NHTSA owner reports · September 18, 2026 snapshot.
Engine And Engine Cooling complaints
38 reportsClear category filter20 miles · Jul 31, 2008
Electrical SystemElectronic Stability Control (esc)Engine And Engine Cooling
I OWN A 2002 MITSUBISHI DIAMANTE CAR, I BOUGHT THIS CAR IN 02 SINCE THE 1ST DAY I BOUGHT THE CAR THERE WAS PROBLEMS. THE COMPUTER IN THE CAR WENT CRAZY MY CHECK ENGINE LIGHT,,CRUISE CONTROL,ANTI LOCK BRAKE, TCL LIGHT ALL STARTED FLASHING . I TOOK THE CAR BACK TO THE DEALER & THEY REPLACED THE COMPUTER BUT IT DIDN'T WORK TH…
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I OWN A 2002 MITSUBISHI DIAMANTE CAR, I BOUGHT THIS CAR IN 02 SINCE THE 1ST DAY I BOUGHT THE CAR THERE WAS PROBLEMS. THE COMPUTER IN THE CAR WENT CRAZY MY CHECK ENGINE LIGHT,,CRUISE CONTROL,ANTI LOCK BRAKE, TCL LIGHT ALL STARTED FLASHING . I TOOK THE CAR BACK TO THE DEALER & THEY REPLACED THE COMPUTER BUT IT DIDN'T WORK THEY PUT 3 COMPUTERS IN SINCE THEN, THESE LIGHTS ARE STILL ON TILL THIS DAY. IN 06 MY TRANS BLEW I TOOK THE CAR BACK TO THE DEALER THEY REPLACED MY TRANS THE CAR STILL DOESN'T RIDE RIGHT. MY A/C TURNS ON BUT NOTHING COMES OUT SOMETIMES. IN THE WINTER THE INSIDE OF MY CAR BECOMES A FOG ALL OVER MY WINDOWS AND IT WONT STOP FOGGING UP. A SMELL IS COMING OUT OF MY VENTS LIKE A COFFEE SMELL & IM INHALING THIS SMELL WHENEVER IM IN THE CAR I HAVE TO GO TO A DOCTOR TO GET CHECKED OUT TO SEE IF I HAVE HEALTH ISSUES .MY SUN ROOF LEAKS WHEN IT RAINS,I TOOK MY CAR BACK TO THE DEALER TO HAVE ALL THESE ISSUES FIXED BUT THEY NEVER DID I PURCHASED THE CAR IN 02 THE WARRANTY LASTED 02-05 B/C THAT IS WHEN MY WARRANTY EXPIRED. WHEN I CALL THEY TELL ME I HAVE TO PAY OUT OF POCKET B/C THE WARRANTY EXPIRED. THIS ISN'T FAIR TO ANY MITSUBISHI OWNER I SHOULDN'T HAVE TO PAY TO HAVE MY CAR FIXED NOW AFTER THE WARRANTY WHEN ALL THE SAME PROBLEMS HAVE BEEN RECURRING SINCE I PURCHASED THE CAR AND THEY NEVER FIXED IT TO BEGIN WITH. I CAN UNDERSTAND IF I WAS THE ONLY PERSON WITH THESE PROBLEMS I DECIDED TO SEARCH THE INTERNET TO SEE IF ANYONE ELSE OWNED MY MAKE AND MODEL OF MY CAR TO SEE IF THEY HAD SIMILAR PROBLEMS SURE ENOUGH I CAME ACROSS A WEBSITE CALLED WWW.CARSURVEY.ORG/VIEWCOMMENTS_REVIEW_76426.HTML THERE'S OVER 50 PEOPLE WITH THE SAME PROBLEMS I HAVE WITH MY CAR.MITSUBISHI SHOULD FIX THESE PROBLEMS AND STAND BY THERE CARS. I CALLED CORPORATE HEADQUARTERS TODAY & WAS TOLD THERE'S NOTHING THEY CAN DO B/C ITS OUT OF WARRANTY. *TR
NHTSA ODI #10236534
75,000 miles · Jun 16, 2008
Engine And Engine CoolingStructure
NOTICED FAINT SMELL OF ANTI FREEZE APPROXIMATELY 9 MONTHS AGO. HAD PROBLEMS WITH DEFROSTER CLEARING WINDOWS. ALSO, SEEMED TO GET BETTER (OR MAYBE I GOT USED TO THE SMELL). NOW NOTICED PASSENGER SIDE FLOOR CARPET IS SOAKED WITH ANTI FREEZE. OBVIOUSLY A PROBLEM WITH THE HEATER CORE OR THE HOSE(S) WHICH CONNECT TO IT ARE LEAKING. C…
