NHTSA campaign 20V143000
Hazard
Jaguar Land Rover North America, LLC (Land Rover) is recalling certain 2017-2018 Discovery vehicles equipped with low line headlight assemblies. When towing a trailer with the trailer lights connected to the trailer socket and the vehicle's Daytime Running Lights (DRL) are on, the trailer lights may not function.
Consequence
If the trailer lights are not working, following traffic won't be aware the vehicle is slowing down or stopping, increasing the risk of a crash.
Remedy
Land Rover will notify owners, and dealers will update the Body Control Module software, free of charge. The recall began April 13, 2020. Owners may contact Land Rover customer service at 1-800-637-6837. Land Rover's number for this recall is N428.
The text above is quoted verbatim from the NHTSA record. Confirm the affected units and the remedy with the manufacturer or NHTSA. Recall data may be incomplete, delayed, or superseded.