hw can i fix my alarm,central lockn?

my 2000 model vw golf is unable to lock usn d key n alarm cant b actvated wid key everything s strtn but d windows wont unlock al displays eg if fuel s low it wil show a sign n if d door s open d lite wil b on n it wil b displayd wen drivn if sumthings not rite but nw we drive witout any warning signs pls help