2004 Jeep Wrangler Service and Repair Manual

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Factory-Grade Data

2004 Jeep Wrangler service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Designed for technicians and DIY owners, this manual helps you diagnose issues correctly, follow proven repair steps, and use wiring diagrams and system sections to track faults faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Electrical diagnostics with wiring diagrams
  • Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more

Trims covered

  • Rubicon Sport Utility 2-Door
  • X Sport Utility 2-Door
  • Sahara Sport Utility 2-Door
  • Sport Sport Utility 2-Door
  • Unlimited Sport Utility 2-Door
  • SE Sport Utility 2-Door

Engines covered

  • 4.0L 242Cu. In. l6 GAS OHV Naturally Aspirated
  • 2.4L 148Cu. In. l4 GAS DOHC Naturally Aspirated

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams

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Vehicle Safety Data

2004 Jeep Wrangler Recalls & Complaints

NHTSA #06E02200013/03/2006Component: SERVICE BRAKES, HYDRAULIC

CERTAIN AFTERMARKET BRAKE HYDRAULIC MASTER CYLINDERS SOLD AS REPLACEMENT BRAKE CYLINDERS FOR CERTAIN FORD, DAIMLERCHRYSLER, AND JEEP PASSENGER VEHICLES. THESE BRAKE CYLINDERS WERE SOLD UNDER THE BRAN

Consequence

LOSS OF BRAKE FLUID CAN LEAD TO A DECREASE IN BRAKE LINE PRESSURE AND AN INCREASE IN STOPPING DISTAN

Remedy

AFFINIA (BRAKE PARTS, INC.) WILL REPLACE THE SUBJECT BRAKE HYDRAULIC MASTER CYLINDERS FREE OF CHARGE

NHTSA #04V04800003/02/2004Component: EQUIPMENT:OTHER:LABELS

ON CERTAIN SPORT UTILITY VEHICLES, DUE TO A RECENT SOFTWARE PROGRAMMING ERROR, THE TIRE, WHEEL, AND INFLATION PRESSURE INFORMATION WAS INADVERTENTLY OMITTED FROM THE VEHICLE CERTIFICATION LABEL.

Consequence

THE VEHICLE OWNER WOULD NOT BE AWARE OF THE TIRE, WHEEL, AND INFLATION PRESSURE INFORMATION FOR THEI

Remedy

OWNERS WILL BE PROVIDED WITH A CORRECTED TIRE CERTIFICATION LABEL. OWNER NOTIFICATION BEGAN ON MARC

NHTSA #06E01100001/02/2006Component: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

CERTAIN AFTERMARKET AIRTEX ELECTRIC FUEL PUMPS INSTALLED FOR USE AS REPLACEMENT EQUIPMENT FOR CERTAIN 1997-2004 JEEP WRANGLER; 1997-2001 JEEP CHEROKEE; 1997-2004 JEEP GRAND CHEROKEE; AND 2000-2003 DOD

Consequence

IN THE PRESENCE OF AN IGNITION SOURCE, A FUEL LEAK COULD RESULT IN A FIRE.

Remedy

AIRTEX WILL NOTIFY ITS CUSTOMERS AND WILL REPLACE THE AFFECTED FUEL PUMPS FREE OF CHARGE. THE RECAL

TSB #11010205

Plate - Planetary

TSB #10230298

Security Module Lock Out After Entering the PIN to Unlock The Wireless Control Module (WCM)

TSB #10229256

KEY, Master If replacing the key/FOBIK on a WJ, KJ, TJ, or PT Cruiser, use the "AC" NIC level part number. The "AB" NIC level will not program to these platforms. For all other platforms, if the "AB" NIC level will not program to the vehicl

TSB #10223762

Security Module Lock Out After Entering the PIN to Unlock The Wireless Control Module (WCM)

TSB #10223525

Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes P0407 ? EGR Sensor B Circuit Low, or P0408 ? EGR Sensor B Circuit High Set

TSB #10221686

KEY, Master If replacing the key/FOBIK on a WJ, KJ, TJ, or PT Cruiser, use the "AC" NIC level part number. The "AB" NIC level will not program to these platforms. For all other platforms, if the "AB" NIC level will not program to the vehicl

TSB #10191460

Valve Body. These may cause over drive cycling.

TSB #10175735

Charging System, Battery Diagnostic Tools and Warranty This information only bulletin discusses using the correct test equipment for testing batteries and charging systems, and also warranty reimbursement when battery replacements are neces

Showing the 8 most recent of 47 technical service bulletins on file with NHTSA.

20041109Component: FUEL SYSTEM, GASOLINE:STORAGECrash reportedFire reported1 injured

THE VEHICLE CAUGHT ON FIRE. *NM THE CONSUMER WAS HIT ON THE PASSENGER SIDE DOOR CAUSING THE OTHER DRIVERS BUMPER TO WEDGE INTO THE CONSUMERS GAS TANK. THE BACK DOOR OF THE CONSUMERS JEEP WAS TORN O

20141028Component: AIR BAGSCrash reported2 injured

TEXTING DRIVER TURNED INTO MY LANE WITH NO CHANCE TO HIT BRAKES FOR ME WE HIT HEAD ON AT 35 MPH. THE CHEVY IMPALAS AIR BAGS WENT OFF OURS DID NOT . AFTER THE HARDEST HIT OR IMPACT OF MY LIFE WE ROLLED

20070305Component: AIR BAGS:FRONTALCrash reported2 injured

TL- THE CONTACT OWNS A 2004 JEEP WRANGLER EXTREME. THE CONTACT'S DAUGHTER WAS INVOLVED IN 2 CRASHES , AND THE AIRBAGS DID NOT DEPLOY EITHER TIME. THE CONTACT STATED THAT BOTH OF THE ACCIDENTS HAPPE

20050508Component: VISIBILITY:GLASS, SIDE/REARCrash reported2 injured

I DRIVING MY JEEP AND WAS HIT ON THE DRIVERS SIDE BY A MERCEDES THAT WAS MOVING 35MPH. I WATCH THE WHOLE SCENE COMING THROUGH MY FRONT SOFT TOP GLASS WINDOW. MY FACE HIT THE SOFT TOP WINDOW AND BROKE

20050508Component: VISIBILITYCrash reported2 injured

I DRIVING MY JEEP AND WAS HIT ON THE DRIVERS SIDE BY A MERCEDES THAT WAS MOVING 35MPH. I WATCH THE WHOLE SCENE COMING THROUGH MY FRONT SOFT TOP GLASS WINDOW. MY FACE HIT THE SOFT TOP WINDOW AND BROKE

Showing the 5 most serious of 281 complaints filed with NHTSA.

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