16’ Volvo vnl check transmission sign when reverse

The last couple of weeks I’ve been getting check transmission at next stop while in reverse and reversing as if air pressure is low(but it’s not) and also sometimes I’ll catch the sign while in traffic. All help and advice greatly appreciated!!

 

It kept coming up on the screen. Then I ve been noticing very slow take offs these last couple days also getting a message on my reader about low transmission air tank pressure and a faulty calculated load message. I dropped it off at the shop yesterday morning. I’ll give you update once I get more info. I would say though don’t wait too long get someone to put an eye on it.