Zerocarpileup

Had my radiator replaced recently and noticed the mechanic did not recharge the air conditioning system. Well I noticed the ac will not turn on and stays in off mode even after recharging the ac myself. The system is properly charged but I still get the check next to the ac off. Anyway to reset and resolve?

artim808

AC system has pressure sensor and it will not turn on if the pressure is low. Did you vacuum the system before you recharge it? There is no way the system is properly charged if the compressor is not turning on. You actually need to have compressor running to charge the system.
If you click on the AC on command you will have additional menu where you can turn on the AC.
See attached manual

Zerocarpileup

Yes ac was evacuated with no leaks. But ac will not switch on no matter what. It stays in the off position. Essentially we attempted to fill the system with a small amount to “wake up “ the system in order to cycle the ac on but still nothing.

dlafever

There is a condition where if the refrigerant pressure drops too low the compressor will need to be reactivated via the SDS, this to protect the compressor and system components. I replaced my compressor last year, fully recovered the refrigerant and recharged the system and did not have to reset it via SDS. However I did not operate the A/C with the refrigerant low, I was replacing the compressor due to it making the 'I'll die soon, just you watch' noise.

Just re-read your OP, I wonder why replacing the radiator would cause the HVAC system to depressurize?! I replaced mine and did not need to do so.