Found rust in my radiator support to ,not bad yet ,going into dealer next week .
Still under warranty , no beach or salt water driving either .
This second time its been back for rust repairs ...(2012 2.5crd ) ..not impresssed at all.
rust
Also have a look at base of the front and middle pillars where there is a silicon type bead over the joints,my 2012 D22 had rust showing there ,was fixed by dealer after approval from Nissan.
Goodluck.
warning light
im my manual for a 2012 2.5 crd the only icon with a exclamation mark is for a brake warning light ,its a exclamation mark inside a circle?.
may be a low brake fluid warning ?
Hope that helps