The last generation of the Jaguar had a massive factory problem. One of several electronic control modules on the HID headlights used to keep shorting out in some way or the other every time there was some sort of power surge, such as when your battery dies or sometimes even randomly, maybe once every two years. This used to cause the auto-levelling function to go stupid, making the headlights point permanently downwards even though they are perfectly working fine otherwise (while flashing a warning light in your gauge cluster permanently as well). Oddly enough, the warning light was for the turning-headlights feature,
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