About 65000 miles on 2013 P3. Just noticed today the engine brake appears to not be working. Was driving down expressway and the car rolled almost like it was on cruise control when I took my foot off the gas. Rolled about half mile before MPH even dropped. Tried the engine brake and the B lights up but not braking. When I got to destination I shut it off for about 45 minutes and tried it again. This time everything seems normal except no engine braking when put in B. Any thoughts?
