Table 1 shows one common exterior lighting related problems of the 1999 BMW 540.
| Problem Category | Number of Problems |
|---|---|
| Headlights problems |
Headlamp internal adjusting rods (brittle plastic material) fail prematurely causing headlamp bean to deflect and lamp beams to shudder or wiggle. This tends to reduce the field of vision for drivers and to blind oncoming motorists.