A minor problem has arisen!
Five minutes into our drive out today it was all going superbly, until just before the last chance to turn around for home the TPMS light came on and also the brake light flashed briefly (maybe the handbrake switch, as it has not lit again except when I operate handbrake).
A minute later this was followed by the red SRS light.
And as I drove into the garage, this was followed by followed by the ABS light and the EML light.
All the fuses in both boxes check out OK, correct volts and no drop across them.
My OBD2 suggests U0121 “Lost communication with ABS controller.”
All the usual other engine parameters it can see are spot-on normal.
I have a sinking feeling I’ve disturbed some wiring when I put the head unit back, despite being careful not to force anything!
Any suggestions?