Classic Mercedes Benz diagnostics, consultations, inspections
This page is dedicated to one major problem S-
Many owners of fine Mercedes automobile drive with open windows not because they want to enjoy 100 degree summer air or make other drivers think that they have extremely freezing A/C . Most likely A/C has no refrigerant due to the leaking evaporator core. If evaporator has a leak putting freon for A/C to work for a few days doesn’t make sense. It’s expensive and in many cases doesn’t last long. In some cases, the leak can be elsewhere, but if A/C evaporator has a leak that is one major job to replace it.
When I bought 1990 300E A/C system had no refrigerant in it. I bought the car the end of winter and drove it for few months until one warm rainy day I got stuck in traffic during heavy rain. My windows fogged up and I had to put on the heat to defrost windows. When the outside temperature is 90 degrees and one sits in closed car with heater on, well it’s definitely not cool. I was oven-
When I bought my 1992 500SEL I had to remove A/C condenser and radiator to perform an engine repair. The previous owner replaced A/C compressor and I was anxious to recharge A/C system and get frozen by great A/C performance. I was happy for 2 weeks. One very hot day I noted A/C is not as cold as it was. After inspection and testing same green dye was found under the car indicating leaking evaporator. I thought E-
I heard stories that people paid over $4000 at the dealer to replace leaking evaporator on S-
Since I have replaced many evaporators on E-
Below are some pictures showing some progress