Originally Posted by Jayy32 (Post 3448328)

Hello everyone I’m new to the forum I’m lost at this point and looking for experience knowledge around here ��

So its a scion frs 2014
I’ll start off like this i was installing fog lights and connecting them to my side marker lights left them on for about 2 minutes and all of my lights headlights , side markers and rear lights does not turn on. Disconnected the fog lights and left everything how it was. Checked fuses, relay and nothing is there something I should check?

None of my lights turn on at all and when i try to turn my lights on the beeping noise comes on as if i took the keys out the ignition and left the lights on even though they are off. My cluster shows the high beam light on and the cluster light is on when i close the door. The beeping nose is off when you close the door.

I’m at a lost can anyone please help me out or where should i start looking first. Sorry if I’m not clear enough

Originally Posted by humfrz (Post 3448442)

Hello Jayy32 and welcome to our forum - :clap:

Are you sure you checked ALL of the relevant fuses?

Did you check the two BIG fuses on top of the battery?

Come back.

Originally Posted by Jayy32 (Post 3448632)

Thank you brother, I have checked all the fuses and the two big fuses someone mention it could be the bcm is there any way to test if the bcm is fried?

Originally Posted by humfrz (Post 3448646)

Oh, my, checking the BCM is waaaay over my pay grade - :sigh:

I'll summon ol @Tcoat for you to see if he has any ideas.

Originally Posted by Jayy32 (Post 3448705)

I would like to be sure that the bcm is fired , is there any chance to check it?

Originally Posted by Tcoat (Post 3448715)

Will need to be able to check and read codes. You will have a communication error code if BCM is screwed.

Originally Posted by Jayy32 (Post 3448777)

So in order to find out if the bcm is fired I would need a computer? What would cause all my lights to not work all my dash lights are on. I had someone checked out i have no idea what he did but he was under the driverseat and the side marker turn on but they didn’t turn off unless i disconnected the battery. He said he will check it out later today or tomorrow he’s gonna do some research. I’m definitely at a lost here

Originally Posted by Tcoat (Post 3448782)

The BCU controls all the sub systems such as lights. If it is fried then they are not receiving the commands they need to work properly. Really no way to physically check it so yes you need a code reader. You probably shorted something out when installing the fog lights and damaged the bcu. Odd that you didn't blow a fuse though. You did check both fuse panels (in the car and under the hood) right? Some people have missed that there are two.

Originally Posted by Jayy32 (Post 3448792)

Yessir i have checked the one under the driver seat and the outside fuse box double checked all my relays and fuses and nothing. I seen a bcu they are selling its a 2015 though will it fix the 2014? Would it be a plug and play if i remove the old one and put the new one in?

Originally Posted by humfrz (Post 3448831)

Let's see if ol @steve99 has any ideas - :popcorn:

Originally Posted by Jayy32 (Post 3448880)

Appreciate the help brother if this 2015 bcm fits the 2014 and if its plug and play I’ll order it and get it out the way to see if thats the problem.

Originally Posted by Jayy32 (Post 3449459)

Bump any ideas ��*��