Morning Guys,
My Son has just got a Fiesta Mk8 Titanium as his first car, however at some point in its history it has been previously repaired, looks like frontal damage although fully repaired now, not sure if this is relevant.
Anyway the interior light in the roof has a switch with 3 positions, Off, On and door open On. It also comes on when ignition turned off and also should extinguish when car started, orginally if door opened it should illuminate for 30 secs or so then turn off. The 3 switch positions On should illuminate all the time, Off should not illuminate at all and 3rd if door open illuminate for the 30 secs then off.
This is its normal operation according to the manual.
His lamp however stays on when car started, and doesnt turn off, it doesnt turn off even when car locked, which runs battery down. It illuminates when switching car off and when doors opened but doesnt extinguish. If i turn switch off it goes off but illuminates when door opened it shouldnt?
So light is wired via the BCM no DTCs show up at all.
I have tried disconecting the battery for several minutes, a BCM reset and a BCM self test which comes up as ok. I have removed lamp and checked switch which seems to work ok. All wiring is as it should be according to wiring diagram.
Couple of other things I've noticed, think the Front door has been replaced as it no longer has the keyless entry door handle, nor does this work on the passenger side or even the boot, although the antenaes are in place, it does allow car to be started when keyfob in car though. Strangely thos too is wired through the BCM again no DTCs show?
So suggestions please as he keeps getting flat battery and im scratching my head?
Thanks
Update: ok so not a fault, previous owner had inadvertently pressed the 2 map lights, unless you re press them they remain on permanently. Even battery disconnection and module reset doesnt revert state. I assumed when you turn car off and lock it the light would revert back to its normal state, it doesnt so something for all to be aware of.
Anyway all working as it should now.