I found it near the windshield wiper fluid bottle on my '04 D2.
PS: Check your serpentine belt. I replaced mine as typical maintenance today (51K mles), and it was split through all the ribs in several places, and into the 'backbone' of the belt.
PS: Check your serpentine belt. I replaced mine as typical maintenance today (51K mles), and it was split through all the ribs in several places, and into the 'backbone' of the belt.