Ignition key turns on, but dashboard light does not turn on?

MALLYBOY

MEMBER
2007 FORD F-150
5.4L
V8
4WD
AUTOMATIC
23,455 MILES

When you turn the ignition to the on position, it will turn but the dashboard light does not come on. I have checked all fuses and all checks okay, what could be the cause?

Wednesday, May 8th, 2024 AT 8:25 PM

5 Replies

JACOBANDNICKOLAS

MECHANIC
109,747 POSTS

Hi,

Does anything electrical work on the vehicle? For example, do the brake lights turn on when you press the pedal?

Do me a favor. If nothing is working, check to see if the fuses in the CJB have power to them.

Let me know.

Joe

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Thursday, May 9th, 2024 AT 8:07 PM

MALLYBOY

MEMBER
309 POSTS

No electrical work done.

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Friday, May 10th, 2024 AT 12:18 AM

JACOBANDNICKOLAS

MECHANIC
109,747 POSTS

Hi,

If nothing is working, confirm there isn't a ground problem from the battery. Additionally, check if any fuses in the CJB fuse box have power.

Let me know.

Joe

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Friday, May 10th, 2024 AT 7:35 PM

MALLYBOY

MEMBER
309 POSTS

There are power on the most fuses there.
If you plugin the battery terminal, the two headlamps will lit as if there's a module that is not communicating.

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Friday, May 10th, 2024 AT 10:32 PM

JACOBANDNICKOLAS

MECHANIC
109,747 POSTS

Hi,

If the CJB doesn't have power to everything, chances are that is where the problem is. I would remove it and inspect the wiring behind it. The headlamps could be getting power via a short to power.

If you want, connect the battery so the lights turn on. Remove the fuse for the headlamps and see if they turn off. If they don't, we have a short to power likely in the box or behind it.

Let me know.

Joe