Hi Nognar it looks like from your picture that the valve block on your car simply has the motor missing, it is a magnetic drive to the impeller it's a pain to get off i removed the ecu box. many owners just disconnect this and are happy with the results.But i love this feature if parked waiting for someone or get out of the and i may be getting back in. it stays on for about 10min keeping the inside toasty and windows clear. so i'd fix that myself but its your choice.
But i suspect 40c to 50c upto the matrix isn't hot enough i would expect the temps to be upto 90c as the heater gets water that's split circulated near to the exhaust valves for faster warm up. I'll try and check mine so you can check. Dave
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2002 S8 silver with black half leather
2000 d2 S8 in Racing green pearl, RS4 manual gearbox,
2003 A4 avant TDi
1997 Volvo V40 2.0T
1992 Mazda eunos v spec
1976 Reliant Kitten
1965 Porsche 911
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