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NOTICED FAINT SMELL OF ANTI FREEZE APPROXIMATELY 9 MONTHS AGO. HAD PROBLEMS WITH DEFROSTER CLEARING WINDOWS. ALSO, SEEMED TO GET BETTER (OR MAYBE I GOT USED TO THE SMELL). NOW NOTICED PASSENGER SIDE FLOOR CARPET IS SOAKED WITH ANTI FREEZE. OBVIOUSLY A PROBLEM WITH THE HEATER CORE OR THE HOSE(S) WHICH CONNECT TO IT ARE LEAKING. CAR HAS 92000 MILES, AND IS WELL MAIN. *TR
NHTSA ODI #10231145
63,000 miles · Jun 9, 2008
Engine And Engine CoolingVisibility
THE HEATER CORE. I START SMELLING AN ANTIFREEZE SMELL INSIDE THE CAR THEN THE CHECK ENGINE SOON LIGHT CAME ON. ALSO THE TCL IS ON. THE DEALER SAID THAT IT IS A WHEEL SENSOR THAT WILL RUN ME $625. THE HEATER CORE IS $1,200. EVERY ONE THAT I TALK TO ON THE EMAIL SIGHT IS HAVING THE SAME PROBLEM. PLEASE HELP! THANKS. *TR
NHTSA ODI #10230393
67,800 miles · Feb 8, 2008
Engine And Engine CoolingVisibility
TL*THE CONTACT OWNS A 2002 MITSUBISHI DIAMANTE. THE CHECK ENGINE LIGHT BEGAN ILLUMINATING, THE HEATER COIL WAS LEAKING, AND THE WINDOWS WERE STEAMING. THE CONTACT SMELLED A FOUL ODOR COMING FROM THE VEHICLE. A MECHANIC DIAGNOSED THAT THE HEATER CORE NEEDED TO BE REPLACED. THE FAILURE MILEAGE WAS 67,800 AND CURRENT MILEAGE WA…
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TL*THE CONTACT OWNS A 2002 MITSUBISHI DIAMANTE. THE CHECK ENGINE LIGHT BEGAN ILLUMINATING, THE HEATER COIL WAS LEAKING, AND THE WINDOWS WERE STEAMING. THE CONTACT SMELLED A FOUL ODOR COMING FROM THE VEHICLE. A MECHANIC DIAGNOSED THAT THE HEATER CORE NEEDED TO BE REPLACED. THE FAILURE MILEAGE WAS 67,800 AND CURRENT MILEAGE WAS 67,990.
NHTSA ODI #10217465
80,000 miles · Jan 30, 2008
Engine And Engine Cooling
I FOUND POSTINGS OF THE SAME HEATER CORE ISSUE. WINDSHIELD FOG AND THE AWFUL SYRUP SMELL OF ANITFREEZE. THERE NEEDS TO BE A RECALL AS YOU CAN CLEARLY SEE THE HISTORY OF COMPLAINTS DATING BACK TO 1995 OR EARLIER. PLEASE LOOK INTO THIS URGENT MATTER. *TR
NHTSA ODI #10216525
Mileage unknown · Jan 23, 2008
Engine And Engine CoolingPower Train
HEATER CORE DEFECTIVE AND LEAKED COOLANT UNDERDASH ON TO TRANSMISSION ECM AND NEUTRAL SAFETY SWITCH. BECAUSE OF THIS VERY COMMON MANUFACTURE DEFECT I HAD TO HAVE MY HEATER CORE, TRANSMISSION ECM, NEUTRAL SAFETY SWITCH REPLACE. AND MY TRANSMISSION REBUILD, NONE OF WHICH WERE WARRANTED BY THE MANUFACTURE AND WERE NOT CHEAP. *TR
NHTSA ODI #10215743
Mileage unknown · Jan 15, 2008
Engine And Engine Cooling
HEATER CORE LEAKING INTO PASSENGER SIDE OF CAR, RELEASING COOLANT VAPOR INTO CAR CABIN. *TR
NHTSA ODI #10214885
Mileage unknown · Nov 24, 2007
Electrical SystemEngine And Engine CoolingService Brakes, Hydraulic
I HAVE A 2002 MITSUBISHI DIAMANTE. I HAVE KEPT REGULAR MAINTENANCE. I AM SUBMITTING THIS FORM BECAUSE OF A HEATER CORE ISSUE I AM HAVING. HOWEVER I HAVE HAD THE FOLLOWING PROBLEMS WITH THIS CAR. ALL THESE PROBLEMS SEEM TO BE RECURRING PROBLEMS THAT HAPPEN TO MANY PEOPLE WITH THIS MODEL. AT LEAST THAT IS WHAT I FIND WHEN I SEAR…
