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.
BCW Ecu
The BSW (=Blind-Spot Collision Warning) prevents collision by measuring the distance and speed of an object in the blind spots using the blind spot detectors installed at the rearside of the vehicle. It warns the driver (though visual, audio, and tangible alarm) when a rear vehicle coming from the right enters one of the driver's blind spots after computing the possibilities of a collision with the vehicle that attempts to change a lane coming from behind.
The BSW system exchanges information regarding distance from and speed of the upcoming vehicle via reciprocal CAN communication with the radio wave radar installed at the back of the vehicle.
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.