Same noise happened last year and disappeared by itself. Yesterday, I noticed it again. Some online search suggested silicon spray to the rubber grommet behind the brake pedal (where the steering column exits the foot-well). Tried this but no luck. Looks like the noise is coming from the steering wheels not the grommet.
Any suggestion please? Car still has 2 months in the warranty.
(Posted on TLF but thought may be get a wider view here)