same issue, no resolution
just wanted to revive this thread to see if anyone has had resolution on the issue.
i have the same issue. i took it to my local shop (non-dealer), and they replaced more than the bulb (i will double check, but pretty sure they did the whole unit).
i still have the problem of it not turning on right away (if at all).
doing the repetitive on-off once i start the car often solves the issue. and i do think it was less of a problem during the summer.