Safety device for an electronic board capable of identifying a leakage of aqueous urea solution

A safety device configured to detect a leakage of at least one automotive liquid used in a fluid circuit onboard a motor and/or a vehicle, said automotive liquid containing at least one dangerous substance that is other than water, said device comprising:

• a detection cell, arranged to perceive the presence of the automotive liquid in a dry area which is normally, in the absence of leakage, free from said automotive liquid, said detection cell being sensitive to the presence of liquid in said dry area and to the possible dangerous substance content of said liquid, and
• a selective analysis unit, configured for distinguishing whether the detection cell is in the presence of liquid or not, and in the presence of liquid, whether the present liquid corresponds to the at least one automotive liquid containing the dangerous substance such that said analysis unit can selectively control switching of the safety device from a first mode of operation, corresponding to normal operation without leakage, to a second mode of operation, corresponding to a safety in case of a leakage, when said analysis unit concludes that the automotive liquid is present, and on the contrary maintain the safety device in its first normal mode of operation as long as said analysis unit concludes that liquid is absent.