Side assist disabled (Short - LED right "mirror")

[leonmax96]

Since I got the MK4 in 2021 I get Side assist error (in colder seasons) on first engine start.
I don't have error code right now but it reads like "Short circuit to + in mirror LED".

When I stop/start engine it immediately works without any issues.

There was already a lot done in warranty, change master ecu rear radar, change ambient LED in door, cabling, change battery..
It was just "we don't know but we change some things" I guess

Could it be only bad connection in door connector?

I have appointment with dealer for some maintenance soon, maybe someone knows what could be tried?

 

[cairus]

Since when does the Leon 4 have an LED in the mirror glass? Isn't that in the door panel? The control unit may also be defective, in this case it is the master control unit

 

[leonmax96]

Yes, the code indicates mirror, wrongly.
The master unit in the rear has been changed already.

I don't mind that problem really anymore, it's a day one thing, got used to it, but still little annoying.
If there would be any fix it's good, if not - it's fine as well

 

[cairus]

Do you also get the error message in the cockpit when starting?

 

[leonmax96]

Yes, cockpit message, yellow light, infotainment (car status)
Cannot be activated manually again in the problematic startup cycle

Funny enough when I was troubleshooting, it never happened even in winter, when connected to 12V charger over night.
That's why dealer changed battery I guess, just dealer things