has anyone noticed at times the rear brake (mine is at the passenger rear) clunks when at a stop. it happens when the brake is depressed and when i go to release it. happening mostly on rainy or very humid days...

j

 

Check that your rear calipers are bolted down tightly and that the pads are seated correctly. Also inspect the control arm, sway bar and bushings. sounds like you may have a loose part that is being torqued when the brakes are applied.

My guess is the caliper...

 

Darn you're good ... i didn't see your message until now, @ 7:30 am had my XF on the lift/ rear tires off and on the passenger side... we noticed the whole rear brake assembly could be moved a (nano ) fraction of an inch...

tightened it up and thus far on my short ride back home... no clunking...

Thanx