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The problem was the glow plug,I removed the heater last weekend and after a strugle managed to get it apart and took out the glow plug,I tested the plug on a battery and it turned out to be dead,I've got a new one from German and Swedish (they keep them in stock) for

Can anyone tell me if the 409.1 software will reset the aux heater,on my 99 Sharan Tdi,if not what do I need to by.Any help would be appreciated