I've had the same oil temp gauge failure problem and many other S4 owners. It started to die then would kick back in then it totally stopped. I bought the oil temp sender from ECS the little one that is supposed to screw into the block. I couldnt find it. If it is where its supposed to as shown it diagrams it would be hidden by the ac compressor. Yet some say the 2.7t doesnt have this style sensor only the 2.8's. So for the 2.7t is built into the oil level sensor in the bottom of the pan. I called audi and they said it has the screw in style. Could someone please help figure out what one it is. And if its the screw it exactly where it is. Thank You.
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