NO, there's no statute of limitations on the warrants.Your first case is a probation violation; on the second case, you have an 'open' DUI (one which you can still take to trial) and they can add another charge to that case, for your failure to appear.You can clean this up by hiring an attorney to accompany you to court. The attorney can try to contact the Prosecutor, beforehand, and attempt to negotiate a plea bargain (many Prosecutors will simply say they will negotiate after you turn yourself in).It's unlikely the court will grant bail, as you failed to appear for court previously, so expect to spend some time in jail until your attorney can negotiate a plea bargain or until final resolution of your case (on your probation violation, you have already been convicted and the standard of proof of a probation violation is very low, so you will probably have to do time on that, even if you aren't convicted of the DUI).Any time you spend in jail pre-sentence, should be credited to your sentence. Your attorney should try to get concurrent sentences (all time served is credited to both cases).