2022 1500 Laramie Led fog lights not working

[Vierra96744]

Hello,
Recently purchased a ‘22 Laramie with the factory led fog lights and they do not seem to turn on. Yes the dash light for the fog comes on, yes the high beams are off, no it’s not the cargo bed light (which works), and yes all the other lights work perfectly fine. I also went behind both of the fogs to check the connections which seem to be intact but I haven’t got a multimeter to it yet. While under there I noticed that the parking sensors seem to be running off the same relay harness that the fog lights come and my front sensors have a service required message for them. Could that be why they don’t light up?
Any help would be appreciated. Thank you
Anyone else experiencing this issue?

 

[vincentw56]

Hello,
Recently purchased a ‘22 Laramie with the factory led fog lights and they do not seem to turn on. Yes the dash light for the fog comes on, yes the high beams are off, no it’s not the cargo bed light (which works), and yes all the other lights work perfectly fine. I also went behind both of the fogs to check the connections which seem to be intact but I haven’t got a multimeter to it yet. While under there I noticed that the parking sensors seem to be running off the same relay harness that the fog lights come and my front sensors have a service required message for them. Could that be why they don’t light up?
Any help would be appreciated. Thank you
Anyone else experiencing this issue?

Sounds like there's a problem with the harness further down. If you're getting issues with both the fog lights and the parking sensors.

 

[Wirerat]

There is a big plug on the left (drivers) side of bumper. Park sensor and fog light wires pass through it. It is easy to get to with the small splash shield out of the way or from under the truck.

I would check that connection out. If it's connected. Try disconnecting and make sure all the pins are in order and no debris. Then re connect and test.

 

[Vierra96744]

There a big plug on the left (drivers) side of bumper. Park sensor and fog light wires pass through it. It is easy to get to with the small splash shield out of the way or from under the truck.

I would check that connection out. If it's connected. Try disconnecting and make sure all the pins are in order and no debris. Then re connect and test.

Thank you for the information, I will try disconnecting the main harness as I only disconnected the actual one behind the physical fog light itself. Also forgot to mention the truck is lifted 3.5” and on 35s. I’m pretty sure it’s not calibrated for them. I think I read somewhere that the park sense shuts off if it isn’t calibrated for the tires.
Thanks again

 

[vincentw56]

Thank you for the information, I will try disconnecting the main harness as I only disconnected the actual one behind the physical fog light itself. Also forgot to mention the truck is lifted 3.5” and on 35s. I’m pretty sure it’s not calibrated for them. I think I read somewhere that the park sense shuts off if it isn’t calibrated for the tires.
Thanks again

It only shutoff because the speed isn't calibrated so it thinks the truck is moving faster than it is. ParkSense only works below a certain speed.

 

[Wirerat]

Thank you for the information, I will try disconnecting the main harness as I only disconnected the actual one behind the physical fog light itself. Also forgot to mention the truck is lifted 3.5” and on 35s. I’m pretty sure it’s not calibrated for them. I think I read somewhere that the park sense shuts off if it isn’t calibrated for the tires.
Thanks again

Yes you need to program your new tire size. That wouldn't break the fog lights though.

Maybe that plug was jarred/bumped loose when lift/tires installed. Definitely take a look there.

 

[Vierra96744]

Yes you need to program your new tire size. That wouldn't break the fog lights though.

Maybe that plug was jarred/bumped loose when lift/tires installed. Definitely take a look there.

Unplugged the main harness and tried again, still no luck. Hopefully the whole harness isn’t fried

 

[Vierra96744]

Trying to find a wiring diagram but looks okay to me from the outside

 

[Dougs 2021 Ram]

this is front fascia connector plugs and pin , these are for a 2021 i am not sure if they changed for 2022