unless the car owner manual specified, car battery change should be done with engine off to protect the sensitive circuit but nowaday punya mech act smartass and do battery change with engine on for every car, giving the excuse to preserve ECU memory and when mishap like urs happened, the ECU parameter is wiped anyway. say again, preserve what?? lol

i feel you bro
I encountered that with my myvi too
they said preserve ECU parameter la bla bla
then change half way, aircon compressor kicks in, massive voltage drop and battery is not thr to condition the circuit. GG.. engine died
only then they started to look at each other with stupid faces
got rough idling for a hours, drive like shit also

This post has been edited by N33d: Jun 22 2017, 09:12 PM