Renault Clio 3 - Headlights Misting Up - Renault Forums :: Independent Renault forum

Bodywork Paint care, corrossion, body kits, spoilers, skirts etc.

LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old 22nd March 2010 Thread Starter
Junior Member
Join Date: Mar 2010
Posts: 1
Nominated 0 Times in 0 Posts
TOTW/F/M Award(s): 0
Thanks: 0
Thanked 0 Times in 0 Posts
Renault Clio 3 - Headlights Misting Up

I have a problem with the headlights on a new clio they keep on misting up inside. It does clear, but can happen when just washing the car. Both Renault and the Garage claim it is natural.
Any Ideas?
Shugielog is offline  
  5 Lastest Threads by Shugielog
Thread Forum Last Poster Replies Views Last Post
Renault Clio 3 - Headlights Misting Up Bodywork madnoel10 3 4573 22nd March 2010 02:38 PM
Sponsored Links
post #2 of 4 (permalink) Old 22nd March 2010
S.M.A.R.T.(y) Pants
VelSatisfied's Avatar
Join Date: Jul 2006
Posts: 16,937
Nominated 11 Times in 37 Posts
Nominated TOTW/F/M Award(s): 17
Thanks: 4,549
Thanked 2,467 Times in 1,851 Posts
Re: Clio Mark 3 Headlights

Hi there and welcome.

There are basically 2 reasons why you would see moisture in the headlights;

The first would be if the seals were allowing water into the units - but this would mean the water level would be ever-present, and would increase with rainfall, etc.

The second (which from your description sounds more likely), is that moisture present in the air within the lights is condensing as the surface glass is cooled down when washing the car (it'll probably also be a similar story when at night, when the ambient air temp is colder), but once the lights are on (or the lens warms up), and the air inside heats up again - this moisture once again is carried in the air, and 'invisible'.

It is possible to 'vent off' the lights (Fords had similar issues) by covering the lens with black paper, switching on the main beams, and removing the aperture for the sidelight bulb - then refitting after around 10-15 mins - but it is a temporary measure as the units aren't hermetically sealed.

Hope this helps explain what's happening.


This job should never be complete - the day I think I've done it all, is the day I resign.

S.M.A.R.T. Technician
Currently in VelSatisfied's garage:
2005 FIAT Ducato 2.8JTD LWB Gran Volume, 2000 Kawasaki ZZR 1100 D7 'fullpower' in black + full GIVI & KAPPA luggage, 2007 MB R-Class 320 CDi Sport LWB uprated by Brabus to 300Bhp don't know if there's a 155mph limiter - will be fun finding out! 2004 Mercedes Vaneo 1.7 CDi Ambiente 7-seater
VelSatisfied is offline  
post #3 of 4 (permalink) Old 22nd March 2010
Diamond member
philipjohnson82's Avatar
Join Date: Aug 2009
Posts: 660
Nominated 1 Time in 1 Post
TOTW/F/M Award(s): 0
Thanks: 22
Thanked 70 Times in 56 Posts
Re: Clio Mark 3 Headlights

BMW's (in particular the E36 3 -series) have this issue too. It does happen naturally, but there are two ways to cure this:

Get some foil and apply the shiny side to the outside of the headlight lens, remove the bulb covers and leave the lights on main beam as per Paul's post, but keep the engine running whilst you do this otherwise you could end up with a flat battery!

Or, put some silica gel (those white packets you get every time your Missus buys a handbag or shoes) and put one of them inside each headlight.

Alternatively, i have also found that running the car minus the bulb covers also works, although I don't drive it in the rain!
Currently in philipjohnson82's garage:
'55 SAAB 9-3 150 TiD / '04 BMW M3
philipjohnson82 is offline  
post #4 of 4 (permalink) Old 22nd March 2010
Technical Supremo

Join Date: Feb 2007
Posts: 42,940
Nominated 16 Times in 67 Posts
Nominated TOTW/F/M Award(s): 28
Thanks: 372
Thanked 5,200 Times in 4,712 Posts
Re: Clio Mark 3 Headlights

With the bulbs removed a blast with a hairdryer can drive the moist air out - no gaurantee it will last though.
Currently in madnoel10's garage:
Honda Civic 1.4l
madnoel10 is offline  

clio , headlights , mark , misting , renault

Quick Reply

Register Now

In order to be able to post messages on the Renault Forums :: Independent Renault forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome