AC, not cooling enough?

[Bayer]

Apart from getting the pressure tested to see if the gas is full, is there anything else I should check that may make my AC not cool as much as I think it should.

Thanks

[tabo]

What year ML do you have.. you seem to have the most problem ML in this forum LOL.. either its bad luck or you got a lemon! perhaps your car needs to recharge the refrigerant.