How to Install the Tekonsha Prodigy P2 # 90885 on a 2018 Toyota Highlander

Question:

How to install a brake controller on a 2018 fwd Highlander Limited. Had a Tekonsha p2 installed and a bunch of diagnostic warnings appeared. Towed to Dealership and everything was taken out wires and controller and warnings reset. Best way to install brake controller. Please advice. Thank you.

asked by: Eli S

Expert Reply:

If you didn't have anything on your 2018 Toyota Highlander you would first need to start off by installing a 4-Way like the Hopkins # HM11141825 if you have the factory tow package or the Tekonsha T-One # 118449 if you don't have the factory tow package.

The next step is installing the Universal Wiring Kit # ETBC7 which will give you a fully functional 7-Way and the appropriate wiring for your Tekonsha Prodigy P2 # 90885.

Once the wiring from the ETBC7 is run to your cab and the battery you then need to connect the following wires to the following functions:

Black - 12V Battery (with 20A breaker 6" from battery)
Blue - Brake Controller Pin on 7-Way
White - Ground
Red - COLD Side of Stop Light Switch (only gets hot when brake pedal is pressed)

You can use a circuit tester like part # PTW2993 to find the correct wire for your stop light switch. Please note: Do not disconnect the brake light switch on Hybrids unless battery is disconnected, or ignition is in the off position or else you may set off a code in the computer system that limits the vehicle's motion.

If you get some weird codes after installing the P2 then you may need to have your Highlander flashed.

I attached an installation video of the ETBC7 Kit and the Tekonsha Primus IQ # TK90160 on a 2017 Toyota Highlander that you can follow for the installation of your P2. If you already have the wiring kit ETBC7 installed just jump to the 19:10 mark in the video.

I also attached some helpful articles for you to reference.