i would be suspicious of fuel filter, also the timing belt can cause this with extensive wear. The air filter is clogged can make it act like no power also. Remember this " do your regular maintenance on schedule and on time and most of the wierd problems will dissapear. "
Power
Because if the KIA sportage has power locks it has or can get a key less entry system
Check your battery
Battery Group Size 58 for: 2000 Kia Sportage, 2001 Kia Sportage, 1999 Kia Sportage
The 2009 Kia Sportage is 5 ft. 10.9 in. (70.9 in.)1 one-touch power windows wide.
The 2008 Kia Sportage is 5 ft. 10.9 in. (70.9 in.)1 one-touch power windows wide.
The 2005 Kia Sportage is 5 ft. 10.9 in. (70.9 in.)1 one-touch power windows wide.
The 2007 Kia Sportage is 5 ft. 10.9 in. (70.9 in.)1 one-touch power windows wide.
The 2002 Kia Sportage is 5 ft. 8.1 in. (68.1 in.)12V front power outlet(s) wide.
The 2001 Kia Sportage is 5 ft. 8.1 in. (68.1 in.)12V front power outlet(s) wide.
The 2013 Kia Sportage is 6 ft. 1 in. (73 in.)1 one-touch power windows wide.
The 2006 Kia Sportage is 5 ft. 10.9 in. (70.9 in.)1 one-touch power windows wide.