Allan Gibbs

I noticed recently that, when stepping on the brake at the stop light, the brake pedal moves closer and closer to the floor (sort of like a deflating sensation). The brakes are holding but it's a strange feeling. Once I start driving and brake again, the pedal's back to normal - unless I keep on the brakes for a few more seconds and then the same thing happens again. So, I'm wondering if I have air in my lines or maybe a leak?

JimInSF

Sounds like air in the lines to me, though I suppose if you were having a catastrophic line failure where the line had developed a stretching bubble this could also happen - definitely something to check out rather than let go, I'd say bring it to the dealer at the moment it's happening and demonstrate.