Submitted by randallgrayevans on Thu, 2019-08-22 18:35
The M3 Lane Avoidance Assistance is not working at speeds below 40 mph( it used to work just fine). Testing has validated that the Lane Departure assistance does not work at speeds from 25 to 40 mph but does work at speeds greater than 55 mph. I have not had occasion to test between 40 and 55 mph. It does not warn me or correct the car when I have the car to drift into the adjacent lane without signaling. Customer support told me it is working as it's supposed to but that is inconsistent with the manual which states, on page 87, "Lane Departure Avoidance Lane Departure Avoidance provides steering interventions if Model 3 drifts into (or close to) an adjacent lane when driving between 25 and 90 mph (40 and 145 km/h) on major roadways with clearly visible lane markings". Perhaps it's a definition of "major roadways" but I am talking about a six lane local road that I am having the issue on, and it used to work just fine until a couple of software updates ago.
Unfortunately Tesla customer support is no longer answering my emails on this issue so i would like to inquire if others are experiencing this issue also?