Lighting - Moisture In Mirror Turn Signals
Date: May 21, 2007
Order No.: T-B-88.70/49a
Supersedes: T-B-88.70/49 dated June 13, 2006
Group: 88
Revision History
Revision Date Purpose
a 5/21/07 Applicable Models Updated
- 6/13/06 Initial issue
SUBJECT:
All Light Truck Models
Moisture in Additional Turn Signal Lamp(s) in Rearview Mirrors
If you receive customer reports regarding moisture or water inside the additional turn signal lamp(s) (Figure 1), please advise the customer that
surfaces fog up whenever they are cold and come in contact with warmer, humid air. An example of this is the mirror in the bathroom which often
fogs up after showering because the warm humid air from the shower may condense on the colder surface of the mirror. The same occurs to the
additional turn signal lamps. Water vapor that is normally present within the lamp housing may condense on the colder surface in the surrounding
area which typically is the lens as the ambient temperature decreases. Any fogging will typically disappear after 1 or 2 hours during the day
depending on temperature and humidity. This condition is normal operation and does not call for repair. If there is any indication of greater moisture
in the housing, please check for external damage to the housing that may be the cause of the condition. Damage to other than production defect in the
Date: May 21, 2007
Order No.: T-B-88.70/49a
Supersedes: T-B-88.70/49 dated June 13, 2006
Group: 88
Revision History
Revision Date Purpose
a 5/21/07 Applicable Models Updated
- 6/13/06 Initial issue
SUBJECT:
All Light Truck Models
Moisture in Additional Turn Signal Lamp(s) in Rearview Mirrors
If you receive customer reports regarding moisture or water inside the additional turn signal lamp(s) (Figure 1), please advise the customer that
surfaces fog up whenever they are cold and come in contact with warmer, humid air. An example of this is the mirror in the bathroom which often
fogs up after showering because the warm humid air from the shower may condense on the colder surface of the mirror. The same occurs to the
additional turn signal lamps. Water vapor that is normally present within the lamp housing may condense on the colder surface in the surrounding
area which typically is the lens as the ambient temperature decreases. Any fogging will typically disappear after 1 or 2 hours during the day
depending on temperature and humidity. This condition is normal operation and does not call for repair. If there is any indication of greater moisture
in the housing, please check for external damage to the housing that may be the cause of the condition. Damage to other than production defect in the
