DesertDenizen
Well-known member
My new 2012 Leaf makes a humming noise first thing in the morning if I get to around 30 mph and then remove my foot from the accelerator. The dealer said the ABS system does a little diagnostic test when first used in the morning and this may be what I am hearing. I never heard it on my 2011 Leaf. I do not hear it for the rest of the day. It has been getting into the 20s at night here, which is unusual. Any thoughts? It does not seem to be a serious concern, more of an enigma.