The 1998 Mitsubishi Diamante has 1 NHTSA recall campaign affecting an estimated 100,432 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 35 complaints with NHTSA, most often about the visibility. Last updated July 5, 2026.
Recall campaigns
EQUIPMENT04V4280002004-09-01100,432 affected
Defect
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
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…
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC
2
ELECTRICAL SYSTEM:IGNITION:MODULE
1
ELECTRICAL SYSTEM:SOFTWARE
1
ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY
1
EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.
1
SEAT BELTS:REAR/OTHER
1
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
1
STEERING:HYDRAULIC POWER ASSIST:POWER STEERING FLUID
1
STRUCTURE:BODY
1
Total complaints35
What owners report
Verbatim reports filed with NHTSA, lightly edited for readability and with personal
information removed.
“The heater core has failed (once again) I am not sure of any company that has realeased their cars with such a major failure without taking some kind of responsibility to recall this item in the car. Nearly all of the heater cores from mitsubishi diamantes that I have seen are all bad. Leaks onto…”
“We just cleared canadian customs at blaine wa, pacific crossing, and were accelerating to speed limit on I 5 freeway when the car accelerated to near 100 miles an hour. The tach at some point was 7500 and increasing. The accelerator was stuck and eventually we were able to get to the emergency…”
“This is the second time the heater core has started to leak. It was replaced 40k miles ago and I was charged $ 1,000 for repair costs. Having researched this, it is due to faulty heater core gaskets which mitsubishi replaced the defective gaskets with a redesigned one. The car is undrivable due to…”
“Will not pass emission there are no readiness codes stored in computer. *tr”
“Everytime the heater is switched on, I can feel a weird smell which will last for about 10 mins. This smell seems like suffocating and have to open the windows for the fresh air to enter. There is some kind of leak in the engine compartment, I am not sure where the leak is from. I am bit worried…”
“Failure of heater core gaskets resulting in fumes inside the car from anti-freeze; this is the 2nd time this has happened with this vehicle in the last 35,000 miles and the repair labor is estimated at 6 hours, which is around $1,000. *jb”
“1998 mitsubishi diamante heater core leaking fogging windshield during freeway travel. Hazard to health with while operation auto. *nm”
“Windows fog up and cannot be cleared by the defroster. Very strong smell of anti-freeze inside the car. Smokey vapors come out of the heating vents. I'm having difficulty breathing while driving my car, and believe the cause of my nausea and headache is due to breathing anti-freeze vapors. Stain…”
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL,
FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 1998 Mitsubishi Diamante as of
July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page
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