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I HAVE A 2002 MITSUBISHI DIAMANTE. I HAVE KEPT REGULAR MAINTENANCE. I AM SUBMITTING THIS FORM BECAUSE OF A HEATER CORE ISSUE I AM HAVING. HOWEVER I HAVE HAD THE FOLLOWING PROBLEMS WITH THIS CAR. ALL THESE PROBLEMS SEEM TO BE RECURRING PROBLEMS THAT HAPPEN TO MANY PEOPLE WITH THIS MODEL. AT LEAST THAT IS WHAT I FIND WHEN I SEARCH THE ISSUES ON THE INTERNET 1- VIBRATION IN STEERING WHEEL --THIS HAPPENED MULTIPLE TIMES AFTER TAKING CAR BACK TO DEALER-IT APPEARS THERE IS A KNOWN ISSUE WITH THE ROTORS IN THIS CAR. AFTER HAVING THE ROTORS CUT TWICE BY THE DEALER WITH NO LONG LASTING SUCCESS. I HAD TO HAVE THE BRAKES AND ROTORS REPLACED BY A MECHANIC ( CAR HAD LESS THE 10,000 MILES WHEN ISSUE STARTED HAPPENING) 2- RUSTED MUFFLER--NOT SURE IF THIS ISSUE HAPPENS OFTEN BUT AFTER 23,000 MILES I HAD TO HAVE MY MUFFLER REPLACED BECAUSE THERE WAS A HOLE RUSTED THROUGH THE TOP OF IT-I WAS TOLD THIS COULD HAPPEN FOR NOT USING THE CAR VERY MUCH IN THE WINTER TIME( ROAD SALT CAN CAUSE THE RUST) 3- HEATER CORE- I KNOW HAVE A HEATER CORE PROBLEM IN THIS CAR. I HAVE ANTIFREEZE LEAKING IN PASSENGER COMPARTMENT. I HAVE AN ANTIFREEZE SMELL IN THE CABIN OF THE CAR. MY WINDOWS FOG AND THE DEFROSTER WILL NOT CLEAR THE WINDSHIELD ( MAKES IT WORSE). I AM LOW IN ANTIFREEZE BECAUSE OF THIS. MY SERVICE ENGINE LIGHT HAS NOW COME ON AND I AM TOLD THIS CAN BE CAUSED BY LEAKING ANTIFREEZE ONTO THE COMPUTER WHICH IS POSITIONED UNDER THE HEATER CORE. THIS ISSUE IS WIDELY REPORTED ON THE INTERNET IN MANY FORUMS AND SEEMS EVERYBODY WITH A DIAMANTE WILL EVENTUALLY HAVE THIS PROBLEM. I AM BEING TOLD THIS REPAIR CAN COST OVER 1,000 DOLLARS 4-I HAVE HAD TO REPLACE 3 SENSORS IN THE ENGINE 2 EGR AND 1 IDLE SENDER (COST AROUND 1,500 DOLLARS). THIS MAY OR MAY NOT BE BECAUSE OF THE HEATER CORE ISSUES CAUSING THE CARS COMPUTER TO FAIL. *TR
NHTSA ODI #10209795
55,000 miles · Apr 4, 2007
Engine And Engine Cooling
RECENTLY THE WINDOWS KEEP FOGGING UP IN MY 2002 MITSUBISHI DIAMANTE. I HAVE FOUND THROUGH COMPLAINTS WITH YOU AND OTHER INTERNET SITES THAT THIS IS A COMMON COMPLAINT AND VERY EXPENSIVE TO REMEDY. IS THERE NOTHING BEING DONE BY NHSTA TO MAKE THE MANUFACTURE FIX THIS DANGEROUS PROBLEM? EVERY DAY IT GETS WORSE. SO FAR I HAVE NOT N…
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RECENTLY THE WINDOWS KEEP FOGGING UP IN MY 2002 MITSUBISHI DIAMANTE. I HAVE FOUND THROUGH COMPLAINTS WITH YOU AND OTHER INTERNET SITES THAT THIS IS A COMMON COMPLAINT AND VERY EXPENSIVE TO REMEDY. IS THERE NOTHING BEING DONE BY NHSTA TO MAKE THE MANUFACTURE FIX THIS DANGEROUS PROBLEM? EVERY DAY IT GETS WORSE. SO FAR I HAVE NOT NOTICED A COOLANT LEAK, BUT FROM WHAT I HAVE READ, IT IS FORTHCOMING IS A VERY DANGEROUS PROBLEM THAT NEEDS TO BE SOLVED!! *AK
NHTSA ODI #10186998
53,941 miles · Feb 25, 2007
Engine And Engine CoolingVisibility
LEAKAGE OF ANTIFREEZE ( ENGINE COOLANT) INTO THE PASSENGER COMPARTMENT OF VEHICLE. THE COOLANT SMELL WAS APPARENT WITHIN THE CAR. *NM
NHTSA ODI #10183444
Official recalls
3Sep 1, 2004
CERTAIN PASSENGER VEHICLES FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 208, 'OCCUPANT CRASH PROTECTION.' THE BILINGUAL ENGLISH/SPANISH REMOVABLE AIR BAG WARNING LABELS AFFIXED TO THE DASH AND TO THE SUNVISOR DO NOT MEET THE SIZE REQUIREMENTS OF THE STANDARD.
