AO Silver Member
Join Date: Aug 2013
Location: Russian Federation
County: St. Petersburg
Remap required uploading/downloading ECU program.
It normally needs from half hour to two hours time than car is switched on.
Mappers normally put a charger to maintain battery for this period since it would be not good if ECU loading interrupts because of battery. So, can remap drain battery ? Yes... Not can only, it actually do especially mapper leaves car switched lights, radio, airco on for this period.
Battery is to be charged again. Remap makes no affection to sleep mode.