Car Acting Weird After Removing Negative Terminal

[donmayor]

hello Fellas,

I needed to replace the oil pan. i disconnected the negative terminal because i have a two wheel air suspension and didn't want the suspension moving to compensate for when i jack up the front of the car. anyway after a couple of hours and when i was finished, and connected the negative terminal, the car WON'T START and was asking for a code.

i research online and disconnected the positive for 5 mins, and connected it again, put the car in position 1 for 10 mins and started the car. and now the is reading in celsius.

my question is, should i not have disconnected the negative terminal?