Hi,

Had my 2014 L405 RR for 6 yrs with no problems but 2 months ago my infotainment screen went blank. It came back briefly for a few days after the car was left unused for a week but has since permanently failed.
This has stopped the heating/ac, the radio, satnav, the reverse camera, etc.
I bought and fitted an aftermarket replacement/upgrade, but this too is also just blank.
I have checked and changed a number of fuses that I think are related to the audio/infotainment unit with no joy. (Although it’s v hard to know which fuses relate to the screen)
There is some power reaching the console as the hazard warning light button still works.
I’m currently left thinking it’s a loose wire or a faulty connector but is there any way to find it?
As winter is approaching I really need to be able to heat the car.
Any ideas?

check the battery... ... - .- -.




Y. O. L. O.
.

Edit: Both car batteries are less than 12 months old and have been checked. No low battery warnings either.

ok thats good..

there have been reports of the earth cable breaking/corroding in the near side front arch.....worth a check...

theres also a workshop manual dowload link in our wiki... ... - .- -.




Y. O. L. O.
.

Hi James, do you have an OBD scanner?
Worth scanning for DTC’s before you go down too many rabbit holes, but Stan is right, and on a MY2014 the earths are a prime suspect. Read: https://www.fullfatrr.com/forum/topic63901.html “If it ain’t broke, don’t fix it” -where’s the fun in that?

Sorry for slow reply. I’m about to check the front passenger side earth point in the wheel arch. I Couldn’t find any Wiki instruction guides (I’m new to this website) or you tube videos.
Is the earth point behind the casing at the front or rear of the wheel arch? Thanks

I had an issue with my earth points, link below, might be helpful

https://www.fullfatrr.com/forum/topic65812.html