FYI, top off the fluid after replacing the pads.

When you push piston back into the caliper it forces the fluid back into the master cylinder, and if you have already topped it off it will probably spill out and make a mess...

 

So according to the dealer my front brakes have 6mm and my rears have 4mm (funny I thought it would be the other way around) and they also say my brake fluid level is acceptable, yet I am still having this problem

 

OP any updates on this, as I had the same issue with mine for the first time this morning. I checked my pads and fluid level and everything is normal.