Brake Pad service deceiving me ? Help

Hi gents

Hope all is well .

So today my inspection light ( car on lift )came on upon start and went looking at service info it in yellow rear brakes ( it now just have underscores_ _ _ _ _ ) , and when i drive or leave handbrake down , the handbrake light is still on but in yellow .............but Saturday I saw just took a look and it said next 27000kms .

I really don't know what's going on with my obc , and then when I started again then the service light ( car and service written above ) and the it was the same with rear brakes and underscores...

What bugs me is that my rear and front breaks were done under motor plan

I don't know if that underscore thingy is meaning just the sensor is gone or what ? Coz rightfully so it should show me the kms to go or kms passed

Thanks gents

Cheers