Consequence & remedy
Consequence: THIS DOES NOT MEET THE REQUIREMENTS OF THE STANDARD.
Remedy: MITSUBISHI CARIBBEAN WILL MAIL A CUSTOMER NOTIFICATION LETTER CONTAINING A WRITTEN DESCRIPTION AND A GRAPHIC OF THE BI-LINGUAL DASHBOARD AIR BAG WARNING LABEL. IN ADDITION, ALL CURRENT 2000-2004 NATIVA OWNERS WILL ALSO RECEIVE REPLACEMENT AIR BAG ALERT LABELS FOR THE SUN VISORS. THIS RECALL IS EXPECTED TO BEGIN DURING MARCH OR APRIL 2005. THE NOTIFICATION TO THE NATIVA OWNERS IS EXPECTED TO BEGIN DURING APRIL OR MAY 2005. OWNERS SHOULD CONTACT MITSUBISHI CARIBBEAN AT 1-787-251-8715.
Feb 11, 2004
CERTAIN SPORT UTILITY AND PASSENGER VEHICLES FAIL TO COMPLY WITH FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 225, "CHILD RESTRAINT ANCHORAGE SYSTEMS." THE OWNER'S MANUAL DOES NOT CONTAIN A STEP-BY-STEP DESCRIPTION FOR HEADREST ADJUSTMENT WHEN INSTALLING A CHILD RESTRAINT SYSTEM (CRS) TETHER STRAP.
Consequence & remedy
Consequence: IF THE TETHER STRAP IS IMPROPERLY INSTALLED TO THE TETHER ANCHOR, THE CHILD SAFETY SEAT MAY NOT BE SUFFICIENT RESTRAINED. IN THE EVENT OF A CRASH, THE CHILD COULD BE INJURED.
Remedy: A LETTER OUTLINING THE PROBLEM WILL BE SENT TO OWNERS ALONG WITH A STICKER CONTAINING THE CORRECT INSTRUCTIONS AS WELL AS INSTRUCTIONS ON WHERE TO AFFIX THE STICKER IN THE OWNER'S MANUAL. THE RECALL BEGAN ON MARCH 29, 2004. OWNERS SHOULD CONTACT MITSUBISHI AT 1-888-648-7820.
Apr 7, 2002
ON CERTAIN PASSENGER VEHICLES, THE MAIN UNDER HOOD ELECTRICAL WIRING HARNESS MAY HAVE INSUFFICIENT CLEARANCE BETWEEN THE ENGINE CONTROL HARNESS AND THE EXHAUST HEAT SHIELD. AS A RESULT, THE HARNESS COULD COME IN CONTACT WITH THE HEAT SHIELD, WHICH COULD RESULT IN MELTING OF THE HARNESS INSULATION.
Consequence & remedy
Consequence: THE MELTING OF THE HARNESS INSULATION COULD RESULT IN GROUNDING OF THE CRANK ANGLE SENSOR WIRING, CAUSING THE ENGINE TO RUN ERRATICALLY OR STOP SUDDENLY, INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL INSPECT THE HARNESS FOR DAMAGE AND, IF NONE IS EVIDENT, WILL TIE THE HARNESS BACK TO PREVENT THE HARNESS FROM EVER COMING INTO CONTACT WITH THE HEAT SHIELD. ANY HARNESS THAT SHOWS EVIDENCE OF DAMAGE WILL BE REPAIRED AS NECESSARY AND THEN TIED BACK TO PREVENT FUTURE DAMAGE. OWNER NOTIFICATION BEGAN MAY 13, 2002. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT MITSUBISHI AT 1-800-222-0037.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