求翻译：Auto ignition for many reasons. Circuit, the circuit and car parts damage are likely to ignite. The accident more than 60% spontaneous, because the problems caused by car circuit. The short-circuit the common problems are two, one line of natural aging, short-circuit caused by overheating at high temperatures; the second is the owner of the car after the vehicle been modified circuit, such as adding a variety of electronic devices, such as electronic security devices, embedded navigation devices, car audio, or modified air-conditioning equipment. These devices, if properly modified, will increase the load car circuit, leading to overheating of the circuit, induced by spontaneous combustion at high temperatures.是什么意思？

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