2006 Volkswagen Polo electric

When I use my polos flikkers in came on only twise and stop working outside but keeps on flikkering fast inside the dealer told me the flikkers using only one relay and it is sealed inside the hazard switch unit after buying the switch unit for R570 I discover that it is not the problem because without the switch the flikkers still does the same. Is there another flikker relay and where is it installed