320 AUTOMOBILES
Mercedes-Benz -> Air Bag Warning Lamp ->
Vehicle: 2003 MERCEDES-BENZ C320 4matic 3.2 V6 GAS
If the Air Bag warning lamp lights and stays on, diagnosis and ...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 MERCEDES-BENZ C320 AUTOMOBILES
Radiator, Replace
Vehicle: 2003 MERCEDES-BENZ C320 3.2 V6 GAS
- Remove engine compartment panel.
- Drain radiator coolant into suitable container.
- Disconnect fan connector and remove shroud.
- Remove radiator bottom ATF line fixture mounting bolt.
- Disconnect ATF lines from radiator. Plug and seal lines and openings.
- Remove cli...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 MERCEDES-BENZ C320 AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 MERCEDES-BENZ C320 3.2 V6 GAS
- Disconnect fan connector and remove shroud.
- Remove fan shroud.
- Loosen belt by swiveling tensioning pulley stud bolt counterclockwise.
- Lock tensio...
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COMPONENT LOCATION DIAGRAMS FOR 2003 MERCEDES-BENZ C320 AUTOMOBILES
Component location diagrams for most 2003 MERCEDES-BENZ C320 cars and light trucks sold in the U.S. from 1990+.
 Glove Compartment Diagram for 2003 MERCEDES-BENZ C320 4matic 3.2 V6 GASComponents on diagram: |
 Dashboard, Behind Steering Wheel Diagram for 2003 MERCEDES-BENZ C320 3.2 V6 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 2003 MERCEDES-BENZ C320 AUTOMOBILES
OEM drawn wiring diagrams for most 2003 MERCEDES-BENZ C320 cars and light trucks sold in the U.S.
 2003 MERCEDES-BENZ C320 4matic 3.2 V6 GAS Wiring DiagramComponents on diagram: |
 2003 MERCEDES-BENZ C320 4matic 3.2 V6 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 MERCEDES-BENZ C320 AUTOMOBILES
OEM TSB listings for most 2003 MERCEDES-BENZ C320 cars and light trucks sold in the U.S. from 1985+.
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Document: Re-code the Software Calibration Number (SCN) Vehicle: 2003 MERCEDES-BENZ C320 3.2 V6 GAS Auto Systems: |
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Document: Maintenance Systems Overview Vehicle: 2003 MERCEDES-BENZ C320 3.2 V6 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 MERCEDES-BENZ C320 AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 MERCEDES-BENZ C320 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 C320 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 C320 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 C320 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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