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What could be the reason for the persistent illumination of the traction control light in the Toyota RAV4?
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★ Top Answer
The Power Control Module is in charge of managing traction control in the Toyota RAV4. If this module malfunctions, warning lights like those for the ABS system or "check engine" could light up. A more common reason for these lights coming on is a problem with the wheel/speed sensors of the Rav4. These sensors can get dirty or contaminated, leading to them sending incorrect data to the vehicle's braking system and PCM, which is linked to the traction control function. It's also important to check the wiring connected to these sensors, as a break or disconnection can cause a similar issue. The cost of replacing the wheel sensors in the Rav4 typically ranges from $350 to $380 in total for parts and labor.
More answers
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If a faulty, dirty, or rusted wheel speed sensor or an issue in the connecting wiring is present, it will hinder accurate data from reaching the traction control system computer. This may result in the traction control not functioning properly on that specific wheel, causing the system to shut down and activating the warning indicator on the TCS.
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