Hey how are you
There is no by pass to the system .
The reason why the ECM and the CIM module around the steering and 2 keys needs replaced BECAUSE BOTH YOUR ORIGINAL KEYS WERE LOST .
IF YOU ONLY HAD ONE KEY LOST AND ONE LEFT THEN YOU REPROGRAM FOR $70 PLUS THE PRICE OF THE KEY .
WITH NEITHER ORIGINAL KEYS , HE CAN NOT ACCESS THE ECM TO REPROGRAM PERIOD .
When they do get the ECM and the keys , he will have to hook up online with Saab Manufacturer to get access codes to activate that ECM and the keys .
I know that is not what you want to hear but that will be the one and best option you have available.
2nd option ,is a used ECM, CIM (located around the steering) and KEY and Ignition switch from a used car ,THEY ALL HAVE TO BE FROM SAME CAR AND INSTALLED IN YOURS
BUT BY THE TIME YOU DO THAT IT COST AS MUCH AS NEW STUFF MAYBE A LITTLE CHEAPER .
Please let me know if the works for you or you have more questions
ASE Certified Technician