[bmwf30//]

i have an f30 328i 2013... i have changed my left rear brake and turn signal at least 3 times in the past year. Can not figure out the issue its usually in sequence i change one and the other goes out a few days later. Sometimes the bulb randomly starts working again but only for a short period of time not sure what the issue is if anyone has had this issue or knows what the problem is plz lmk

[rhmarquez]

Originally Posted by bmwf30//

i have an f30 328i 2013... i have changed my left rear brake and turn signal at least 3 times in the past year. Can not figure out the issue its usually in sequence i change one and the other goes out a few days later. Sometimes the bulb randomly starts working again but only for a short period of time not sure what the issue is if anyone has had this issue or knows what the problem is plz lmk

Don't know if it's the same issue, but on my F32 the left brake light conector shorted out and melted the cable's pin conector as well as the tail light assembly. Apparently a common issue. This was causing intermittent failure of the light, as well as throwing Bulb Failure codes on the panel.

Had to get a new tail light plate assembly and a BMW pin conector kit to re-pin the wires. Repair was a fairly easy DIY and came up around $80.

[dmaxdmax]

You could try a few things that worked on prior bmws I've had...I assume the fundamentals are similar, but maybe not?

First, the bottom tab in the bulb holder can get fatigued and not hold the bulb so firmly...so remove it if you can to try to pull up the bottom tab and bend it up a little higher. Clean the bulb and metal contacts in bulb holder too.

BMW added a new ground directly to the body to fix an issue that I believe was 'really' in the loom going from the trunk lid to the body.

Anyway, sorry...basically all I can suggest is cleaning and tightening. Also, btw, bmw bulbs are better than others usually. Good luck

You could replace the socket itself.

Then, as suggested, it could be a wiring issue. Very common in e46 was a broken wire inside the loom going to the trunk lid--it'd affect the tail

[helix247]

Originally Posted by bmwf30//

i have an f30 328i 2013... i have changed my left rear brake and turn signal at least 3 times in the past year. Can not figure out the issue its usually in sequence i change one and the other goes out a few days later. Sometimes the bulb randomly starts working again but only for a short period of time not sure what the issue is if anyone has had this issue or knows what the problem is plz lmk

Same issue with the added bonus that both sides eventually stopped working with bulb light failure messages showing up on the dash. The two easiest things to check are the wire socket and the bulb socket. A picture was posted showing what a wire short would look like. The bulb socket may required a cleaning where the center tab is lifted upwards so thay it makes better contact with the bulb bottom contact. Also the side walls of the bulb socket may need to be filed/cleaned a bit to make better contact with the bulb base. Once I ruled out that the wiring was not shorted, I decided to replace the bulb sockets. They were approximately $45 USD on FCPEuro each side vs $90 USD each at the dealer. For the age of the car, $90 plus tax seemed like a simple solution. Everything fired up first try. Two months and no issues so far.

[bmwf30//]

Im gonna try all this out thanks guys