Questions & Answers

Do I really need to cut factory wiring harness in 2021 Highlander Hybrid even with THAR-TOY13?

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I am in the process of installing an EVO-ALL into a Toyota Highlander Hybrid (2021).  I was under the impression the THAR-TOY13 would make this process plug and play as it did in a previous install (2017 Mazda CX-9), however the instructions say to cut Telematics pin #33 and splice a wire to each end, plus tie into pin #4 (starter) for connection A16.  All 3 other T-harness connectdions have been made, do I need to splice?  I may abandon this remote start setup if so since the car has an extended Toyota warranty to 100k miles that could be voided if wires are cut.
asked Mar 6, 2023 in Toyota by Michael Cordivari (130 points)

1 Answer

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Hello,

 

If you are referring to the telematics intterupt, yes this is mandatory and must be done.

 

Best regards.
answered Mar 6, 2023 by derek g (324,940 points)
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