MEMORANDUM **

Helberth Alberto Chavez Merida, a native and citizen of Guatemala, petitions for review of the Board of Immigration Appeals’ (“BIA”) order dismissing his appeal from an immigration judge’s decision denying his motion to reopen removal proceedings conducted in absentia. Our jurisdiction is governed by § 1252. We review for abuse of discretion the denial of a motion to reopen. Mohammed v. Gonzales, 400 F.3d 785, 791 (9th Cir. 2005). We dismiss in part and deny in part the petition for review.

We lack jurisdiction to consider Chavez Merida’s contention regarding equitable tolling of the motion to reopen filing deadline because he failed to exhaust this contention before the BIA. See Tijani v. Holder, 628 F.3d 1071, 1080 (9th Cir. 2010).

The BIA did not abuse its discretion by denying Chavez Merida’s motion to reopen as untimely where Chavez Merida filed his motion more than four years after his in absentia removal order was issued, regardless of whether he was subject to the 90-day or the 180-day filing deadline for motions to reopen. See 8 U.S.C. § 1229a(b)(5)(C)(i), (c)(7)(C)(i). Because this determination was dispositive, the BIA did not need to reach Chavez Meri-da’s remaining contentions.

In his opening brief, Chavez Merida fails to raise, and therefore has waived, any challenge to the BIA’s determination that notice of the hearing was sufficient. See Tijani, 628 F.3d 1071 at 1080.

We reject Chavez Merida’s contention that the BIA’s decision was ambiguous or unclear. See Najmabadi v. Holder, 597 F.3d 983, 990 (9th Cir. 2010) (the BIA need *593 only “announce its decision in terms sufficient to enable a reviewing, court to perceive that it has heard and thought and not merely reacted” (internal quotations omitted)).

PETITION FOR REVIEW DISMISSED IN PART; DENIED IN PART.