What is this line?... torn grommet.

[WewannaB7]

While installing my new rain tray cover the other day, I noticed at torn grommet that my dealer must’ve ripped when working on my car at some point, as I bought my car new from them. It seems to be a line that goes through the firewall to the battery. Does anyone know if it matters that the grommet is ripped? Pic below with blue arrow pointing to it.

https://s2.postimg.org/fwnucohq1/8_BCE7_DB3-_C717-4_D36-9_DCD-_A1103030_DCF1.jpg (https://postimages.org/)

[naiku]

Are you there only owner of that vehicle? Typically that's where people route the power wire for an aftermarket amplifier.

[WewannaB7]

Are you there only owner of that vehicle? Typically that's where people route the power wire for an aftermarket amplifier.

Yep, original owner since new.

[naiku]

Yep, original owner since new.

Ah sorry, ignore my previous comment. Was looking on my phone and thought that grommet was the one behind the battery, not in front. I doubt it matters that it is ripped, to be honest.

[a4audi4fun]

Grommet is likely there to prevent wire chafing due to engine vibration. Get some black tape and cover it up - will look a bit ghetto but it's not stopping moisture ingress or anything else as the battery side is exposed to dampness anyways.

[WewannaB7]

Thanks guys!