The Mercedes Benz E220 used NipponDesno A/C compressor, it hv a Solenoid Valve,the Valve are not lastnig. the problem with this valve is, it is not working somewhere between 80K Mileage on the road, n the Compressor still in good condition, instead of replace this compressor with $$$, anyone hv come across this problem with solution ? apprecaited.