问：什么会导致2台主计算机在6个月内不良

This does sound like a very frustrating experience. Unfortunately it is difficult to pinpoint exactly是什么导致您的计算机变坏without knowing what kind of computers have been installed in your vehicle.

Aftermarket, used or refurbished computers tend to have many more issues compared to a new computer that comes directly from the manufacturer. From my experience, I have found that it is not uncommon for computers on Chryslers to go bad often. Very often, drastic change in weather, such as extreme heat and cold, can cause the cold solder joints on the circuit board of the computer to expand and contract, resulting in bad connections. Incorrect charging voltage will also reek havoc on your Chrysler’s electrical system as well.

For your particular situation, I would recommend taking your vehicle to the dealership to have themdiagnose and replace your car’s computerwith a dealer part. My reason for this recommendation is to regulate quality control on the parts being installed on the vehicle, as well as the warranty that will go with the repair.

大多数独立的商店用二手或翻新，有时甚至是售后市场的零件维修和替换计算机。他们的意图是试图为您省钱，但有时这并不总是最好的解决方案。