I have Toyota Axio 141 made in 2012. Recently the AC is not cooling optimally in day time.
When internal switch is on , cooling reduces further . But when it's off to get external air, it starts cooling again though it's not optimal.
I showed it to local auto electrical Centre.
There was no gas leak.Compressure was ok.The tubing cools nicely.They suspected a gas block.
They replaced air and gas filters and replaces HFC 134a gas.
Problem still persist. Please help me with advise.