Crossland x no 12v power

[Peter1970]

Bought a Crossland x 2019 1.2 engine very low mileage with electric fault, sadly didn’t know it had French wiring ( how could Vauxhall agree to that ) , noticed it’s has a new fuse box inside,radio always works, no power to dash or much else , oddly if you slam a door mostly passenger front dash lights up and radio comes on like my mokka x , can’t find any fuses blown that I, all 3 fuse boxes have 12v , electric windows are down, they show 7.5v but how French there all black wires

[Peter1970]

I another strange one is after banging passenger door and light on dash come on , oil check etc , radio on , air con lights on , central locking light on , push the hazard button and they all go out straight away. Car more than likely has about 5k miles .

[Vauxhall Owners Club]

That sounds more like either a loose connection or a Can-Bus fault.
I would start by doing a 'wiggle test' which is basically wiggling wires until you invoke the fault and the lights comes on
Start with the door wiring where it goes into the door from the pillar

[Peter1970]

On 3/26/2023 at 1:38 PM, stewart229 said:

2020 crossland 1.2 Griffin 17k miles. I have this annoying fault where there is no 12v electrical power at all, put key into ignition and nothing- no ignition or warning lights at all, if doors locked they wont open with key if doors are not locked if I slam the door or open bonnet and bang the battery the power comes back on and the clock reverts back to zero and ignition then works and car will start.

Any ideas?