Variant Code Structure

The four digit structure of the variant code consists of a 16 bit binary code which converts to a 4 digit hexadecimal code. Each hex character provides information pertaining to specific functions, characteristic maps and vehicle data.

Fig 1: Identifying Variant Code Structure

Courtesy of BMW OF NORTH AMERICA, INC.

The information from the variant code is used to define the operational data to be assigned to the operating program of the module.

Each hex digit has a binary equivalent that provides four 1's or 0's which results in a total of 16 bits of information (or choices) per hexadecimal digit.

Fig 2: Identifying Variant Code Information

Courtesy of BMW OF NORTH AMERICA, INC.

Under no circumstances should the variant code to be changed from the assigned number for the vehicle. Erratic engine operation and possible engine damage may result.