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 MANUALSVOLVO2009S80 V8REPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROL SYSTEMSENGINE CONTROL MODULE (ECM) - SPECIFICATIONS, OTHERENGINE CONTROL MODULE (ECM) (B6324S2, B6324S4; 2010-2012)DESCRIPTION OF PARAMETERSPARAMETER, STATUSBRAKE LIGHT SWITCH
2009 Volvo S80 V8
Brake Light Switch
2009 Volvo S80 V8SECTION Brake Light Switch
The engine control module (ECM) calculates the value from the brake light switch signal.
Activated = brake light switch actuated.
Not activated = stop lamp switch unaffected.
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.