Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBUICK2013REGAL TURBO PREMIUM, STANDARD TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 150 (LIGHTING SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESFRONT FOG LAMPS MALFUNCTIONCIRCUIT/SYSTEM VERIFICATION
2013 Buick Regal Turbo Premium, Standard Trans
Circuit/System Verification
2013 Buick Regal Turbo Premium, Standard TransSECTION Circuit/System Verification
WARNING: This page is about a different car, the 2012 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, observe the scan tool Front Fog Lamps Switch parameter while turning the front fog lamps switch ON and OFF. The parameter should change between Active and Inactive.
- If the parameter does not change between the commanded states, refer to Front Fog Lamp Switch Malfunction in Circuit/System Testing .
- Ignition ON, turn the front fog lamps ON and OFF using the front fog lamps switch. The front fog lamps should turn ON and OFF when changing between the commanded states.
- If the front fog lamps do not turn ON and OFF, refer to Front Fog Lamp Malfunction in Circuit/System Testing .
- Command the All Indicators ON and OFF with a scan tool. The front fog lamps indicator should turn ON and OFF when changing between the commanded states.
- If the front fog lamps indicator illuminates during the test, replace the K9 BCM.
- If the front fog lamps indicator does not illuminate during the test or remains illuminated at all times, replace the P16 instrument cluster.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.