<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Hart1:
"With the Vehicle traveling less than 40mph, press and release the four-wheel high or four-wheel low lock button.....the ...light....will remain on when the shift is complete."
However, the very next page states:
"Shifting into Four-Wheel Low Lock"
"...the ignition must be in Run and the vehicle must be stopped or moving less than 3mph, with the Transmission in NEUTRAL...."
</div></BLOCKQUOTE>
IF that is what your manual states then it is a typographical error. You can shift between 4HI and 4HI LOCK while traveling at 40 MPH or less. However, when switching in or out of 4LOW LOCK you should be in neutral and stopped or rolling less than 2MPH.
If you try to switch into 4LOW LOCK without being in neutral the light should blink but then return to 4HI indicating that you cannot switch without being in neutral.
The warning given is that while you are switching into or out or 4LOW LOCK while in neutral you should not put the transmission in gear until the switch is complete or damage may occur.
Check this link
http://www.elcova.com/h2/details.html to see pdf version of the manuals and shifting instructions.