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An alternate solution that's reasonable and perhaps responsible as well is to use FORSCAN software loaded on a laptop, tablet, phone. The interface to the ODB port is a dongle that's below $100. Some dongles have a USB port, others are Bluetooth interface. Search this forum for FORSCAN and you'll find more info and the FORSCAN forum as well. Good luck!

A lot of probabilities. Somebody needs to do an inspection. If you are not capable of performing your own diagnostics, then a good mechanic is needed. You don't want everyone online giving you wild guesses about the various computer modules which control different functions, the electrical relays and fuses, the wiring harnesses and connectors, squirrels and rats chewing on wires, water intrusion shorting out electronics............