![]() The biggest difference is that access to the vehicle through the OBD II port might be limited because of the lack of a valid key. Key and security system diagnostics are not that much different than driveability diagnostics. ![]() The implication for shops and technicians is that no-start, no-crank and module diagnostics have a possible fault with the security and keys. Keyless entry has made it possible to enter a car without pressing a button and to start a car from inside the house. These new systems have been more useful for discouraging thieves by making the most expensive vehicle parts unusable by requiring security information. ![]() New vehicles are tough to steal thanks to more advanced immobilizer systems. Immobilizers and keyless entry have done great things for vehicle owners. ![]() Most of the time, a key tool will be required for diagnostics. If you think that programming keys is just connecting to the OBD II port and putting a blank key on a programming pad, this is the wrong way to approach this service and tool costs. If the vehicle has a new module, relearning the keys and key programming tools might be required. With some vehicles, six different modules in the car might use the code from the key. The key is only one small component of the total immobilizer or security system/strategy. ![]()
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