Land Rover Discovery 2015–2017 — technical service bulletin
Bulletin SSM74193 · NHTSA communication 10153048 · issued Dec 19, 2018
Technical service bulletin
communication type
Exterior Lighting
component
2015–2017
model years
3
vehicle entries
Official summary
A very low number of customers may express a concern on headlamps which are fitted with Halogen or HID bulbs. The headlamp lens appearance may show signs of micro cracking. See figure 1 attached.
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.