Seat height adjustment has stopped working...

[svvg]

Hi - I pushed my seat back after my vertically challenged GF had driven, but I’d left a mini tool box under the seat. (I used the memory function, so it also tried to lower it etc). Needless to say the seat got jammed, but I managed to pull the box out... now the seat height won’t adjust. I can hear the relay clicking but that’s it. Front portion of the seat will raise and lower - but rear portion won’t and my GF can’t see over the steering wheel now....

Grateful for suggestions as to what to check, as I can’t easily raise the seat to peer underneath...