The CX-9 tachometer feature in the AD-Display with version 58 has been removed from all updates.When updating MAZDA CONNECT from version 58, make sure to turn it off on the AD-Display tab in Settings before performing the update. If not, the tachometer will still be displayed after the update with no way to turn it off. In order to remove it, the battery will need to be disconnected to remove it from memory.