# Timed output after key off

**URL:** <https://community.ecumaster.com/t/timed-output-after-key-off/5771>\
**Category:** PMU\
**Created:** [May 11, 2026, 2:24am UTC](https://community.ecumaster.com/t/timed-output-after-key-off/5771 "2026-05-11T02:24:58Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![519Kustomz](https://avatars.discourse-cdn.com/v4/letter/5/a88e57/32.png) [@519Kustomz](https://community.ecumaster.com/u/519Kustomz)\
**Post date:** [May 11, 2026, 2:24am UTC](https://community.ecumaster.com/t/timed-output-after-key-off/5771/1 "2026-05-11T02:24:58Z")

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Has anyone been able to have a timed output keep running after the ignition it turned off? It’s for something different, but let’s say I wanted a cooling fan to run for 1 minute after key off. Does the entire pmu shutdown when key is turned off or can I have an output programmed to a timer continue running until timer is done? I have timer function working for other outputs but haven’t figured out the key off part.

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**Author:** ![Maciej.Ordowski\_ECUMASTER](https://avatars.discourse-cdn.com/v4/letter/m/e495f1/32.png) [@Maciej.Ordowski\_ECUMASTER](https://community.ecumaster.com/u/Maciej.Ordowski_ECUMASTER)\
**Post date:** [May 11, 2026, 7:03am UTC](https://community.ecumaster.com/t/timed-output-after-key-off/5771/2 "2026-05-11T07:03:44Z")

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Hi,

there is a “Delayed turn off” panel in PMU, where you can configure it. You can add a panel using F9 key.

You can also make some logic to wait for the delay or not:

 ![obraz](https://europe1.discourse-cdn.com/flex013/uploads/ecumaster/original/2X/2/2ad7a91704a8be4f9be4bf54aacfa95da77b51e4.png)

Check out the 16.7 chapter in the manual.

> **[PMU\_Manual.pdf](https://www.ecumaster.com/files/PMU/PMU_Manual.pdf)**
>
> 26.27 MB

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<div class="post-metadata">

**Author:** ![519Kustomz](https://avatars.discourse-cdn.com/v4/letter/5/a88e57/32.png) [@519Kustomz](https://community.ecumaster.com/u/519Kustomz)\
**Post date:** [May 11, 2026, 12:47pm UTC](https://community.ecumaster.com/t/timed-output-after-key-off/5771/3 "2026-05-11T12:47:58Z")

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Thanks! That keeps the entire pmu on and I’d like to only keep one output running. I’m trying to keep a bms powered up for a certain amount of time after the car is shut down. But only want the bms to be powered.

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<div class="post-metadata">

**Author:** ![mkuklis\_ECUMASTER](https://dub1.discourse-cdn.com/flex013/user_avatar/community.ecumaster.com/mkuklis_ecumaster/32/104_2.png) [@mkuklis\_ECUMASTER](https://community.ecumaster.com/u/mkuklis_ECUMASTER)\
**Post date:** [May 12, 2026, 9:57am UTC](https://community.ecumaster.com/t/timed-output-after-key-off/5771/4 "2026-05-12T09:57:28Z")

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There is no option like that.  
The whole device is either switched on or off.

But from your description, I don’t see why the available feature is not enough.  
When you switch the ignition off, you can keep the PMU on for a specified duration and have only the BMS output active. After the delay, the PMU is switched off completely, along with the BMS.