Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

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really awful
Crashes / Fires:
0 / 0
Injuries / Deaths:
2 / 0
Average Mileage:
56,500 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2002 Mitsubishi Diamante accessories - exterior problems

accessories - exterior problem

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2002 Mitsubishi Diamante Owner Comments

problem #5

Nov 252010

Diamante 6-cyl

  • 91,000 miles


The heater core is an extremely dangerous problem. The windows in the car fog up so bad I couldnt drive the car...had to pull over and wipe the windows down. But the thing is...I didnt know what the problems was...until I realized the windows werent just being fogged by the cold, ect it was a toxic mist from a heater core problem...I pulled over 2 times because I got sick...I noticed a mist coming out of the all in all I called Mitsubishi and they refuse to do anything about this.this heater core problem can lead to accidents, sickness, and othe expensive problems in the car! the fumes are extremely toxic!!! there are 1000's of complaints and blogs about this problem...I'm sure there are 100,000+ complaints abpout this problem. And Mitsubishi refuses to help or do anything about this. I told them, is this gonna take a fatal accident for them to do something?" they replied, "im not answering that!" I told them that they should have recalled this problem. They replied, "sorry but your warranty is up we can't do nothing about it." This heater core problems leads to faulty transmission problems, electrical problems, hazerdous problems, sickness, interior of the car can be ruined because anitfreeze leaks through the dash board...where Mitsubishi placed the heater core. Made no sense to place a heater core above the electrical component of the transmission. They really messed up here and will not do anything about this. I think that the media should get involved because they probably wont do anything about if someone doesnt speak up!

- Freehold, NJ, USA

problem #4

Jul 242007

Diamante 6-cyl

  • Automatic transmission
  • 80,000 miles
The contact owns a 2002 Mitsubishi Diamante. While driving 37 mph, the vehicle jerked and the service engine warning indicator light illuminated. The contact attempted to accelerate and pull off the road, but when the engine revved, the vehicle moved approximately three feet and stopped. The vehicle had experienced this failure on two occasions. The dealer replaced the transmission at 20,000 miles. The contact also stated that the windshield was severely fogged. The dealer replaced the heater core because it was leaking antifreeze into the cooling system. The driver was nauseated for two weeks. The VIN was unknown. The current and failure mileages were 80,000.

- Dover , DE, USA

problem #3

Dec 182006

Diamante 6-cyl

  • Automatic transmission
  • 67,500 miles
Windows fogged up, maple syrup smell coming from heater. Respiratory sickness after incident.

- Hulbert , OK, USA

problem #2

Apr 262006

Diamante 6-cyl

  • Automatic transmission
  • 44,000 miles
: the contact stated the defroster failed and would not defrost the windshield. The dealership determined a clip in the system came loose and the clip was reconnected. Now, six months later, the problem has returned and the dealership determined the clip needs to be replaced.

- Appalachia, MD, USA

problem #1

Dec 282004


  • miles
My wife noticed little clouds of white smoke coming from the vents when the haeter/defroster was turned on, we could also smell something that smelled like syurp or antifreeze. The windows do not defrost anymore, which is a major safety hazard. I am told that this most likely from a broken heater core. If not replaced antifreeze can leak into the cars computer, which could cause a serious accident by shutting down the entire car. The estimated cost of repair is $400-$1000. I have read many complaints about this problem. I hope something can be done to fix this serious and potentially deadly situation.

- Severn, MD, USA

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