goldbrick wrote:I just tried it in my 2017 S and after driving about 20 feet in 3 seconds it started to beep. It's a 'beep-beep, pause, beep-beep' sound. Plus I think there was a red triangle that flashed on the dash but I can't remember for sure.
Red triangle is the "master alarm". It's meant to alert you that there is another alarm present that you need to examine. It's also why it would be helpful to have a description of the actual warning lights in this case -- "LH" could mean a lot of things.
FWIW the two most common start-up problems related to user-error (my experience only):
- pressing the start button twice instead of once
- not holding the brake firmly enough to register
Also, trying to engage DRIVE before the car is ready, but I don't think a "restart" is needed for this.