AC Not Cold Due to Manifold Hose Leak on Mercedes-Benz 190E

The AC system may not blow cold air due to Refrigerant leaks from AC manifold hoses. Leak diagnoses, most commonly using leak detection dye, may be necessary to determine the exact location of any leaks.

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Average mileage: 187,500 (145,000–230,000)
4 model years affected: 1990, 1991, 1992, 1993
6 people reported this problem
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1993 Mercedes-Benz 190E 145,000 mi,
Air condition not blowing cold air
We add freon but air gets warmer & warmer again.