Reset AC?
 

Ok so I replaced the evap temp sensor and regulator sensor. I recharged the freon. The EC light stays on still, unless I hold down EC and Rest. After holding them for a few seconds the compressor comes and the AC works fine. The climate screeen flashes 80 and 01. I assume this some stored code. The thing is after turning off the ignition the EC comes back on. I can't figure out how to erase the codes. I pray someone knows how. The only information I have found is for dual climate control units which mine is not. By the way this is a 98 C280. Thanks in advance for any info which will help me.