Driving to work this morning in my L494 and all of a sudden get a 'park brake' not available warning, shortly followed by pretty much every other system fault including, special modes not available, gearbox fault, E-diff fault, Lane departure fault, no speedo and also noticed right hand headlight pack not working.

Managed to limp to work and let vehicle shutdown, restarted and all faults are still present. I'm thinking for all systems to go down at once it could be an earthing issue?

Has anyone here had similar and would like to point me in a general direction? Mrs in on way to work bringing my scanner, not sure what that will show though, considering the amount of faults presently!

Just hit 227K fault free miles and now this!!!

Thanks to all in anticipation

Mike

Will be drivers side headlight earth, had the same issue with mine last week on the offside and a couple of years back on the nearside

Hi

Many thanks for your spot on diagnosis!

Found the offside earth stud completely sheared off, temporary fix by earthing via the accelerometer stud, couple of new studs on order, think I'll do the nearside at the same time to avoid a repeat performance!

I'm not complaining considering my mileage!

Glad I could be of help

Just out of interest, did you get new earth studs installed (JLR special insertion tool required) or did you earth them down at another point / another way?

Many thanks

Rivnut and some sealant over the top to protect things

Hi, thanks for the reply.

I'm going to try the JLR replacement studs as I've fabricated a tool to insert it, failing that I've got a Avdel Gun and inserts, so at least I have a fall back.

Saturday morning job I feel!