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1999 Mitsubishi Diamante visibility problems

11 complaints (48% of all complaints for this car). Typical mileage when it fails: 86,000.

owner complaints
11
of this car's complaints
48%
typical mileage
86,000
crashes
0
recalls
0

Which part fails

  • Defroster/defogger/HVAC system: heater core
    8
  • Rearview mirrors/devices: interior
    1
  • Defroster/defogger/HVAC system
    1

At what mileage

Complaints by mileage at the time of the problem.

0k-25k
25k-50k
50k-75k
75k-100k
100k-125k
125k-150k
150k-175k
175k-200k
200k+

Mitsubishi Diamante visibility problems in other years

199219931997199819992000200120022003

Related recalls

No recalls on record for this model year.

What 1999 Mitsubishi Diamante owners say

Most recent owner complaints, unedited.

Filed Feb 5, 2019 · Brakes, Suspension · 208,640 miles · PR

"takata recall" I found the most recent recall on the page, https://driving-tests.org/VIN-decoder/ when I try to know more about VIN number was. I searched in google search. And that why I found this information. Thans a lot for your help. The vehicle was in motion.

Filed Sep 7, 2010 · Visibility · LA

Tl*the contact owns 1999 mitsubishi diamante. The contact stated that while traveling at various speeds the rear view mirror would shake; and was not securely attached to the windshield. The vehicle was taken to an authorized dealer who stated that the rear view mirror was attached properly. On a separate occasion the rearview mirror broke and detached from the windshield. The rear view mirror was replaced by an authorized dealer. The contact detected the problem since the purchase date of the vehicle. The failure mileage was 200. The VIN was unavailable.

Filed Dec 21, 2006 · Visibility · 86,000 miles · MN

Smell of antifreeze inside car, windows fogged up making it very difficult to drive. Mechanic says is likely heater core failure, $700 to fix.

Filed Aug 7, 2006 · Visibility · KY

Heater core on 1999 diamante leaked in passenger compartment. Windows fogged up and electrical componets were leaked on.

Filed Jun 26, 2006 · Visibility · 60,000 miles · WA

The windows fog up so bad that it becomes hard to see. The vents spew out the pungent smell of anti-freeze. I have noticed on more than a few occasions that puffs of vapor shoot out from under the passenger side dash and vents. I know that anti-freeze is poisonous to humans and don't think that its safe for me to be driving the vehicle when I have to breath in the vapors.

Filed May 14, 2006 · Visibility · 145,000 miles · NY

My heater core is faulty, my defogger wont work, and it is emitting some terrible fumes in the car, also anti freeze is leaking on the front passenger floor.

Filed Feb 14, 2006 · Visibility · 86,900 miles · TN

I own a 1999 mitsubishi diamante with 87k miles on the odometer. My wife was driving the vehicle last week and noticed that the windows of the car started to fog up. The fogging became so thick that she had to pull over (blindly) and frantically wipe the window clean in order to see out of the car. She had to cancel her trip short because the problem kept recurring the car also started to smell like anti-freeze, which, according to my wife, continued to get stronger as she drove it home. I called the local mitsubishi dealership and was told by the person in the service department that this is a common problem for this car and that by not repairing it immediately it can cause the ecu to fail (the car computer) which could cause a loss of control if this occurs at speed. Mitsubishi is aware of the problem but has not taken action to issue a recall of the defective part (the gaskets that attach the heater core to the cooling system). I am logging this complaint only because I have come across a site on the internet where owners of the same type of vehicle (but different years) are detailing the exact same issue with their cars.

Filed Apr 26, 2005 · Visibility · VA

Windows fogged so badly I could not see, syrupy smell in vehicle, loss of coolant in reservioir, puddle of coolant on passenger side floor.

Filed Mar 10, 2005 · Visibility · 78,000 miles · WI

I'm experiencing a syrupy smell inside the car when the heat is on. Per the various research I have performed, this is a sign of a failing heater core. This is a known failure by mits per tsb 627114 that was issued. Additionally, on >2000 model year diamantes, mits began putting the vehicle?s computer (ecu) in a plastic bag so that when the heater core does fail, it does not ruin the ecu and create additional safety risks. This is just another sign that mits is aware of the issue and rather than designing out the problem, they put a bandage over a potential effected area. Unfortunately my vehicle is 1999 which does not have the plastic bag and thus I am exposed to the additional risks. The estimate I received to fix this was $1100. I am filing this complaint to ascertain that this is a very common problem in diamantes and mits should be aware of 3 main risks: (1) the defect exposes customers to an unacceptable level of toxic ethylene glycol which should not exceed 10-25ppm levels (2) the heater core failing could result in coolant leaking onto the vehicle?s ecu which could result in unexpected failure which poses additional hazards. (3) faulty heater core makes the visibility difficult due to fogging of windshield thus putting the driver at greater risk. As a product safety engineer, I am very disturbed that all the complaints already filed and the associated risk has not resulted in any action. I highly encourage the federal safety agency to take preventative measures in working with mits to issue a recall for this problem rather than wait for an injury or death to occur as a result of a poorly engineered heater core design.

Filed Aug 6, 2004 · Visibility · 70,000 miles · NY

Mitsubishi diamante 1999: windshield started to get foggy, inside cabin smelled on coolant and occasional puffs of "smoke" evaporated out of the wents. This presented very dangerous driving conditions. Could not drive car for 2 months. Dealership diagnosed and wanted $1000 for the repair of the heater core. Due to the lack of money, I did it myself with proper instructions. Problem was in bad o-rings that caused coolant to leak into cabin and over important computer module. Half-year later, no smell, no wapor, no fog in the cabin. Pictures can be seen at http://www.joldic.com/gallery/heater-core-adventure.

Questions about the 1999 Mitsubishi Diamante visibility

Does the 1999 Mitsubishi Diamante have visibility problems?

Owners have filed 11 complaints about the visibility of the 1999 Mitsubishi Diamante, 48% of all its complaints, more than any other problem.

At what mileage do 1999 Mitsubishi Diamante visibility problems start?

The typical (median) mileage in owner complaints is 86,000 miles.

Was there a recall on the 1999 Mitsubishi Diamante visibility?

There is no recall for this problem on this model year.

What year does the Mitsubishi Diamante have the most visibility problems?

The Mitsubishi Diamante model years with the most visibility complaints are 2002 (71 complaints), 2001 (56 complaints) and 2003 (28 complaints).

Other 1999 Mitsubishi Diamante problems

Brakes 3Engine 3Suspension 3Body 1Fuel system 1Seat belts 1Seats 1Steering 1Tires 1

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