Hello All,

 

I’m coming for advise after I tried to find answer here on forum to my intermittent issue my mk2 Octavia developed. 

 

Are rear number plate lights, boot switch and rear wiper linked through same ECU? 
 

I have intermittent fault when rear number plate lights stop working which is signalled on dash. In same time when I try to open boot door remotely via middle button on key fob, it’s unlock and boot lid pop to open but after closing lid the central locking system wont lock the lid door and I have to manually press down fob button for unlock whole

car and top button for lock whole car. 
 

I have checked wiring loom and it’s look intact. Tomorrow I’m planning to remove trim on lid to check wiring for any water damage…

 

Any other idea? 

Update:

 

So did a little bit of investigation and came to this:

 

Physically opened tailgate its not displayed on maxi-dot. In same time boot lights, number plate lights and rear wiper doesn’t work. Im still able to unlock and lock tailgate via remote knob but the door mechanisms sounds “lazy”. It thought it might be contact or wiring,  BUT if I open and shut rear left door, everything is back to normal and working like a new🤔🤔. 
 

I have removed tailgate trim, checked wiring and connectors but did not find anything obvious. 

 

Are there any earth contacts in back of car which might be loose? 
 

Thank you.
 

 

Problem solved. It was loosen earth contact located behind carpet trim on left hand side where the CD charger is. 
 

so might help to someone

 

Edited 29 August, 20214 yr by Nosnx

Thank you for the info! I have the same fault. 🙂