That's because the lights not only light up to mark the corners, the light
up even brighter to alert other drivers that you intend to turn. The Single
Filiment type bulbs are not the right ones.
>I have a 740iL and just replaced the front and rear lenses with clears
> lenses. At first I got the "Check Side Lamps" message. I checked the
> seating of the bulbs and even disconnected the battery. In looking at
> the front bulbs I found they were single filament not double filaments
> like the original lights. When I replaced the bulbs with double
> filaments the message disappeared.
rwdbmw - 15 Feb 2006 12:22 GMT
Got the lights from Bavarian Auto, didn't occur to me at the time that
they would send me single filiament lights until I checked.