2008 Jeep Wrangler Service and Repair Manual

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Factory-Grade Data

2008 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
  • Unlimited Rubicon Sport Utility 4-Door
  • Unlimited X Sport Utility 4-Door
  • Unlimited Sahara Sport Utility 4-Door
  • X Sport Utility 2-Door
  • Sahara Sport Utility 2-Door

Engines covered

  • 3.8L 3778CC 231Cu. In. V6 GAS OHV 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

2008 Jeep Wrangler Recalls & Complaints

NHTSA #13E01000025/02/2013Component: EQUIPMENT

Quadratec, Inc. is recalling certain aftermarket accessory, driver-side, Ultimate Floor Liners part numbers 14254.0301 07, 14254.0301 08, 14254.0301Q, 14254.0302 07, 14254.0302 08, 14254.0302Q, 14254.

Consequence

If the liner shifts forward it may impede the operation of the accelerator and possibly lead to unin

Remedy

Quadratec will notify owners and either exchange the liners or provide them with a hook guard kit to

NHTSA #16V35200024/05/2016Component: AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE

Chrysler (FCA US LLC) expanded the affected population to include 73,712 2005-2009 RAM 2500 trucks produced at the St. Louis North Assembly Plant. With this change, Chrysler is recalling certain mode

Consequence

These vehicles are equipped with certain air bag inflators assembled as part of the passenger fronta

Remedy

Owners are advised not to drive their vehicle until the recall repair is complete. Chrysler will no

NHTSA #16V29000011/05/2016Component: AIR BAGS:FRONTAL:DRIVER SIDE:INFLATOR MODULE

Chrysler (FCA US LLC) is recalling certain model year 2007-2010 Jeep Wrangler JK vehicles manufactured March 2, 2006, to August 13, 2010. The clockspring assembly may become contaminated with dust and

Consequence

Failure of the air bag circuit may prevent the driver's frontal air bag from deploying in the event

Remedy

Chrysler will notify owners, and dealers will replace the clockspring, wheel back cover, and column

NHTSA #09E04400009/07/2009Component: TRAILER HITCHES

CHRYSLER IS RECALLING 308 AFTERMARKET MOPAR TOW BAR ASSEMBLIES, P/N 82209758, SOLD DURING 2007 AND 2008 CALENDAR YEAR WHICH ARE USED TO TOW MODEL YEAR 2007 AND 2008 JEEP WRANGLER VEHICLES.

Consequence

THE TOW BAR CAN FAIL UNDER CERTAIN DRIVING CONDITIONS. THIS CAN RESULT IN THE TOWED VEHICLE SEPARAT

Remedy

CHRYSLER WILL NOTIFY THE OWNERS OF ALL 2007 AND 2008 MODEL YEAR JEEP WRANGLER VEHICLES WHO COULD HAV

NHTSA #13V17600007/05/2013Component: AIR BAGS

Chrysler Group LLC (Chrysler) is recalling certain model year 2008-2012 Jeep Wrangler right-hand drive vehicles manufactured February 1, 2007, through October 10, 2011. The affected vehicles have air

Consequence

In the event of a crash necessitating airbag deployment, a broken electrical circuit in the airbag c

Remedy

Chrysler will notify owners, and dealers will replace the clockspring and add a steering wheel dust

NHTSA #09V43600005/11/2009Component: POWER TRAIN:AUTOMATIC TRANSMISSION

CHRYSLER IS RECALLING CERTAIN MODEL YEAR 2007 THROUGH 2008 JEEP WRANGLER VEHICLES MANUFACTURED FROM JUNE 2006 THROUGH JULY 2008, EQUIPPED WITH AUTOMATIC TRANSMISSIONS. THESE VEHICLES WERE NOT EQUIPPE

Consequence

FLUID COULD BOIL OVER AND MAY COME INTO CONTACT WITH A HOT ENGINE OR EXHAUST COMPONENT AND CAUSE A F

Remedy

DEALERS WILL INSPECT AND INSTALL A "HOTOIL" MESSAGE IN THE INSTRUMENT CLUSTER AND A CHIME INDICATING

NHTSA #10V23600003/06/2010Component: SERVICE BRAKES, HYDRAULIC

CHRYSLER IS RECALLING CERTAIN MODEL YEAR 2007 THROUGH 2010 JEEP WRANGLER LEFT AND RIGHT HAND DRIVE PASSENGER VEHICLES MANUFACTURED FROM MAY 15, 2006 THROUGH APRIL 22, 2010. THERE MAY BE CONTACT BETWE

