Message on digi tacho

dozy:
I’ve had a message on digi tacho saying something like service due 24/4/17 , I’ve now got :exclamation: ( symbol that looks like a truck ) , arrow pointing too right , t , then it says , time for service .
Dash is lit up Amber , with tacho graph information , and a large t on bottom left hand corner .
I reported the due for service on 24/4/17 a few times and got no response , on Monday I reported now saying time for service ( I’m assuming that means calibration :question: , but there saying it’s not due too 2019 and as its a Amber warning not red carry on .
Any one had these warnings , ta

Ive had a couple (bought the truck used) but had it ‘recalibrated’ to message delete as it used to come up with random msg’s. Mines a VDO unit and needed a new li ion battery when i got it, i replaced this (usually replaced every 2 years) so will see it out as new one is arriving shortly. Yours is most likely due a battery. If the battery dies the tacho will lose its programming…