Table 1 shows two common electrical system related problems of the 2003 Mitsubishi Diamante.
| Problem Category | Number of Problems |
|---|---|
| Ignition problems | |
| Anti-theft Controller problems |
Various intermittent failures to include, car locking on its own, headlights not going out when car is turned off, car not dinging when keys left in ignition, and window fuse being blown when windows are not being raised or lowered. Have taken car to dealer and an electrical specialist. Both have said they can't fix it since the problem is intermittent.
Car doors are locking by themselves, the alarm for keys being left in the ignition no longer sounds, the automatic unlock when keys left in the ignition no longer works, and the headlights do not turn off when the car is turned off and door opened. Have been stranded several times due to keys locked in the car, and a dead battery due to headlights being left on.