OBD-II scanners have various improvements over the old OBD scanners. OBD-II scanners fit into cars using a 16-pin port beneath the steering wheel and have similar codes. This standardization makes it possible to use the same OBD-II scanner for any car. This is unlike the old days when you needed to find a specific OBD-II scanner to read your manufacturer-specific codes. Modern OB2 scanners have additional functions like Bluetooth capability for smartphone connection and tire pressure monitors reset. In addition, some of them come with large display screens with large storage space and RAM.