Faulty Speedometer Screen

[Geekice]

Thanks, I did look for a wiring diagram for a few minutes but couldn't find one so I appreciate that, I'll take a look.

It comes in 3 components, the dashcam, the module and the immobiliser.

The dashcam was just attached via USB to the module, so that's removed.

The module was connected via an OBD splitter, so that's now removed.

But the immobiliser seems so go much deeper to the point it looks like I'm going to have to remove the dashboard to get to the wiring which seems crazy. I've removed plenty of dashboard before so not an issue for me but feels extreme. There's two wires that are taped up to the existing loom and I've put my hand up deep into the dash and can't feel them come out. I'm concerned they're effecting other systems so want it out.

The immobilizer probably connects to the front fuse box. Could you please check if there’s anything unusual or, if you want, send a photo?

 

[EVfanatic]

The immobilizer probably connects to the front fuse box. Could you please check if there’s anything unusual or, if you want, send a photo?

Thanks Geekice, I did look at the fuse box but couldn't see anything obvious, there's a taped wire off the negative battery terminal that looked potentially iffy. See pics below. Any help would be appreciated.

I managed to get the screen fixed, update all modules, re calibrate the front camera and front radar, fix all errors with srs, abs, etc, programmed a new key too... So the car is great now other than I couldn't update the FICM and am stuck on R13. It's an SE model and I did see a comment about someone not being able to update the SE, I'm not even sure what the latest version is for the SE. So got that to look into.

 

[Geekice]

@EVfanatic The fuse box and the negative terminal look fine, so I’m not sure where the immobilizer connects. For the MG4 SE (software starting with SWI69-....-1100Rxx), R13 is very old; the latest available is R40. It brings several improvements and fixes the A/C and Bluetooth issues. I recommend installing R40, then updating FICM and HVAC via SIPS to sort out the air conditioning. Here’s the link for R40, and I’ve attached the PDF with the update instructions.