2004-2011 Mitsubishi Endeavor Problems: 2 Issues Every Owner Should Know

2004-2011 Mitsubishi Endeavor Problems: 2 Issues Every Owner Should Know | Au7o

All 2 Known Issues

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On the 2004-2011 Mitsubishi Endeavor 3.8L 6G75 V6, the Endeavor 4-speed automatic transmission develops harsh shifting and premature wear, often failing between 100,000 and 130,000 miles. The transmission shares components with the Galant and Eclipse platforms, inheriting their reliability weaknesses.

This issue also affects: Mitsubishi Eclipse, Mitsubishi Galant, Mitsubishi Lancer

Common Symptoms

Hard shifting between 2nd and 3rd gear
Transmission slipping under acceleration
Delayed reverse engagement
Overheating during towing

How to Fix

Perform ATF changes every 30,000 miles. Install an auxiliary cooler for vehicles used for towing. A quality remanufactured transmission with updated clutch packs is the best repair option.

Typical repair cost:$1,500 - $4,000

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Community Reported

Medium Confidence0 reportsLast reported by owners Invalid DateReviewed Invalid Date

On the 2004-2011 Mitsubishi Endeavor, the Endeavor shares the same AC compressor platform as other Mitsubishi models of the era, and it is equally prone to premature failure. The compressor clutch and internal seals fail between 60,000 and 90,000 miles.

This issue also affects: Mitsubishi Galant, Mitsubishi Outlander, Mitsubishi Outlander Sport

Common Symptoms

AC blowing warm
Compressor clutch not engaging
Refrigerant leak from compressor seal
Intermittent cooling

How to Fix

Replace the compressor assembly with the receiver/drier and expansion valve. Flush AC lines and use the correct refrigerant charge. An OEM-quality aftermarket compressor provides good longevity at lower cost.

Typical repair cost:$500 - $1,200

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Community Reported

High Confidence0 reportsLast reported by owners Invalid DateReviewed Invalid Date

⚠️NHTSA Recalls6 recalls

FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP

MITSUBISHI IS RECALLING CERTAIN MODEL YEAR 2004-2010 ENDEAVOR VEHICLES ORIGINALLY SOLD IN OR CURRENTLY REGISTERED IN THE STATES OF CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, KENTUCKY, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, VIRGINIA, WEST VIRGINIA, WISCONSIN, AND WASHINGTON D.C. COLD STATES INCLUDE NORTH DAKOTA, SOUTH DAKOTA, NEBRASKA, KANSAS, OKLAHOMA, COLORADO, WYOMING, MONTANA, IDAHO, WASHINGTON, OREGON, AND UTAH. ADJOINING STATES INCLUDE ARKANSAS, TENNESSEE, AND NORTH CAROLINA. IN SEVERE CORROSIVE ENVIRONMENTS WHERE ROAD SALTS ARE FREQUENTLY USED IN WINTER VEHICLES MAY BE EXPOSED TO ROAD DEBRIS (MUD) MIXED WITH ROAD SALT. THIS MATERIAL CAN BECOME TRAPPED BETWEEN A REINFORCING BRACKET AND THE FUEL FILLER PIPE, POTENTIALLY CAUSING CORROSION. OVER TIME, CORROSION COULD CREATE A LEAK IN THE FUEL FILLER PIPE THAT COULD RESULT IN A FUEL LEAKAGE WHEN FUELING THE VEHICLE.

Campaign #10V06500025/02/2010

AIR BAGS

MITSUBISHI MOTORS NORTH AMERICA, INC. (MMNA) IS RECALLING CERTAIN MODEL YEAR 2010 ENDEAVOR MODEL VEHICLES MANUFACTURED BETWEEN MAY 26 AND JULY 28, 2009. THE RETAINER BRACKET USED FOR THE SEAT-MOUNTED SIDE AIRBAG FRAMES ON BOTH THE DRIVER AND FRONT PASSENGER SEATS MAY NOT HAVE BEEN PROPERLY WELDED.

Campaign #09V36100016/09/2009

ELECTRICAL SYSTEM:SOFTWARE

MITSUBISHI IS RECALLING CERTAIN MODEL YEAR 2006-2008 ENDEAVOR WITH MANUAL AIR CONDITIONING. DUE TO AN INCORRECT HEATER (HVAC) CONTROLLER SIGNAL, THE AIR FLOW FROM THE AIR VENTS MAY RANDOMLY CHANGE DIRECTION AND/OR THE TEMPERATURE MAY BRIEFLY CYCLE BETWEEN HOT AND COLD.

