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Vehicle Battery Drain Test has become problematic in modern cars as new cars are loaded with electronics. When you disconnect the battery, most of the electronics programming will finish. Some vehicles will not even start radio code will vanish; even pulling out a fuse, some modules will turn on. In this case, the test is wrong, and the customer has to suffer from replacing unwanted parts. Nowadays, drawing a parasitic test requires qualified testers, modern techniques and modern equipment.

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If tIf there is a short circuit. It is trouble for those mechanics who have no wiring diagrams facility or do not have access to the car manufacturer's portal. Some companies supply wiring diagrams, but they cannot provide their services for every car model. Therefore the technicians have to get access to the car manufacturers' portals. These online services are costly as the Portals require Manufacturers Orignal Diagnostic machines that Dealers use, and these Portals charge their services per hour. Here is a short circuit. It is trouble for those mechanics who have no wiring diagrams facility or do not have access to the car manufacturer's portal. Some companies supply wiring diagrams, but they cannot provide their services for every car model. Therefore the technicians have to get access to the car manufacturers' portals. These online services are costly as the Portals require Manufacturers Orignal Diagnostic machines that Dealers use, and these Portals charge their services per hour.

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Car manufacturers release car data after the car warranty that is three years to five years. During this warranty, if someone buys an accident car to repair, it is trouble for a technician to repair the vehicle.