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Trailer brake controller interior fuse

Discussion in '2.5 Gen Tundras (2014-2021)' started by TRDUkjimbo, Mar 4, 2025.

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Mar 4, 2025 at 12:41 PM

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TRDUkjimbo [OP] New Member

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Jimbo

Hello all. I have a 2019 Toyota tundra Limited crew Max and I’m trying to locate the interior fuse that controls the trailer controller. Online I found it is the ECU Dash IG but there are four of them. Which one is it

TRDUkjimbo, Mar 4, 2025

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Mar 4, 2025 at 1:36 PM

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frichco228 Valued Member

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2016 Crewmax 4WD, TRD Offroad

Eibach Pro Truck Stage 2 suspension, HD RAS, 285/75-18 Nokian Outpost AT, LoPro bed cover, TRD rear sway bar, DD 10 inch exhaust, and various other goodies

Vehicle before aug 2017 there are actually two fuses. There is a 40A fuse in the engine compartment marked TOW BRK and a 7.5A fuse #1 in the interior fuse box marked ECU-IG
After aug 2017. 30A fuse same place and a 5A #2 in the interior fuse box marked ECU-IG1

frichco228, Mar 4, 2025

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Mar 4, 2025 at 2:36 PM

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1lowlife Toxic prick and pavement princess..

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You can always find these diagrams here thanks to @RainMan_PNW

Ultimate TUNDRA Wiring Diagrams Collection | Toyota Tundra Forum

Last edited: Mar 4, 2025

1lowlife, Mar 4, 2025

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Ruggybuggy, frichco228 and 00h2itr like this.

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