(Corrects CEO comment in first bullet point to "not progressing very well")
June 25 (Reuters) - Takata Corp
* Chief Executive Shigehisa Takada tells shareholders internal probe into root cause of failing air bag inflators "not progressing very well", unsure when it would be completed
* CEO to shareholders: dealing with recall situation is top priority, wants to continue leading company
* CEO to shareholders: can't say when recall problems will be solved, but hopes for quick resolution and return to stable dividend payout Further company coverage: (Reporting by Maki Shiraki)