aps921, can bus, chrysler 300

Hi

I have the Audivox Prestige 921, I have had the unit in with no problems for quite some time,however after having the car in the garage for some time with out battery power I had to turn the unit back on agian, because my key fob to my Chrysler 300C stopped working,all I  did was push the valet button in an heard two chirps from the box, the car starts OK, however the ETC light came on in my car,no error codes were found with the ETC only CAN BUS interfearance, the dealer thinks I need to recalibrate the remote start, in other words go through the setting up sequence agian. I had a good idiots step by step, but my dealer has since passed away an I lost the sheet. Does any one have a idiots step by step

For example If I remember you go through the step to put the box in setup mode, then you press the valet button 1 time to get in blank 1 then turn off then on to go to blank 2 then turn off then on to go to blank 3, heres where I am lost

do you press the valet button 7 times to get to step 7 watch for 7 blinks in the valet light wait for a chirp an if you want to get to the 2nd part press the valet button to get 2 chirps press the valet button again to get 3 chirps? then press the valet button 10 times to get to step 10 an do the same thing?

Any advice is welcome

I took the car to the stealership to have the error codes checked, because my ETC light was flashing, they said no error codes were found for the emmissions, only CAN BUS disturbance, they deleted the error. They do not know why or what caused it, I do have a kenwood with a can bus for the steering controls an a audiovox 921 remote start 2 way 1 button.

Any ideas what CAN BUS disturbance is or fix it tips

Thanks