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Saab
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2003
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9-3 SE, Standard
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Repair and Diagnosis
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Accessories & Equipment
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Exterior Lights
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Exterior Lighting (Late; 9440)
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Technical Description
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Brake light switch (29)
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Principal use
Principal use
Brake light information is used by the control module to:
Disengage cruise control
Limit fuel when idling
Allow for vehicle speed signal diagnosis.