Table 1 shows nine common electrical system related problems of the 2006 BMW 530. The number one most common problem is related to the electrical system (19 problems). The second most common problem is related to the wiring (seven problems).
The insulation on the internal wiring of the headlight (left and right) have fallen off the wiring leaving sections of conductor exposed creating shorts in the lighting system. This is a known problem in the BMW community (owners and BMW) since at least 2011. Read details...
Degradation of headlight wiring. Wire insulation is flaking, cracking, and internal conductor wires are exposed. Causes intermittent headlight issues as wiring shorts during driving. Read details...
Failures of multiple wires/electrical components in the tailgate/rear window wiring harnesses. Search for BMW e61 tailgate wiring problems. The failures are caused by a poor design where the wires entering the hinge guides (4) for the glass and tailgate are repeatedly flexed at a sharp angle until Read details...