ChampionsAutoWash
New member
I have a 2016 WSII with no POS or Sierra system. I know I can use VIP coupons and codes for free promo washes but I get anything to work right. I have the MEI bill validator, the M5 VIP coupons bought from Unitec and followed the steps from tech support but the coupons are not doing anything. I think my issue is locating this blue button to have the bill validator accept the coupons. Anyone else use these??