Service Description The recurring compression, expansion, and circulation of the refrigerant through the system can cause stress on the Mercedes Benz vehicle eventually if it isn’t maintained properly. If you notice that the AC isn’t getting as cold as it used to, then you may have a leak. One reason your Mercedes Benz vehicle’s AC may not get too cold is a leak in the system. If you decide to try to fix the leak yourself, you’ll need to be very careful because no one is quite sure how much refrigerant was lost. AC refrigerant comes with oil in it and adding too much may cause the compressor to run inefficiently or create leaks again from excess stress. If you don’t add enough then the AC compressor might get too hot or have a mechanical failure. Because of that, it is wiser to go to Mercedes Benz specialists like Cell Auto Repair Abu Dhabi for any MB car repairs or servicing necessary.