Ok so now contacted 2 Seat part departments and have been told the same - the mirror on my car is identical part number and revision to a late 14 plate car reg that I gave to them although they won't give out part numbers !!. The mirror is £83.83 which I thought was reasonable and the glass £53.57 which is less so.
So now back to square one, the issue must lie elsewhere which leads me to the control module. Can anyone with a late 14 plate car, working mirror dip and access to VCDS post the Central electrics module details please. Mine are :-
Address 09: Cent. Elect. (J519) Labels: 5Q0-937-08X-HV1.clb
Part No SW: 5Q0 937 084 AA HW: 5Q0 937 084 AA
Component: BCM MQBAB H H14 0112
Serial number: 00011317400069
Coding: 0B000B46C24102FB0BA44000B11C0728102A000000000000000000000000
Shop #: WSC 00049 770 00244
ASAM Dataset: EV_BCMCONTI 011001
ROD: EV_BCMBOSCH_SE37.rod
VCID: 77FB9BB7CE3EAEA6AAD-8022
Subsystem 1 - Part No SW: 5F2 955 119 HW: 5F1 955 119
Component: WWS370 130604 041 0574
Serial number: 130606163946
Coding: 0BC5FD
Subsystem 2 - Part No SW: 5Q0 955 547 HW: 5Q0 955 547 Labels: 5Q0-955-547.CLB
Component: RLFS 024 0042
Serial number: Y13M06D25H09M40S07S4
Coding: 00885D
Subsystem 3 - Part No SW: 5Q0 951 171 HW: 5Q0 951 171
Component: Sensor, DWA 005 0313
Serial number: 000000000ZY131001RT9
Subsystem 4 - Part No SW: 5Q0 951 605 HW: 5Q0 951 605
Component: Sirene, DWA 004 0311
Serial number: 00000000000057164951