Which Fuse in 2019 Toyota Highlander Is Used for PK5231201 Battery Isolation Solenoid

Updated 01/12/2022 | Published 01/08/2022

Question:

Is there a ACC powered fuse in the 2019 Toyota Highlander LE V6 AWD engine fuse box that I can tap to trigger a battery isolation solenoid or relay so that trailer AUX power is only available when the vehicle is turned on? If not do you have other suggestions to accomplish the same thing? I dont want trailer AUX power to be hot at the trailer connector when the vehicle is off.

asked by: Charles G

Expert Reply:

Any ignition powered circuit can be used to trigger the # PK5231201, but most folks use the radio fuse. The online copy of the owner's manual doesn't provide a listing showing which fuse does what, but the lid of the fuse box will have a diagram listing which fuses protect which circuits. Once you locate the fuse, go to your local auto parts store and get a fuse tap that's compatible with that type fuse. The center post of the battery isolator would connect to the fuse tap.

expert reply by: Mike L