TIMS showed BCU WSP timeout at FDT car.Fault self-cleared. ~~~~~ 3538 TIMS showed BCU WSP timeout. Fault self-cleared.  3538 found BCU WSP Timeout frequent occurrence. Checked dump v/v on all cars - OK. Brake test - OK.    OPS 20 raised to follow-up.  Kana 44080 To follow up.  3538 BCU replaced & function test - OK. No BCU fault & all brake operation - OK. 3538 BCU S/N : OLD : 1819177 NEW : 1816164  Chan SW/Hanafi 44081