Tl* the contact owns a 2018 n/a land rover l560. the contact stated that while driving at approximately 60 mph, the defroster/defogger did not function, making it difficult to neither clear the windshield nor see the roadway. there was no warning indicators. the vehicle was taken to the land rover jackson dealer located at 5320 interstate 55 north frontage rd, jackson, ms 39211, phone number 601-326-5600, where a diagnostic test was performed and the technician upgraded the software. the manufacturer was made aware of the failure and stated that the failure was not a known issue. the failure mileage was about 1,220. before the malfunction of the defroster, the climate control dash starting flickering and went out for about 3-5 minutes. this problem has happen again (jan. 13, 2018) the back and side windows are not defrosting. *dt *as