Campaign #10V51400020/10/2010

ELECTRICAL SYSTEM:IGNITION

MITSUBISHI IS RECALLING 120,000 MY 2004-2006 ENDEAVOR PASSENGER VEHICLES. DURING VEHICLE USE, THE IGNITION KEY INTERLOCK CABLE (WHICH IS A COMPONENT OF THE INTERLOCK SYSTEM) MAY ALLOW THE INTERLOCKING CAM TO FALL FORWARD AND ALLOW THE IGNITION KEY TO BE REMOVED FROM THE IGNITION SWITCH WHEN THE GEARSHIFT MECHANISM IS NOT IN THE PARK POSITION.

Campaign #08V13900026/03/2008

FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY

MITSUBISHI IS RECALLING 45,988 MY 2005-2007 ENDEAVOR, GALANT, ECLIPSE COUPE, AND MY 2007 ECLIPSE SPYDER VEHICLES. THE BRACKET THAT IS THE ATTACHMENT POINT FOR THE LEFT REAR FUEL TANK MOUNTING STRAP MAY HAVE BEEN IMPROPERLY FORMED DURING A METAL STAMPING PROCESS. THE PROCESS MAY HAVE CAUSED THE METAL TO HAVE A SPLIT IN THE AREA WHERE THE BOLT THAT HOLDS ONE OF THE TWO FUEL TANK STRAPS TO THE UNDERSIDE OF THE VEHICLE IS LOCATED. IN THE EVENT THE FUEL TANK IS FULL AND THE VEHICLE IS SUBJECT TO A SEVERE COLLISION, THE BRACKET MAY BREAK AND ALLOW THE FUEL TANK TO DROP DOWN, POSSIBLY CAUSING A FUEL LEAK.

Campaign #08V45400009/09/2008

+ 1 more recalls. Check all on NHTSA.gov

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Frequently Asked Questions

What are the most common Mitsubishi Endeavor problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2004-2011 Mitsubishi Endeavor has 2 documented issues. The most frequently reported are: Automatic Transmission Harsh Shifting and Failure, AC Compressor Premature Failure. Of these, 1 is rated critical and should be addressed promptly.

Is the Mitsubishi Endeavor reliable?

The 2004-2011 Mitsubishi Endeavor has 2 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 1 issue is rated critical: Automatic Transmission Harsh Shifting and Failure. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Mitsubishi Endeavor problems?

Repair costs for known Mitsubishi Endeavor issues range from $500 to $4,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Automatic Transmission Harsh Shifting and Failure, typically costs $1,500-$4,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What year Mitsubishi Endeavor is the most reliable?

Reliability varies across model years of the Mitsubishi Endeavor. Based on documented issues, problems are most commonly reported in earlier model years. Au7o recommends checking the specific known issues for your target year before purchasing, and having a pre-purchase inspection performed by a qualified mechanic. Our known issues database covers the 2004-2011 Mitsubishi Endeavor with 2 documented issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports.

What is the 2004-2011 Mitsubishi Endeavor Automatic Transmission Harsh Shifting and Failure?

The Endeavor 4-speed automatic transmission develops harsh shifting and premature wear, often failing between 100,000 and 130,000 miles. The transmission shares components with the Galant and Eclipse platforms, inheriting their reliability weaknesses. Repairs typically run $1,500-$4,000. Severity: high.

What is the 2004-2011 Mitsubishi Endeavor AC Compressor Premature Failure?

The Endeavor shares the same AC compressor platform as other Mitsubishi models of the era, and it is equally prone to premature failure. The compressor clutch and internal seals fail between 60,000 and 90,000 miles. Repairs typically run $500-$1,200. Severity: medium.

2004-2011 Mitsubishi Endeavor Problems: 2 Issues Every Owner Should Know

All 2 Known Issues

2004-2011 Mitsubishi Endeavor: Automatic Transmission Harsh Shifting and Failure#

Common Symptoms

How to Fix

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2004-2011 Mitsubishi Endeavor: AC Compressor Premature Failure#

Common Symptoms

How to Fix

Research This Issue

Other Mitsubishi Models

Frequently Asked Questions

What are the most common Mitsubishi Endeavor problems?

Is the Mitsubishi Endeavor reliable?

How much does it cost to fix common Mitsubishi Endeavor problems?

What year Mitsubishi Endeavor is the most reliable?

What is the 2004-2011 Mitsubishi Endeavor Automatic Transmission Harsh Shifting and Failure?

What is the 2004-2011 Mitsubishi Endeavor AC Compressor Premature Failure?