Yes, get the alternator checked.
When the battey goes flat completely, it most likely is a parasitic drain or some electrial component had not been turned off. The PCM would lose all it memory and requires relearning to get back to working properly.
Some highway driving coupled with city driving and returning to the highway again would most probably get the relearn cycle complete.
Wednesday, November 24th, 2010 AT 12:22 PM