TIMS showed Fire Internal at car 2508. Staff(AMK) checked and confirmed no signs of smoke / fire / b urning smell on exterior or interior of train. Train was esc orted to terminal station. TIMS showed Fire Internal at car ~~~~~ 2508 TIMS showed Fire Internal. Staff(AMK) confirmed no signs of smoke/fire/burning smell on exterior or interior of train. Train was escorted to terminal station.  2508 C720 smoke internal.    Checked no.1 end smoke detector no signs of dust/water ingress. Swapped SDR1 from #2508 to #2507. Ops20 raised to check no.1 end internal smoke detector.  Aliff/Daniel/Redzwan 45264 BSD: To check no.1 end internal smoke detector  2508#1 end smoke detector for smoke internal preventive changeout and function test ok 3508 smoke detector notif to csc:2551132 Done Saini/Asruddin/Haslan 45273