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When you start the car, watch what the headlights do. Normally operating headlights dip down, then rise up to the correct position.

Assuming the aim was correct to begin with, then something has been disconnected or the headlights really need calibrating (done with a Tech II).

In fact, a Tech II can let you figure out what's going on a lot quicker than trial and error.
 

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There is also manual adjustment of headlight aim. However, what Saab wants is for you to "calibrate" the headlights. This is done at a normal load on level ground. Calibrated headlights sit kind of in the middle of their auto adjustment travel. Then you use the manual adjustment to get them properly aimed. That way, the headlights can adjust properly up or down from their calibrated position.

Trying to raise up the headlights beyond the manual adjustment range can break the adjustment mechanism, and then you have a nice big headlight-sized paperweight.
 
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