2005 SAAB 9-5 Engine Problems

CHECK ENGINE LIGHT WAS SPORADICALLY ON FOR ABOUT TWO WEEKS. ON 7/14 COOLANT LEVEL LOW INDICATION CAME ON. COOLANT RESERVOIR WAS EMPTY. FILLED, STARTED ENGINE, COOLANT LEAKED IN A STEADY STREAM FROM THE CAR. TOWED TO DEALER. DIAGNOSED IGNITION CASSETTE AS FAULTY AND WATER VALVE (PART SERVICING HEATER CORE) AS FAULTY AND THE SOURCE OF THE LEAK. CHECK ENGINE LIGHT WAS DUE TO IGNITION CASSETTE. GOOD THERE IS A WARNING, BUT IT COULD BE MORE SPECIFIC, AS FAILURE OF THIS PART SHUTS DOWN THE ENGINE. WATER VALVE LEAK COULD CAUSE OVERHEATING. BOTH PARTS ARE CRITICAL AND FAILURE IN A CAR WITH SO LITTLE MILEAGE IS UNACCEPTABLE. THE IGNITION CASSETTE FOR MODEL YEARS 1999-2002 WAS RECALLED DUE TO OVERHEATING. THIS WAS REPORTEDLY FIXED. NOW THE PART THAT HAS FAILED IN A FAIRLY YOUNG CAR IS NOT AVAILABLE THROUGH NORMAL CHANNELS (SAAB PARTS USA) AND SHOPS ARE CHARGING INFLATED PRICES FOR THE...