Quite new to automatics, can anyone tell me what the + & - signs next to D mean

I’ve recently acquired a 2017 Qashqai which I’m still getting used to. Yesterday the car was parked on my driveway, we were all going out so I decided to open the drivers & passenger windows to let some air in before we left. I opened the windows, locked the car & went back in the house, a f...

Thanks for the replies guys
Did go into my local Nissan dealership this morning, their response was “take a photo of the warning” then try to replicate it. I asked how was I supposed to take a photo as the warning came on whilst I was driving!!! Met with blank faces

Hi I’ve just bought a 2017 1.6 diesel Qashqai which I’ve been using for the past week. Yesterday evening I was driving along at approx 35mph when I had I red box come on the display above my current speed. The box had the word ‘speed’ in it, chimes went off & the vehicle started to slow down, no...