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Home >> Saab >> 2004 >> 9-3 Linear, Automatic >> Repair and Diagnosis >> Electrical >> Body Electrical >> Control Module >> Technical Description >> AHL control module (664) >> Main task

Main task

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The task of the AHL control module is to regulate headlamp beam length. The control module ensures that the headlamps are always angled optimally during acceleration, braking and with different loads. The control system has two load angle sensors located at the front and rear axles, respectively.