2010 Galaxy Powershift Reversing Lights Failed

[andy18n]

Hi all

2010 Ecoboost Powershift - Reversing lights have stopped working. Sensors still work. Bulbs both OK. There is no live feed to rear reversing lights when in reverse gear.

Auto electrician has spent 3 hours on it, traced all wiring for continuity, and found no issues around tailgate gaitor. A live feed is coming off gearbox to control unit when in reverse, although it's hard to trace whether it's a multi pole switch that may have a separate feed for the reversing lights - all extremely complex.

I have disconnected battery for an hour to do an ECU reset and still no change.

There are no fault codes present.

The auto electrician and local garage are suggesting an ECU module change, so a very expensive fix. It's a post Feb 2010 so everything is module controlled rather than conventional switches, relays and fuses. 

I'm at a real loss as to whether to spend this sort of money when there's no guarantee it will fix it, although there isn't a lot else to try (unless we try and wire reversing lights from a live feed to reversing sensors, can't image that is simple).

Any advice or experience would be really appreciated.

Many thanks

Andy