Galaxy EcoBoost Powershift Reversing Lights Failed

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Wed 4 May 2016 14:51
Galaxy EcoBoost Powershift Reversing Lights Failed - andy18n
Hi all
Reversing lights have stopped working on above 2010 car. 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 and may even be an internal switch on powershift gearboxes?
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
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Wed 4 May 2016 19:56
Galaxy EcoBoost Powershift Reversing Lights Failed - elekie&a/c doctor

You are absolutely right,it ain't that simple.The reverse switch on the gearbox sends a signal to the Bcm (body control module).This then sends power to the reverse lights on 2 circuits (left and right).I doubt if the lights can be powered direct from the switch ,again not that simple.You can't take power from the park distance module as there is no dedicated reverse power to it.It is switched from the Bcm on the can network.Has the garage been able to switch the lights on via the diagnostic system to the bcm?

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Thu 5 May 2016 12:19
Galaxy EcoBoost Powershift Reversing Lights Failed - andy18n

Thanks - really useful reply. I haven't asked that question - will do. I should have added it's not been into main dealer yet - all been done so far by a very good and logical auto electrician and local garage using their own diagnostic kit, who continue to try and research a more certain solution.

Sounds like it might be a good idea to get it on the Ford dealer kit and see if they can resolve it. At least it can go in with a number of potential causes already clarified.

Thanks again

Andy

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