2004 Mitsubishi Endeavor Problems: 8 Known Issues

2004 Mitsubishi Endeavor Problems: 8 Known Issues | Au7o

NHTSA Recalls6 recalls

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

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

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

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

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

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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 Mitsubishi Endeavor has 8 documented issues. The most frequently reported are: Automatic Transmission Harsh Shifting and Failure, Fuel Filler Pipe Corrosion and Fuel Leak - Recall 10V065, Rear Crossmember/Subframe Mount Corrosion Failure in Salt States. Of these, 3 are rated critical and should be addressed promptly.

Is the Mitsubishi Endeavor reliable?

The 2004 Mitsubishi Endeavor has 8 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 3 issues are rated critical: Automatic Transmission Harsh Shifting and Failure and Fuel Filler Pipe Corrosion and Fuel Leak - Recall 10V065 and Rear Crossmember/Subframe Mount Corrosion Failure in Salt States. 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 $0 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 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 2004-2010 Mitsubishi Endeavor Fuel Filler Pipe Corrosion and Fuel Leak - Recall 10V065?

NHTSA campaign 10V065000 covers 2004-2010 Endeavors built January 2003 through March 2010 and operated in road-salt states. Long-term exposure to salt-laden road spray corrodes the fuel filler pipe until it perforates, and fuel leaks from the pipe - most obviously during refuelin… Repairs typically run $0-$0. Severity: high.

What is the 2004-2011 Mitsubishi Endeavor Rear Crossmember/Subframe Mount Corrosion Failure in Salt States?

On salt-belt Endeavors the rear crossmember (the subframe carrying the rear suspension) rots at its body mounts until a mount snaps off. Owners report a heavy metallic crunching noise from the rear before discovering a mount rusted through. This is the single most consequential r… Repairs typically run $600-$2,500. Severity: high.

What is the 2004-2011 Mitsubishi Endeavor A/C Evaporator Drain Clogging and Water in the Passenger Footwell?

Endeavors left the factory without a cabin air filter - Mitsubishi treated the blower housing filter as an accessory - so leaves, needles, and grit are drawn straight onto the evaporator. That debris, combined with factory gasket material that breaks down over time, packs the eva… Repairs typically run $0-$250. Severity: medium.

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.

What is the 2004-2011 Mitsubishi Endeavor Propeller Shaft Center Support Bearing Collapse (AWD)?

On AWD Endeavors the rubber carrier around the driveshaft center support bearing deteriorates and collapses, letting the bearing run dry and out of alignment. Owners describe a belt-squeal or whistle that only shows up after 10-15 minutes of driving once things heat up, rising wi… Repairs typically run $350-$1,200. Severity: medium.

What is the 2004-2011 Mitsubishi Endeavor Torque Converter Clutch Shudder from ATF Breakdown or Non-Genuine Fluid?

A distinct, fluid-driven complaint on the 4-speed automatic, separate from the harsh-shift/failure pattern. Drivers feel a shudder or fine vibration - often described as driving over rumble strips - at a steady throttle around 35-50 mph in 3rd or 4th gear near 1500 rpm, when the… Repairs typically run $150-$2,200. Severity: medium.

What is the 2004-2011 Mitsubishi Endeavor Manifold Pre-Catalyst Efficiency Failure Setting P0421 or P0431?

The 6G75 Endeavor runs three catalysts: a pre-cat integrated at each exhaust manifold plus an unmonitored underfloor unit. Only the two manifold pre-cats are monitored, so a check-engine light for catalyst efficiency always points at a manifold cat, never at the big underfloor co… Repairs typically run $600-$2,000. Severity: medium.

All 8 Known Issues

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

2004-2011 Mitsubishi Endeavor: Torque Converter Clutch Shudder from ATF Breakdown or Non-Genuine Fluid#

2004-2010 Mitsubishi Endeavor: Fuel Filler Pipe Corrosion and Fuel Leak - Recall 10V065#

2004-2011 Mitsubishi Endeavor: Rear Crossmember/Subframe Mount Corrosion Failure in Salt States#

2004-2011 Mitsubishi Endeavor: A/C Evaporator Drain Clogging and Water in the Passenger Footwell#

2004-2011 Mitsubishi Endeavor: AC Compressor Premature Failure#

2004-2011 Mitsubishi Endeavor: Propeller Shaft Center Support Bearing Collapse (AWD)#

2004-2011 Mitsubishi Endeavor: Manifold Pre-Catalyst Efficiency Failure Setting P0421 or P0431#

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