Electronic control system for vehicle accessory devices

A system for managing user preference settings in a vehicle, the system comprising:

• an electronic control unit including a microcontroller and an electronic control unit memory, the electronic control unit controlling accessory devices, wherein the electronic control unit memory includes a code portion and a data portion, the code portion including a control algorithm executed by the microcontroller to control the accessory devices, the data portion being written with the user preference data and read by the microcontroller when executing the control algorithm;
• a data controller in communication with the microcontroller and adapted to receive user preference data;
• a PDA including a PDA processor, PDA memory, and transceiver in electrical communication, the PDA managing the user preference data, and the transceiver adapted to transmit the user preference data from the PDA to the data controller;
• and
• wherein the preference data is transmitted from the PDA to the electronic control unit via the data controller, the microcontroller controlling the accessory devices according to the user preference data.