2024 Lincoln Nautilus Hybrid

Lincoln Navigation has incorrect speed limit detection/programming on rural roads in Fulton County Ohio. When using the Adaptive Cruise, firstly the Speed Limit icon that is stationary on the dash, right in front of the driver, has incorrect speed limits. The speed limits icon also randomly goes from the incorrect speed of 45mpg, suddenly for no environmental reason, drops to 25 mph, then after a distance, goes back up to 45 mpg. The speed limits on all rural roads, other than municipalities, is 55 mph. While using the Adaptive Cruise, if someone is behind me, doing 55 mph that I've set my cruise to, and SUDDENLY I drop my speed to 25 or even 45 mph, there could most likely be a rear end collision. I have been in contact with Lincoln dealerships, Lincoln Concierge, Lincoln Way, Lincoln Over the Air... I just get passed around from department to department, having me reset my screens, but no knows how to fix. I've spent numerous hours on the phone. No one calls me back like they say they will. I've repeated this issue so many times to so many different people and departments, it's been extremely frustrating. If they could get me to someone that programs the navigation that Lincoln follows to re-programs those incorrect roads, all would be fixed. I believe Lincoln has it's own system because Google Maps and Waze are displaying the correct speeds at the exact locations.

There is a safety concern with this car involving the feature that automatically slows down the car when a curve in the road is detected. This problem with the curve detection feature happens when the dynamic cruise control is engaged, with or without BlueCruise being active. At certain locations on the freeway, the car will aburptly brake, slowing the car by approximately 10 mph. When the abrupt slowdown occurs, the driver's display shows the icon for curve detection when there is no curve in the road. An abrupt reduction of speed on the freeway for no valid reason is a safety problem. This is not a random occurence. It happens every time I drive on I-80 eastbound at location: 41.545369, -93.963420. There is no curve at this location in the road that necessitates any slowing of the car, let alone an abrupt reduction in speed. The dealership found no issues that they could correct and no software updates available.

Lincoln system failure - My wife and I were coming home from a trip driving on Interstate 20 at 75 MPH with the cruise control and steering assist on. Traffic ahead was slowing quickly. Normally when approaching slower vehicles the cruise control will start slowing my Lincoln long before the set following distance is reached. I usually just let the cruise control slow me down. When I realized the cruise control wasn’t slowing me I applied the brakes and nothing happened. Even the engine kept power on. I steered into the emergency parking lane passing vehicles on my left. My wife hit the neutral button and the ignition button to try to kill the engine. After what seemed like a very long time we started slowing down and stopped after 2 to 3 hundred yards. The car was still in drive mode, the engine was still on and the cruise control was still engaged. Why we finally stopped I don’t know. Being extremely busy pressing the break pedal and hanging onto the steering wheel there was no way I could have leaned way forward and to left to apply the emergency parking brake. Useless location in an emergency. After continuing on the steering assist wasn’t working properly. It would start steering around a curve then disengage. I wasn’t about to turn on the cruise control to see if it was working. Also earlier in the day every time I turned the car off and back on I’d have to go thru a menu to get the radio to work and re find the station I listen to. Related? Also when the GPS is set on a destination and I turn the car off and back on when stopping at a rest area I have to reset the destination. Related? The mechanic at my local dealer was able to duplicate the problem. He rebooted the system. It happened once. Will it ever happen again? I know that occasionally I have to reboot my computer. It seems similar to me. I doubt I’ll ever use the cruise control again.

Pre-collision doesn't seem to be working in these vehicles. Update was to be released in Q2 of 2024 and as of late November not updated. My vehicle has last checked mid-November, and they tested a new one still on lot and it didn't work, and talked to a salesperson who said he delivered a new one the week of Thanksgiving and it didn't work either.