Troubleshooting Pre-Collision Warning After Installing Brake Controller on 2018 Toyota Highlander
Updated 06/20/2018 | Published 06/19/2018
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Question:
After installing the Tekonsha P3 on my 2018 Toyota Highlander, I receive a Pre-Collision System Malfunction when using the slide switch.
asked by: Pier
Expert Reply:
The issue is the wire you ran the red wire of the P3 part # 90195 to. We've heard from Tekonsha that a 1 amp diode needs to install on this circuit to prevent the controller from backfeeding onto the vehicle wiring. Or you can use the part # RM-690 from us. The "IN" side would point towards the vehicle.
I attached an install video of a brake controller to this page on a 2018 Highlander for you to check out as well.
Product Page this Question was Asked From
Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Splice-In
- Under-Dash Box
- Under-Dash
- Up to 4 Axles
- LCD Display
- Multiple Trailers
- Tekonsha
more information >
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