Todd2010sop,
I think you nailed it when you thought it was the brake calipers. My 07 OBW LTD does the same thing (160 000 km).
Releasing the brakes allows the pistons to relax, and you're most likely hearing the pads and shims click back onto them, or something similar.
Twice a year I take everything apart, clean and lube as required. I've typically found that as the pads wear, there is usually some groans or clicks that show up when braking. It usually doesn't mean anything is wrong, but (in my opinion) usually has meant that things need another cleaning and lube. Slide pins get sticky or seize, pad end tabs get rusted or dirty enough that they hang up and don't release properly.
Your best approach is to have them inspected and cleaned and lubed if needed. Its much cheaper than replacing parts would be, and may erase your click annoyance. Then again you never know, maybe one of your pads may be separating from its backing plate, or a caliper bolt has come loose or is broken. Get it checked out to be sure. Good Luck!
I think you nailed it when you thought it was the brake calipers. My 07 OBW LTD does the same thing (160 000 km).
Releasing the brakes allows the pistons to relax, and you're most likely hearing the pads and shims click back onto them, or something similar.
Twice a year I take everything apart, clean and lube as required. I've typically found that as the pads wear, there is usually some groans or clicks that show up when braking. It usually doesn't mean anything is wrong, but (in my opinion) usually has meant that things need another cleaning and lube. Slide pins get sticky or seize, pad end tabs get rusted or dirty enough that they hang up and don't release properly.
Your best approach is to have them inspected and cleaned and lubed if needed. Its much cheaper than replacing parts would be, and may erase your click annoyance. Then again you never know, maybe one of your pads may be separating from its backing plate, or a caliper bolt has come loose or is broken. Get it checked out to be sure. Good Luck!