ACURA: REAR WHEELS HOWL OR GROWL. SOME REAR WHEEL SENSORS MAY HAVE BEEN IMPROPERLY INSTALLED, ALLOWING MOISTURE TO ENTER THE REAR HUB BEARING UNIT. IF THE NOISY HUB BEARING UNIT IS RUSTY, REPLACE IT AND THE WHEEL SENSOR. IF THE NOISY HUB BEARING UNIT IS NOT RUSTY, REPLACE JUST THE HUB BEARING UNIT. *PE