BMW E90 adaptive xenon headlights not turning
E90E91
Why do the adaptive xenon headlights on an E90/E91 not turn?
A common cause is moisture inside the headlight. Water usually gets in through the bulb cover if the cover's clips have failed or the cover has been left slightly open. Water can damage the control box that steers the light's swivel.
Does the swiveling light work in every position of the light switch?
No. The swivel function works only in the Auto position of the light switch, not in the ON position. When stationary, depending on the coding, the light moves in only one direction or not at all, and when driving it moves in both directions.
What does it take to fix a Cornering light failure error?
The fault is often in the control box. Each headlight unit has its own control box, screwed inside the unit. A new headlight unit or box must be coded to the car. Before replacing, check whether water has got into the unit.
Related articles
BMW E90 ABS sensor and wheel speed signal faultBMW E90 ABS unit replacement and fault codesBMW E90 battery replacement: registration and codingBMW E90 automatic transmission adaptation resetBMW E90 automatic transmission jerks when coldBMW E90 front camber adjustmentBMW E90 Comfort Access key and antennasBMW E90 diesel: particulate filter regeneration does not start