When the light switch is turned off and the key is not in the ignition, the E91's nearside headlight will remain on.

[WhisperingWillow]

I may have a rodent problem because I live in the country. I removed the earth terminal from the battery since I couldn't figure out which fuse was for the headlights, but I was intending to remove it as part of the diagnostic procedure. I can't believe it. Aside from the nearside headlight, everything else is turned off.

[nickoyster4]

Have you double-checked that the parking lights are off?

[nickoyster4]

 

[WhisperingWillow]

Don't you think the parking lights are like little angels' eyes? front and rear, I would anticipate them. This particular headlamp is exclusive to the front side. Please, someone, tell me how to find the source of the issue. To begin, I was going to remove the fuse. I believe it's fuse no. 9, but the board doesn't have any numbers, so a diagram would be helpful. It appears that there is a short somewhere, and it seems to be affecting only the nearside headlight. This means that it has passed the point where the power is divided between the offside and nearside headlights, which is normally after the switch in the cabin. However, it is clearly avoiding this switch in some way. thought-provoking issue.

[Rudy7831]

https://fuse-box.info/bmw/bmw-3-series-e90-e91-e92-e93-2005-2013-fuses-and-relay/amp

[Rudy7831]

A code scan wouldn't hurt, because I'm leaning toward the idea that the FRM module is at fault with the problem you've described.

Instead of having separate feeds for each light, the switch instructs the FRM to do what you want, and the FRM acts accordingly. This is how headlight feeds were originally implemented in older automobiles.

[WhisperingWillow]

That's great, thanks. I will check for defects. He had intended to sell the automobile, but plans fell through, so it sat in a field for a year. I drove her home (250 miles) without any problems, except for the brakes binding (which are now solid, but that's another story). However, when I started her up a few weeks later, a mouse came out from under the windscreen and between the bonnet, wiped his whiskers and then vanished. that's why I'm concerned about rodents. Are the nearside and offside headlights fused independently, or do they get different feeds from the FRM?

[Rudy7831]

Instead of having separate fuses for each light, the FRM is protected by a number of fuses.

[ENVIOclev]

Standing automobiles are often plagued by rodents, which love to nibble on the cables, haha.