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The ac panel blinking on and off usually indicates that the climate control unit has detected a fault with one of its components.It can also indicate a fault with the climate control head ( the dash control for heater and ac) needing replaced.
What has to be done from here is to have the fault codes read out/checked to see what codes are set in the climate control unit itself.This has to be done using a fully compatible scan tool or computer that will plug into your model to read all computers for any codes set.Once this is done there will be at least one code set that will then need to be diagnosed to then locate and repair this fault.This has to be done to help locate which component is at fault needing repaired or replaced.It is very possible it is low on freon due to a leak needing repaired or that a sensor has failed like the evaporater temp sensor but the codes do need checked to see for sure which is the cause here
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