Diode for Installation of Brake Controller on 2018 Toyota Highlander

Question

Question:

I have a 2018 Toyota Highlander. RV Dealer installed a TEKONSHA # 90160 Brake Controller. I see this problem seemed to be solved on Tekonsha #90195 using your diode assembly. Is this the same problem on 90160, seems likely that it is ? On my system I get the error message at all times when I connect the trailer cable. Appreciate your answer. Thanks

asked by: Don C

0

Expert Reply:

Yes, you will likely see the issue of the malfunctioning Pre-Collision System (PCS) on your 2018 Toyota Highlander with the Tekonsha Primus IQ Trailer Brake Controller # TK90160. So you can do is the Roadmaster Single Park Light Diode # RM-690.

expert reply by: Kyle S

0

Answer 1

On your 2017 Toyota Highlander, you are experiencing feedback from your brake controller onto that stop light switch which is causing the error messages you mentioned. You will want to install a diode on the red wire leading to the brake controller…

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Answer 2

I checked with Thule and the hardware is available to install the Replacement Fairing Clamp for Thule Canyon Roof Baskets #1500052562. What you need is Carriage Bolt #915-0622-54; if you also need the 3-Wing Hand Knob that is part #753-0783.

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Answer 3

The Pigtail Wiring Harness with Diode for Tekonsha and Draw-Tite Brake Controllers part #7865 is required for a 2019 Toyota Highlander no matter which trailer connector or brake controller you're using as the diode is on the stop light switch…

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Answer 4

The stop light switch circuit on a 2019 Toyota Highlander which will be needed to install a brake controller like the Tekonsha Prodigy P3 Trailer Brake Controller part #90195 can be found by testing the bundle of wires attached to the brake pedal.…

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Answer 5

For some reason Toyota isn't very forthcoming with how to figure out if you have the tow package or not. From my understanding all of the V6 models of the 2019 Toyota Highlander have the tow package but it isn't specified as to what else…

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Answer 6

In order to prevent the ABS error on a 2018 Toyota Highlander when hooking up a trailer brake controller to the stop light switch circuit you need the Pigtail Wiring Harness with Diode for Tekonsha and Draw-Tite Brake Controllers part #7865 which has…

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Answer 7

Yes it is. You'll need the #7865 pigtail that has the diode in the brake stop lamp switch circuit to prevent the controller from feeding back into the vehicle wiring. To install the Tekonsha P3 #90195 on your 2018 Highlander, you'll also need…

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Answer 8

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…

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Answer 9

We have actually run into this issue quite a few times in the past, and there is a simple fix. The reason the Curt Echo Wireless #C51180 locks up the brakes on your camper only at low speeds is due to it being paired incorrectly, usually plugging in…

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Answer 10

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…

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Answer 11

I am not sure which video you are referring to but if you take a look at the 10:45 mark in the attached install video on a 2013 Toyota Highlander, you will see exactly where the bundle of wires are that you will need to tap into for the brake light…

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Answer 12

The newest Toyota Highlander we've installed a brake controller in is a 2014 model. I attached the install video to this page to show you the processs. The 2014 and 2018 Highlanders are the same generation though so what you see in the install…

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