WINDOWS FOGGING UP, HEATER NOT WORKING, ANTI-FREEZE LEAKING INTO THE PASSENGER SIDE FLOORBOARD. *AK
2000 Mitsubishi Diamante
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2000 Mitsubishi Diamante do not stand out strongly from the model-year median of 31.5.
About this comparison →How this year compares
Owner complaints by model year
Compare all Diamante years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
22 reports with mileage · 29 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Visibility. Review the 27 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine And Engine Cooling. Review the 7 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Fuel System, Gasoline. Review the 3 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
Visibility complaints
27 reportsWINDOWS FOG CONSTANTLY AND I CAN NOT GET THEM DEFROSTED. SMOKE AND SMELL OF ANTIFREEZE COMES INTO CABIN OF CAR. TOOK TO DEALER A YEAR AGO AND WAS TOLD NOTHING WAS WRONG, CAR NOW HAS 98,000 MILES AND THEY ARE TELLING ME IT WILL COST 672.00 TO REPLACE THE HEATER CORE. I HAVE FOUND SEVERAL COMPLAINTS ABOUT THE SAME ISSUES. I BE…
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WINDOWS FOG CONSTANTLY AND I CAN NOT GET THEM DEFROSTED. SMOKE AND SMELL OF ANTIFREEZE COMES INTO CABIN OF CAR. TOOK TO DEALER A YEAR AGO AND WAS TOLD NOTHING WAS WRONG, CAR NOW HAS 98,000 MILES AND THEY ARE TELLING ME IT WILL COST 672.00 TO REPLACE THE HEATER CORE. I HAVE FOUND SEVERAL COMPLAINTS ABOUT THE SAME ISSUES. I BECAME ILL IN JANUARY OF THIS YEAR, THE DOCTORS (4 OF THEM AND THREE HOSPITALS, CT SCANS, ETC) COULD NOT FIGURE OUT WHAT IT WAS. TURNS OUT IT WAS BREATHING THE FUMES IN MY CAR. AT THAT TIME, THE SMOKE ONLY APPEARED A COUPLE OF TIMES, BUT NOW IT HAS INCREASED CONSIDERABLY. I THINK IT'S SAD THAT MITSUBISHI WILL NOT REPAIR THIS PROBLEM, NOR HAVE THEY CORRECTED IT.*AK
STRONG ANTIFREEZE SMELL AND VAPORS COMING THROUGH THE VENTS. ESPECIALLY WHEN THE HEATER IS TURNED ON. WINDOWS ARE FOGGING CONSTANTLY. THE CAR STARTED OVERHEATING AND HAVE TO REFILL ANTIFREEZE. SERVICE CENTER SAID ANTIFREEZE IS LEAKING AND EVAPORATING AND THEY HEARD ABOUT THIS PROBLEM BEFORE. *AK
AN ANTI FREEZE AND SMOKE ODOR WAS COMING INTO THE CABIN OF THE VEHICLE THROUGH THE AIR VENTS. DEALERSHIP INDICATED THIS WAS CAUSED BY A PROBLEM WITH THE HEATER CORE GASKET, AND NEEDED TO BE REPLACED. THE ENTIRE DASHBOARD HAS TO BE TAKEN APART TO REPLACE THE PART. THIS WAS A COMMON PROBLEM WITH THESE VEHICLES. *AK *SC
THE WINDOWS KEPT FOGGING UP, DEFROSTER WAS DID NOT CLEAR IT UP, 0 VISIBILITY, WHEN DEFROSTER WAS ON THERE WAS A STRONG SMELL OF ANTIFREEZE. WHEN CAR WAS DRIVEN FOR MORE THEN 30 MIN ONCE SHUT OF SMOKE WAS COMING OUT OF THE DASH BOARD VENT BY WINDSHIELD.*AK
THE HEATER CORE FAILED AND LEAKED ON THE FLOOR BOARD. THE CONSUMER WOULD SMELL CHEMICAL FUMES. THE MECHANIC REPAIRED THE PROBLEM TWICE, BUT THE CONSUMER IS STILL HAVING THE SAME PROBLEM. PLEASE PROVIDE MORE INFORMATION. *JB
I PURCHASED THE CAR USED FROM A MITSUBISHI DEALER, A MONTH OR SO LATER I NOTICED A MAPLE SYRUP TYPE SMELL. THE PROCEEDING MONTHS THE PROBLEM GOT WORSE AND NOTICED THAT MY WINDSHIELD KEPT FOGGING UP. I TOOK IT TO MY LOCAL REPAIR GUY WHO GAVE ME AN ESTIMATE OF ONE THOUSAND DOLLARS TO REPLACE THE HEATER CORE AND INFORMED ME THAT IF…
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I PURCHASED THE CAR USED FROM A MITSUBISHI DEALER, A MONTH OR SO LATER I NOTICED A MAPLE SYRUP TYPE SMELL. THE PROCEEDING MONTHS THE PROBLEM GOT WORSE AND NOTICED THAT MY WINDSHIELD KEPT FOGGING UP. I TOOK IT TO MY LOCAL REPAIR GUY WHO GAVE ME AN ESTIMATE OF ONE THOUSAND DOLLARS TO REPLACE THE HEATER CORE AND INFORMED ME THAT IF I DONT I COULD HAVE A COMPUTER FAILURE BECAUSE IT IS RIGHT UNDER THE HEATER CORE WHICH IN TURN MAY CAUSE AN ACCIDENT DUE TO LOSS OF CONTROL. MY PASSENGER SIDE CARPET IS NOW SOAKED WITH COOLANT AND THE SMELL IS HORRIBLE COMING FROM THE VENTS. I HAVE HEARD THAT THE COOLANT IS TOXIC AND CAN CAUSE PROBLEMS IN YOUR RESPIRATORY SYSTEM WHICH CONCERNS ME EVEN MORE.*AK
