Lots of manufacturers have wired the electric radiator cooling fan circuit to the battery direct rather than through the ignition switch controlled supply.
Cars of this type often have the fan running for several minutes after switching off and the fan can restart again later for a short time as the mass of the engine continues to release heat into the coolant and the thermo-syphon action causes circulation.
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Which blower?
Lots of manufacturers have wired the electric radiator cooling fan circuit to the battery direct rather than through the ignition switch controlled supply.
Cars of this type often have the fan running for several minutes after switching off and the fan can restart again later for a short time as the mass of the engine continues to release heat into the coolant and the thermo-syphon action causes circulation.