Skip to content
View in the app

A better way to browse. Learn more.

Audi Owners Club (UK)

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Welcome to the Audi Owners' Club - An Independent community!

Membership is completely free, and our community is built by enthusiasts, for enthusiasts. We’re a proudly independentnon-official club, so all the help and opinions you’ll find here come directly from members with real experience of Audi ownership.

Join the club now!

 

Audi A4 Cab Rear Lights Water Ingress

Featured Replies

Hi All,

Another problem to solve. After many days of rain and dampness outside I've noticed that NSR light has water beads internally. Clearly, there is water getting and I wondered if anybody had a fix for this.? I removed the light recently, cut an old innertube into large washers, and replaced the light bulbs. TBF if anything it's got worse......  I did run a bead of mastic around the outer groove of the lens but I suspect it hasn't set very well due to the weather. Is there any goto trick that anybody has out there or am I chasing shadows with this attempted fix.

 

As always your help is greatly appreciated. 

Hello Mario,

It’s possible that adding a bead of mastic has made things worse since you’ve probably now ‘locked in’ the condensation. 
Kind regards,

Gareth. 

  • Author

Hi Magnet, it's a good point. I will remove and dry out this week. Is there any known water ingress areas on this cluster type.?

 

Thanks

 

 

 

 

Hello Mario,

It’s not uncommon to have condensation within light units. You could try removing your ‘mastic’ and thoroughly drying out the unit with a hair drier, before carefully resealing it with a good quality sealant. 
Kind regards,

Gareth. 

  • Author

Yeah I think that's a job for this weekend. I'll buy some good mastic and spend a morning getting it right. I just can't see where water would be getting in.

  • 5 months later...
  • Author

I'm almost ready to give up..... I've sealed the edges of the light 3 times have taken my time. After the recent heavy rain the water is back. I'm at a loss it can't be my sealing as I really took my time.

What am I missing is it getting in the bulb holders. Does anybody have any experience please.?

Is there another area I need to look at.? I did my Skoda ones and gave them no where near the same care and they've been fine.

 

If not where is the cheapest to get new ones although I'm not ready to give in quite yet.

 

Many Thanks 

Again

 

Mario

  • 2 weeks later...
  • Author

Right ok - touchwood I've fixed it. Hopefully this may help somebody else.

I wasn't prepared to give up and so removed the light again. This time I really looked closely at the seals and was convinced the lense was sealed to the bulb unit. So after further inspection on the rear of the unit I noted some tiny hair line fractures almost went unnoticed. The rear plastic moulding of the light must get brittle. It wasn't just in one place. So I glue gunned all the cracks 3 in total and touchwood the lamp after some reasonable rain hasn't beaded on the inside.

 

Thanks Maz

Create an account or sign in to comment





Background Picker
Customize Layout

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.