Woah! You better understand you are getting into a car with all kinds of hidden tricks purposely designed in to require expensive trips to the dealer. You are not going to replace an Engine Computer and have any hope the engine will start and run. It will need to be programmed to the vehicle. VW also has numerous other computers that will lock up simply from disconnecting the battery to perform other services. That includes the radio.
A failed sensor is detected by the computer, which sets a related diagnostic fault code. That has been how these systems work since the early 1980's. How could that system work if a computer was damaged by that failed sensor? On most brands, the only thing that could come close to causing a problem is if the 5.0 volt, 8.0 volt, or 10-volt supply to a sensor became grounded, but there are safeguards built in for that too. You simply locate and repair the short, then turn the ignition switch off and back on to reset that power supply.
Also, keep in mind that anytime someone says, "all it needs is, ... ", you can be sure it does not. If it was that easy, they would have already done it. Why sell a car broken when you could get a lot more for it once the repairs are done? What really happened is they tried to fix it and either gave up after butchering other parts, or they found out how expensive it was going to be. The goal is to dump the project off onto some other unsuspecting soul. We call these, "For Sale As Is" cars.
Tuesday, January 24th, 2017 AT 5:51 PM