MY WIFE HAS BEEN HIT IN THE HEAD MANY TIMES, AS I HAVE, BY THE 2001 LS 430 TRUNK LID COMING DOWN DUE TO MODERATE WINDS AND JUST PUTTING GROCERIES IN THE TRUNK. THE WEAK TRUNK STRUT CONDITION GETS WORSE OVER TIME, SO WHO ELSE HAS A 2001 TO 2006 LS 430 WITH THE SAME PROBLEM?
This common problem may be caused by "under-engineered" gas shocks that last only two years out of the 5 year warranty. The NHTSA is currently investigating them. Gas shocks can be made to last at least 5 years under normal "grocery shopping/travel" use. So, having to replace them before 5 years is not "normal wear and tear". Dealer replacement cost on mine is $469.64, so they are not so cheap to replace.

Yep, I have the same problem and have searched high and low for universal-type replacements. Not sure how prevalent this problem is, but they have always been weak.