Have checked the specs on the rear pads and the measured about 4mm. The wear sensor was supposed to come on at 3mm but I changed the rear brake pads anyhow.

I did check the front pads and seem to have about 9mm (without backing plate) left also checked the sensor to make sure I had a tight fit in case it was a moisture issue.

It all seems fine.

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Norm K.
'97 E420 Sport
'06 E350 Sedan
'67 Mustang Coupe
'70 F-250
'15 VW Jetta