HI , All IM , STEPPA , I OWN A YEAR 2000 XREG SUBARU IMPREZA TURBO . I BOUGHT THE CAR IN JULY 2023 AS A PROJECT IT NEEDS CLEANING UP MAY BE A FULL RETO IN THE FUTURE, NOW I BOUGHT THE CAR DROVE IT HOME AND DISCONNECTED THE BATTERY , I REPLACED THE BATTERY YESTERDAY 18/2/24 WITH A NEW ONE , AND MY "SIGMA" ALARM FOB IS NOT DOING ANYTHING ITS NOT SWITCHING OFF THE ALARM OR IMMOBILISER , PLEASE CAN I KINDLY GET SOME ADVICE ,WHERE DO I GET THE 4 DIGIT KEYPAD CODE FROM AND HOW DO I GET MY FOB WORKING .
THANKS KIND REGARDS

 

did you replace the battery in the fob?