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 DIAGNOSISACCESSORIES & EQUIPMENTWIPER/WASHER SYSTEMSWIPER SYSTEM AND WASHER SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDTC B3873CIRCUIT/SYSTEM VERIFICATION
2013 Buick Regal Turbo Premium, Standard Trans
Circuit/System Verification
2013 Buick Regal Turbo Premium, Standard TransSECTION Circuit/System Verification
- Ignition ON.
- Verify the scan tool Windshield Washer Switch parameter changes between Active and Inactive when pressing the windshield washer switch.
- If the parameter does not change
Refer to Circuit/System Testing - Windshield Wiper/Washer Switch Malfunction .
- If the parameter changes
- If the parameter does not change
- Verify the scan tool Instrument Cluster Washer Fluid Level Switch parameter changes between Open when the fluid level is full and Closed when the fluid level is low.
- If the parameter does not change
Refer to Circuit/System Testing - Windshield Washer Fluid Level Switch Malfunction .
- If the parameter changes
- If the parameter does not change
- Verify the Windshield Washers turn On when commanding the Windshield Washer Relay Active with a scan tool.
- If the Windshield Washers do not turn ON
Refer to Circuit/System Testing - Windshield Washer Pump Malfunction
- If the Windshield Washers turn ON
- If the Windshield Washers do not turn ON
- All OK.
RENDER: 1.0x
NO RELATED
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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.