Is it possible to switch from 2 wheel drive to 4 wheel drive high whilst driving or do you have to stop, put the truck in neutral and then put into 4high?? The truck in question is a 2004 F150 fx4 off road

Thanks in advance to those of you who answer

Clanmac

Is it possible to switch from 2 wheel drive to 4 wheel drive high whilst driving or do you have to stop, put the truck in neutral and then put into 4high?????. The truck in question is a 2004 F150 fx4 off road

Thanks in advance to those of you who answer

Clanmac
This site seems to have some owner's manuals:
PDF Search: 2003 ford f150 owners manual online - AcrobatFiles.com (http://www.acrobatfiles.com/find-2003-ford-f150-owners-manual-online.html)
Input your vehicle and see.