2023-2024 Super Duty 30 minute Idle Shutdown - Fixed... Now High Idle option as well


SDD Junior Member
Dec 2, 2023
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Corvallis, OR.
NEW Idle On PLUS available.
We now offer all the same features of the Standard Idle On unit, PLUS we now have a version that allows you add a switch (Upfitters or aftermarket) and when flipped, your diesel will run about 1170-1200RPM and bypass the shutdown, or if you don't need the high idle right now, the standard bypass feature will take over and allow you to run your rig until YOUR ready to shut if down.

The Problem:
30 Minute idle time shut down. The new Ford Super Duty pickups will only allow the vehicle to idle a maximum of 30 minutes at which point it shuts off.
Even Ford dealerships admit they cannot “Fix” this, or re-program the on-board computer to allow longer idle times.

Who does this effect?
Anyone who needs their vehicle to stay running to power lights, testing equipment, heating/cooling, etc. law enforcement, fire, utility workers, roadside inspection, K9 units, communications equipment ranchers and the list goes on of industries that need to run their vehicle longer than 30 minutes.

Our Idle On! Circuit is a simple device that utilizes the factory upfitters wiring harness and basically fools the onboard computer and tells it to disable the idle shutdown feature.

This device in non-destructive and will not void your factory warranty

This is available in four options:
1) Idle On! Standard or PLUS in You-Wire Version, that you wire into factory SEIC pigtail included in all Super Duty’s (5 wires to connect for standard. 6 wires for PLUS and one wire for 12v switch)
2) You send us your pigtail and we will wire it up to the Idle On! Circuit.
3) Pre-Wired with factory plug (Available in July)
4) We can provide a new FORD pigtail and wire it up also for you (Additional charge)

If you are interested, or know someone who is, or have questions, go to our website for more info. Merlinsfab.com

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