A security setting method for a camera system of a vehicle comprising the steps of • creating a camera system with at least a first camera module with a first identification number, a second camera module with a second identification number and an electronic control unit (ECU) ; • creating at least one first camera module Hash value (H12) for the first identification number, at least one second camera module Hash value (H14) based on the second identification number and/or at least one camera pod assembly Hash value (H2) based on the first and second identification numbers; and • storing at least one of the Hash values comprising • storing the at least one first Hash value (H12) in the second camera module and the at least one second Hash value (H14) in the first camera module and/or • storing the at least one camera pod assembly Hash value (H2) in the camera pod assembly and/or • storing the at least one first Hash value (H12) and the at least one second Hash value (H14) as a pair and/or • storing the at least one first Hash value (H12) and the at least one second Hash value (H14) in the ECU as a ECU Hash value (H3), wherein at least one camera module or a camera pod assembly is replaced by the following steps: • replacing at least one camera module or camera pod assembly , • creating a new Hash value (H512) of the replacement camera module or creating a new Hash value of the replacement camera pod assembly, • creating new calibration data hash value (H412) of the replacement camera module or the replacement camera pod assembly, and • replacing the old calibration data and Hash values with storing the new Hash values (H512, H412) of the replacement camera module or the replacement camera pod assembly. • creating a camera system with at least a first camera module with a first identification number, a second camera module with a second identification number and an electronic control unit (ECU) ; • creating at least one first camera module Hash value (H12) for the first identification number, at least one second camera module Hash value (H14) based on the second identification number and/or at least one camera pod assembly Hash value (H2) based on the first and second identification numbers; and • storing at least one of the Hash values comprising • storing the at least one first Hash value (H12) in the second camera module and the at least one second Hash value (H14) in the first camera module and/or • storing the at least one camera pod assembly Hash value (H2) in the camera pod assembly and/or • storing the at least one first Hash value (H12) and the at least one second Hash value (H14) as a pair and/or • storing the at least one first Hash value (H12) and the at least one second Hash value (H14) in the ECU as a ECU Hash value (H3), • storing the at least one first Hash value (H12) in the second camera module and the at least one second Hash value (H14) in the first camera module and/or • storing the at least one camera pod assembly Hash value (H2) in the camera pod assembly and/or • storing the at least one first Hash value (H12) and the at least one second Hash value (H14) as a pair and/or • storing the at least one first Hash value (H12) and the at least one second Hash value (H14) in the ECU as a ECU Hash value (H3), • replacing at least one camera module or camera pod assembly , • creating a new Hash value (H512) of the replacement camera module or creating a new Hash value of the replacement camera pod assembly, • creating new calibration data hash value (H412) of the replacement camera module or the replacement camera pod assembly, and • replacing the old calibration data and Hash values with storing the new Hash values (H512, H412) of the replacement camera module or the replacement camera pod assembly. <EOS>