Miele has its reputation to maintain and at their price point it would be reasonable to expect the product will continue trouble free well beyond their 2-year manufacturer's warranty. The question is how long it is reasonable to expect goods to remain trouble free. The two categories of consumer warranty against failure are referred to as major (serious) and minor. Major is unlikely to be applicable here as the item has apparently been working for about 4 years. Minor failure may entitle you to the right to repair and, depending upon the circumstances (and far less likely), to a replacement or a refund. The answer is to contact them and allege a minor failure has occurred, within the period (that it is reasonable to expect trouble free operation) under Australian Consumer Law, given the quality and price of the product. If you speak to someone keep notes of the conversation. You need to request that they repair the product, without charge, under the statutory warranty. If they decline your request, politely suggest to them that Choice will be interested to hear about the outcome as will the Fair Trading Commission in your State. You can only try.