Day time running led not working, possible water damage or?

Mar 2, 2025
2
0
Hey all,

So i recently removed the head lamp unit to troubleshoot if the led board was fried as one of them was not working (driver side working, passenger side not working).

I would get an error on my dash saying to check my day time running lights upon turning the ignition on, and at first the led would work sometimes and sometimes it didn’t work. This continued for some months until eventually it stopped working completely.

Swapping the boards around told me it was not the LED board that was broken as it worked on the driver side.

Checking the head lamp connector revealed some corrosion on two of the pins. Does anyone know why this could happen?
 

Attachments

  • DE7E503A-DF74-4FBF-B89B-D81548AA8F2D.jpeg
    DE7E503A-DF74-4FBF-B89B-D81548AA8F2D.jpeg
    282.4 KB · Views: 20
  • IMG_2603.jpeg
    IMG_2603.jpeg
    400.9 KB · Views: 20
  • IMG_2604.jpeg
    IMG_2604.jpeg
    401.3 KB · Views: 20
  • IMG_2605.jpeg
    IMG_2605.jpeg
    408.6 KB · Views: 20
  • IMG_2614.jpeg
    IMG_2614.jpeg
    65.6 KB · Views: 21
  • IMG_2613.jpeg
    IMG_2613.jpeg
    230.6 KB · Views: 22

Seriously?

Active Member
Apr 20, 2018
1,373
949
Hey all,

So i recently removed the head lamp unit to troubleshoot if the led board was fried as one of them was not working (driver side working, passenger side not working).

I would get an error on my dash saying to check my day time running lights upon turning the ignition on, and at first the led would work sometimes and sometimes it didn’t work. This continued for some months until eventually it stopped working completely.

Swapping the boards around told me it was not the LED board that was broken as it worked on the driver side.

Checking the head lamp connector revealed some corrosion on two of the pins. Does anyone know why this could happen?
I would guess that as you suspect, water is getting in. You can clean up the terminals by giving the socket a good spray of switch cleaner
1000004412.jpg
and then 'making' and 'breaking' the connection a few times by plugging and unplugging the connectors to clean up the contacts. Maybe some electrical tape round the join of the two parts of the connector once put back together ?
 
Mar 2, 2025
2
0
I shall give this clean and break in of the switch a go on the weekend, hopefully the weather holds up. Many thanks!
 
Adrian Flux insurance services - discount for forum members.