RE: it
The buzzer is supposed to be a warning and is just fine for a failure during operation of the vehicle, kind of scares the heck out of you, though when it happens, been there done that kind of thing. Worked in the woods and backed into a tree stump, which tore the emergency glad hand plumbing. The buzzer scares the heck out of you. Mine has been a sensible beep, beep, beep ever since.
There are many many times when one doesn't need to do the "walk around" when working around the yard without lights etc.
Most people seem to judge the poor buzzer during start up and some vehicles (M656/XM757) actually come with a disable switch for the times when you have to sit in the cab and wait, working on something or whatever.
IMHO, if a phsycological study was done, a continous intense noise (the buzzer) could much more easily disrupt your train of thought compared to an intermittent sound.
Another thing, using a lamp to back up a buzzer in case of failure is not a good idea since the buzzer has a much much lower failure rate than the lamp. There must have been another reason. You can't see the lamp in direct sun light anyway, just look at your turn signal light and think about all the times you have left it on.
Bjorn, over and out