2008 V6 Petrol EPB problems

[Schuey9]

After changing a rear caliper. I have this message on my screen "APPLY FOOT AND PARK BRAKE" I press foot brake and lift park brake switch and nothing happens apart from a chime noise. anyone have any ideas?

[Schuey9]

Sorry forgot to say it is an XF

[P700DEE]

As the park brake is also on the rear the car is asking you to reset the parking brake. If its not working is there any chance you have not reconnected everything right?

[Schuey9]

Pretty sure all connected correctly, only had to remove cable to change caliper.

Today it has CANNOT APPLY PARK BRAKE in red on centre info panel.

Going to disconnect battery -ve and wait 10 mins then reconnect and try again.