Consequence

A BRAKE FLUID LEAK CAN CAUSE PARTIAL LOSS OF SERVICE BRAKES AT THE AFFECTED WHEEL INCREASING THE RIS

Remedy

CHRYSLER WILL NOTIFY OWNERS AND DEALERS WILL REPAIR THE VEHICLES FREE OF CHARGE. OWNERS MAY CONTACT

NHTSA #11V52800002/11/2011Component: AIR BAGS:FRONTAL

CHRYSLER IS RECALLING CERTAIN MODEL YEAR 2008-2012 RIGHT HAND DRIVE (RHD) JEEP WRANGLER VEHICLES MANUFACTURED FROM FEBRUARY 1, 2007, THROUGH OCTOBER 10, 2011. SOME VEHICLES MAY BE EQUIPPED WITH DRIVE

Consequence

A BROKEN ELECTRICAL CIRCUIT IN THE AIRBAG CLOCKSPRING WIRING ASSEMBLY CAN LEAD TO NON-DEPLOYMENT OF

Remedy

CHRYSLER WILL NOTIFY OWNERS AND REMEDY THE VEHICLES AS NECESSARY FREE OF CHARGE. CHRYSLER WILL MAIL

TSB #11023612

SWITCH - CLUTCH STARTER INTERLOCK & MASTER CYLINDER ASSEMBLY - CLUTCH

TSB #11022027

Verify Reman part number availability. Order the "R" part number for all orders: Warranty, Mopar, customer pay and service contract. Order "68" part number for New unsold units only.

TSB #11022026

Verify Reman part number availability. Order the "R" part number for all orders: Warranty, Mopar, customer pay and service contract. Order "68" part number for New unsold units only.

TSB #11017445

ACTUATOR - A/C AND HEATER

TSB #11017435

ACTUATOR - A/C AND HEATER

TSB #11010205

Plate - Planetary

TSB #10248509

Connector kit Before ordering this connector repair kit 68018957A$, check it in the Mopar Connector Repair Kit Website to confirm part number and applicability. There is an error with the wiring diagrams in Service Library that is causing t

TSB #10244348

Connector kit Before ordering this connector repair kit 68018957A$, check it in the Mopar Connector Repair Kit Website to confirm part number and applicability. There is an error with the wiring diagrams in Service Library that is causing t

Showing the 8 most recent of 95 technical service bulletins on file with NHTSA.

20150724Component: AIR BAGSCrash reported2 injured

JULY 10, 2015: DRIVING TO WORK APPROXIMATELY 8:15 AM CST. CAR IN FRONT OF ME STOPPED SUDDENLY AND I FELT THE BREAKS WERE NOT SLOWING THE VEHICLE DOWN ENOUGH TO AVOID IMPACT. WITH A VEHICLE ON MY RIGHT

20150724Component: SEAT BELTSCrash reported2 injured

JULY 10, 2015: DRIVING TO WORK APPROXIMATELY 8:15 AM CST. CAR IN FRONT OF ME STOPPED SUDDENLY AND I FELT THE BREAKS WERE NOT SLOWING THE VEHICLE DOWN ENOUGH TO AVOID IMPACT. WITH A VEHICLE ON MY RIGHT

20200505Component: AIR BAGSCrash reported1 injured

I WAS TRAVELING AT AROUND 45MPH REAR ENDED A STOPPED VEHICLE ON THE FREEWAY AND MY AIRBAG DID NOT DEPLOY. I FRACTURED MY HAND. *TR

20180130Component: AIR BAGSCrash reported1 injured

TL* THE CONTACT OWNED A 2008 JEEP WRANGLER. WHILE DRIVING APPROXIMATELY 35 MPH, THE STEERING WHEEL SUDDENLY AND ERRONEOUSLY TURNED TO THE LEFT. AS A RESULT, THE CONTACT DROVE INTO THE OPPOSITE LANE FA

20180130Component: STEERINGCrash reported1 injured

TL* THE CONTACT OWNED A 2008 JEEP WRANGLER. WHILE DRIVING APPROXIMATELY 35 MPH, THE STEERING WHEEL SUDDENLY AND ERRONEOUSLY TURNED TO THE LEFT. AS A RESULT, THE CONTACT DROVE INTO THE OPPOSITE LANE FA

Showing the 5 most serious of 1252 complaints filed with NHTSA.

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