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Preventing Pre-Collision Warning of 2018 Toyota Highlander After Brake Controller Install  

Question:

Just installed a Redarc brake controller, and now I have a precollision warning when Pressing the brake button down. I notice answer to a question about a reliance brake controller install, that a diode could be install. Would that work for the Redarc? Which wire and which direction would the diode need to be installed?

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Expert Reply:

For your 2018 Highlander and the Redarc brake controller # RED44FR you'd need to install a diode on the red wire of the brake controller to prevent voltage from back feeding on your brake light circuit. For a diode you could then use the part # RM-690.

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Jameson C

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