2022 Land Rover Defender Engine Problems

“Safety Complaint – DC-to-DC Converter Failure Causing Vehicle Shutdown I am submitting this complaint to report a DC-to-DC converter failure that rendered my vehicle inoperable. The authorized Land Rover service department diagnosed a failed DC-to-DC converter. This component is part of the vehicle’s electrical system and its failure caused a loss of vehicle functionality. I was informed the replacement part is on national back order, with an estimated repair time of up to two months. …”

“There were two separate issues. First was the battery dying once 4 months after purchase and again about 12 months after purchase. Both times we were lucky we were not out and about 4 wheeling like we normally do. Second is very recent about 18 months after purchase. Both the coolant feed and return lines to the turbo were leaking bad. O2 sensor came up faulty, as well as PCV diaphragm. This about the 4th serious issue we’ve had with this car. I expected this upon purchasing but got one anyways to try it out for off-roading. More to come soon!”

“This is a serious concern and safety condition. In several occasions while driving at a range from 45-70mph the engine loses power. To the point where it has felt like it will shut off. The inside lighting of the dash dims while the vehicle is in loss of engine power.”

“1) Exhaust Manifold Studs are loosening and/or breaking on I6 engine causing potential CO2 exposure to passengers in the cabin and/or engine bay fire risk. 2) Potentailly yes via CO2. 3) Yes - out of factory warranty therefore had independent service center replace all studs 4) No 5) Not in my case but others on JLR Automotive Forums have heard rattling noises and found broken bolts that fell onto the skid plate directly below engine. *) In attached images below the final picture is of the repaired studs”

“Several times while waiting at a red light, the engine just died, feels like it's connected to the hybrid engine not functioning properly. service said it had to do with battery and they fixed it. It still happened 2 more times after they serviced. Also now car is not drivable, because the steering wheel does not budge/move. Waiting for service to return my call. Is this something that could happen whilst driving? It is very scary when the brand new car keeps failing unexpectedly.”