Service Bulletin

The inside lens of the headlights may fog temporarily when the vehicle is driven in the rain or washed at a driver through car wash. This fogging is more ...
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Section :

Body Electrical

Ref. No. : BE-5005

Service Bulletin

Date : Page :

Feb.,2005 1 of 2

Area Application : Europe, General Model Name : ALL MODELS Model Code : ALL Subject : HEADLIGHT LENS FOGGING This Service bulletin is the revised version of Ref. No. BE-3008, issued Mar. 2003. This is to inform you of the procedure for diagnosing the cause of headlight foggy.

Part No. Information : New Part No.

New Part Name

Qty

NA

NA

-

Production Effective : VIN

Production Date

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The inside lens of the headlights may fog temporarily when the vehicle is driven in the rain or washed at a driver through car wash. This fogging is more noticeable for clear lens headlights because of the increased adoption of multi reflective type headlights. There are two main causes for this fogging condition, dew condensation and water entry. In most cases the cause of this problem is from dew condensation. This fogging from dew condensation is not caused by a parts failure. (Dew condensation) If the lens surface is cooled rapidly by rain or from a car wash, moisture in the air inside of the headlight condenses on the inside lens surface resulting in a foggy appearance. This is the same phenomena as window glass fogging during rainy weather or the dew that is formed on the outside of a glass with a cold drink in it. The glass surface gets cooled by rain or water

(Dew condensation of a headlight)

(Dew condensation of a window glass)

(Dew condensation of a glass) B114999E01

(Inspection Method) In cases of headlight fogging, judge whether the condition is caused by "dew condensation" or "water entry" using the following method.

OVERSEAS CUSTOMER SERVICE TECHNICAL DIV.

Service Bulletin Within 10 minutes after turning ON the

Page :

2 of 2

Possible water entry

headlight, the fogging disappears where the light passes through the headlight lens.

Ref. No. : BE-5005

(Proper repair should be made) NO

HINT:

Following causes are possible.

࡮Check the vehicle at the place where there is



no influence of rain or water.

࡮Sealing failure of a breathing tube.

࡮In cases of fogging on the rest of the lens

࡮Installation failure of a breathing tube.

surface, the fogginess will disappear within an

࡮In cases were a high pressure cleaning of the

hour after turning off the headlight.

engine compartment, water accidentally enters the back side of the head light. ࡮In cases were the headlight rubber seal is not installed correctly.

YES

࡮The lens is broken.

Dew condensation (Not a failure)

B115608E01

NOTICE: Regarding the effect on the brightness of the headlight when the lens are fogged, there is no reduction to the performance or function of the headings.

OVERSEAS CUSTOMER SERVICE TECHNICAL DIV.