FOR SEVERAL WEEKS IT WAS BECOMING INCREASINGLY DIFFICULT FOR ME TO CLEAR THE WINDSHIELD ON MY CAR AND I ATTRIBUTED IT TO HOT, HUMID WEATHER. COMING BACK ON THE FREEWAY ONE EVENING IT SUDDENLY BECAME MUCH WORSE AND MY HUSBAND AND I TRIED MANY DIFFERENT COMBINATIONS OF COOL/WARM/FRESH AIR TO BE ABLE TO SEE OUT OF THE WINDOW, BUT …
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FOR SEVERAL WEEKS IT WAS BECOMING INCREASINGLY DIFFICULT FOR ME TO CLEAR THE WINDSHIELD ON MY CAR AND I ATTRIBUTED IT TO HOT, HUMID WEATHER. COMING BACK ON THE FREEWAY ONE EVENING IT SUDDENLY BECAME MUCH WORSE AND MY HUSBAND AND I TRIED MANY DIFFERENT COMBINATIONS OF COOL/WARM/FRESH AIR TO BE ABLE TO SEE OUT OF THE WINDOW, BUT IT NEVER FULLY CLEARED. IT WAS DANGEROUS TO DRIVE UNDER THOSE CONDITIONS, BUT WE MADE IT HOME. THERE WAS A WHITISH FILM BEGINNING TO FORM ON THE WINDOW, VISIBLE IN DAYLIGHT. WHAT WAS IN THE FUMES THAT FORMED THE FILM I AM AFRAID TO IMAGINE. SEVERAL DAYS LATER AS I WAS DRIVING MY SON TO SCHOOL WE BOTH NOTICED A WHITE, CLOUDY SMOKE COMING FROM THE VENTS DIRECTLY IN FRONT OF US. WE KEPT THE WINDOWS DOWN TO AVOID BREATHING IN THE FUMES. THE NEXT DAY I TOOK MY CAR TO THE DEALERSHIP AND WAS TOLD THE GASKETS ADJACENT TO THE HEATER CORE HAD FAILED. IT COST $5.10 FOR THE REPLACEMENT PART, BUT THE REPAIR COST TOTAL $560.00 BECAUSE THEY HAD TO REMOVE THE ENTIRE DASH TO REPLACE THE O-RINGS. MY CAR WAS IN THE SHOP FOR A FULL DAY. I'M ALSO CONCERNED BECAUSE I'VE SINCE LEARNED THAT THE ANTI-FREEZE LEAKING FROM THE "WORN-OUT" RINGS DRIPPED DOWN ONTO MY CAR'S COMPUTER. WHAT POTENTIAL DAMAGE COULD HAVE OCCURRED TO THE COMPUTER, IS IT OK NOW, AND COULD IT HAVE CAUSED A MAJOR ACCIDENT IF THE COMPUTER FAILED.*AK
NOTICED FAINT SMELL OF ANTI FREEZE IN OCT 2003. HAD PROBLEMS WITH DEFROSTER CLEARING WINDOWS, VERY HARD TO CLEAN. NOTICED PASSANGER 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 60000 MILES, AND IS WELL MAINTAINED. THIS HEATER CORE …
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NOTICED FAINT SMELL OF ANTI FREEZE IN OCT 2003. HAD PROBLEMS WITH DEFROSTER CLEARING WINDOWS, VERY HARD TO CLEAN. NOTICED PASSANGER 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 60000 MILES, AND IS WELL MAINTAINED. THIS HEATER CORE LEAKS DIRECTLY OVER COMPUTERS WHICH, AS FAR AS I KNOW, CONTROL THE ENGINE - AND COULD CAUSE IT TO ACT UNPREDICTABLY OR CUT OUT ALTOGETHER WHEN DRIVING. HEATER CORE GASKET WAS THE PROBLEM ACCORDING TO DEALER AND I HAVE HAD IT FIXED. *AK
WHILE DRIVING COOLANT WAS LEAKING ON PASSENGER SIDE. DEALERSHIP SERVICED VEHICLE AND DETERMINED HEATER CORE NEEDED TO BE REPLACED. *AK
Official recalls
304V428000 · Equipment:other:labels
Sep 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.
04V067000 · Equipment:other:owners/service/other Manual
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.
00V132000 · Parking Brake:driveline:hydraulic
May 8, 2000
VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE HEAD OF THE SCREW THAT HOLDS THE RETAINING CLIP FOR THE PARKING BRAKE SHOE CAN BECOME BRITTLE AND BREAK OFF.
Consequence & remedy
Consequence: IF THE SCREW HEAD BREAKS OFF, THE PARKING BRAKE SHOE RETAINER CLIP CAN BECOME DISLODGED AND COULD RESULT IN THE PARKING BRAKE DRAGGING AND/OR FAILURE OF THE PARKING BRAKE TO PROPERLY HOLD. SEIZURE OF THE PARKING BRAKE SHOE, ESPECIALLY ON WET OR SNOW COVERED ROADS, COULD RESULT IN LOCKUP OF ONE OF THE REAR WHEELS.
Remedy: DEALERS WILL REPLACE THE RETAINING CLIP SCREW AND IN THE PROCESS INSPECT THE REAR BRAKE SYSTEM OF ANY POSSIBLE RELATED DAMAGE. ANY RELATED DAMAGE THAT MAY BE FOUND WILL ALSO BE REPAIRED.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0No exact-year investigations in this snapshot.
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