Anyone know how to recalibrate Mk3 satnav?
 

I bought a BMW Mk3 computer off Ebay. All installed & working, but I only found out after the event that I should have left it for 15 minutes on the flat with the key in the ignition to allow it to calibrate the gyro.

As a result, it is now rather confused, and keeps finding itself about 60 yards from where it actually is.

Does anyone know how to restart the calibration process?

Delete all the previous destinations and entries in the address book then just wait, one I bought from Germany took about 20 miles to work out where it was

I've got it set on 125 yard scale on the map. It keeps working out where it is and jumping to the right place on the map, but once you're on a long straightish bit for a while, it gets confused again. I'll give it a few more miles, and see if it settles down.