Thank youAssuming fuses are all ok, the compressor will engage only if system pressure is within certain range, so it might be pressure switch. However many cars leak either slowly or fast if it was physical damage. You could just have it regassed and see what happens, or find the leak. My ‘04 9-5 needed a regas annually and I finally bit the bullet and got a specialist to find the leaks. It required compressor o-rings and a new condenser+dryer. So your choice is a short term temporary solution, or a proper fix!