Land Rover Defender lane assist problems

Filed Aug 9, 2026 · Acceleration, Driver assistance · FL

Driving and the steering assistance warning goes off cuts off my cruise control and my lane keep assistance causing my car deceleration on highway promptly while going 70 mph.

Filed Jan 31, 2026 · Electrical · OH

Car only has 42K miles on it- we were driving down the highway at approx 75mph, when the dash alarms started going off indicating an electrical system failure. A few minutes later all systems started flashing failures (lane keep assist system, braking system, etc)....then suddenly the gear box system failure alerted and the gears disengaged, the RPM's shot up and red-lined, and the CAR lost power in the middle of the highway. Fortunately we were able to get off to the shoulder without getting hit by a semi-truck. The car was completely dead. It had to be towed to a dealer, to find out that the DC/DC converter had failed- and these parts have been on back order for months- apparently this is a common issue with these cars, and people have been talking about it online...many have been without their car for 3-4 months waiting these parts.

Filed Jan 22, 2024 · Steering · CA

It happened after being parked at work for 9hrs. The “lane assist not available!” warning came on when I started the car. I noticed the steering wheel was VERY hard to turn. You have to use both hands and lean with body weight to turn the wheel a few inches which when the car is at a stand-still. It did get a little easier if the car was moving. The screen didn’t dim but now I recall, just for a few seconds, part of the cameras on the display screen were grayed out when I put it in reverse. This only happened once for a short time during the multiple engine on/off cycles I tried hoping it would go away. The “20 sec pivi reboot” didn’t fix it (I tried it about 3 times). Walking away and coming back didn’t fix it.

Filed Dec 27, 2023 · Driver assistance, Steering · WA

Lane assistance and power steering failed. There was no warning light or alarm. The warning light in the dashboard came on reading “Lane assistance not available” and “power steering resistance reduced” immediately when both systems failed. We were able to safely park, no one was injured. The car has been at the service center at the dealership for 10 days.

Filed Nov 14, 2023 · Driver assistance, Steering · WI

The power steering failed and the car was not drive-able. The warning light for no lane assist available also turned on. The vehicle was in-operable and left us stranded. This would have been a much bigger issue in the winter time, or if I was not at my home. I contacted Land Rover, who had me call LandRover road side to have the car towed to the dealership, since this occurred on a Sunday. They confirmed the issue of power steering malfunction. There was no warning that his was going to happen. It first appeared when we tried to start the car and it was not drive-able. Once at the dealership, I was made aware there was a service bulletin-not a formal recall- regarding this malfunction. It required two code updates (that I was unable to complete with attempt to update software prior to tow) and a battery reset. With this being such a significant issue, making the car in-operable, it was frustrating to hear it was a known issue that was not a recall. The dealership told me there were others in the area that had the same issue and were fixed, with out recurrent of the issue.

Filed Mar 18, 2023 · Acceleration, Driver assistance · PA

When driving the new 2023 vehicle with 956 miles we got a lane keep malfunction dialogue box pop up on digital instrument cluster. At the same time the power steering ceased to work or the lane keep fought to keep it centered even when trying to make maneuvers to stay in lane of traffic, navigate turns or avoid other vehicle. It endangered the lives of my wife, 3 young daughters and lives of other drivers/passengers on the road. The vehicle was parked about a mile from it occurring and roadside assistance called. It was taken to Jaguar Land Rover Hunt Valley to be repaired. Where they duplicated same issue. They could not get the computer to flag any codes that something was wrong but witnessed it not being able to be steered properly. They proceeded to do a hard reset on the steering module as they could not communicate with it, they then downloaded new software and said it fixed the problem. We drove 3.5 hours round trip to go pick it up. It drove just like is should for trips but then at 1145 miles the exact same issue with dialogue box saying lane keep malfunction and power steering or it fighting my wife to stay straight and fighting her to navigate road turns, obstacles or other vehicles. This again put my family and other families on the road at extreme risk. It was then towed again. This time it went to Jaguar Land Rover Harrisburg. They too witnessed the same issue and I told them of what happened before and what they did to fix. It has been in the dealership service centers care for a week and they can’t figure out why it’s doing it. They contacted Land Rover corporate for help and have open ticket with Engineer. The service managers words to me where that they can’t do anything until LandRover engineer figures out why this is happening to Defenders. I said there is more, he said yes. I called corporate to request they take the vehicle back as it is unsafe for my family and other families in the road. They said it has to happen 3 times! Not Safe At All.

Filed Dec 13, 2022 · Steering · CT

Went to turn on vehicle and experienced a complete shutdown of power steering system. Lane assist not available message was the only error presented.

Filed Apr 5, 2022 · Driver assistance · CA

Regarding the lane departure feature, there has been a number of occurrences while operating the vehicle during daylight conditions where the system erroneously triggers causing the active steering system to engage and induce swerving. No recalls or service bulletins by the dealer have been posted regarding this issue and no system warning indications have been present. More than likely, misreadings by the vehicle’s sensors during less than ideal optical conditions could be the root cause. Regarding the parking collision system and more specifically, the onboard cameras (front and rear) on the vehicle, the visual output of these is distorted when viewing using the onboard display. Distorted here implies a fisheye lens type or effect which makes it extremely difficult to gauge distance and accuracy of vehicle track when parking or navigating tight spaces. Additionally, the rear parking camera suffers from very poor resolution during night conditions rendering it useless. These concerns were raised via the local dealer after initial purchase of the vehicle, however, no relevant technical service bulletins or recalls were discovered.

Filed Jan 24, 2022 · Driver assistance, Steering · NV

Power steering failed upon starting the car after 12 hours of non use. The lane assist light came on saying it was unavailable. Upon first starting it did not move in drive or reverse but was able to after a few restarts but the steering was still failing. I am worried about the steering failing while driving.

Filed Dec 23, 2021 · Driver assistance, Steering · PA

I started my vehicle as usual, everything looked ok except “lane assist not available!” was showing on the driver's screen, and when I wanted to drive away, the steering wheel was unresponsive, but I could drive the vehicle forward and in reverse. Also, the main interactive display was slightly dimmed. I tried a couple of restarts (engine off, lock and leave for 30mins) to no avail. I called Recovery and they delivered the car to the Dealership who undertook several tests but couldn't locate the problem; rebooting some of the connections worked (see attached detail photo from their report). I asked if this could happen at high speed, and the service manager's response was "I'm gonna say no". To your Guidelines: • What component or system failed or malfunctioned, and is it available for inspection upon request? [DO NOT KNOW] • How was your safety or the safety of others put at risk? [IT WASN'T] • Has the problem been reproduced or confirmed by a dealer or independent service center? [NO] • Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? [NO] • Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? [ONLY THE "LANE ASSIST NOT AVAILABLE"]