2302923

Technical Service Bulletin (TSB)
Headlamp Condensation Clearing Procedure
REFERENCE:
TSB: 23-029-23
GROUP 23 - Body
VEHICLES
AFFECTED:
2021 - **2023** (WL) Jeep Grand Cherokee
2021 - 2022 (WK) Jeep Grand Cherokee
2022- **2023** (WS) Grand Wagoneer/Wagoneer
2021 - **2023** (KL) Jeep Cherokee
2021 - **2023** (DT) RAM 1500 Pickup
2021 - **2023** (WD) Dodge Durango
2021 - **2023** (MP) Jeep Compass
**2021 - 2023 (MV) Jeep Compass**
2021 - **2023** (JT) Jeep Gladiator
2021 - **2023** (JL) Jeep Wrangler
**2019 - 2023 (BV) Jeep Renegade**
Date:
February 25,
2023
REVISION: 23-024-22
MARKET APPLICABILITY:
HNA
HMEA
HSA
HIAP
HEE
HCH
CUSTOMER
SYMPTOM:
Some customers may report that on occasion, vehicle exterior head lamp assemblies are fogged with a
light layer of condensation on the inside of the lenses (Fig. 1) .
CAUSE:
Head lamp condensation.
This bulletin supersedes Technical Service Bulletin (TSB) 23-024-22, date of issue June 22, 2022,
which should be removed from your files. All revisions are highlighted with **asterisks** and include
additional model years, vehicles and regions.
REPAIR SUMMARY:
This bulletin is to communicate the procedure for head lamp condensation clearing.
STANDARD PROCEDURE - LAMP LENS DEFOGGING:
NOTE: Figures are not specific to vehicle and only used for showing the lamps either good or bad
per the bulletin.
Some customers may report that on occasion, vehicle exterior headlamp assemblies are fogged with a light
layer of condensation on the inside of the lenses (Fig. 1) . This may be reported after the lamps have been
turned on and brought up to operating temperature, turned off, and then rapidly cooled by cold water (such
as rain, or the water from a vehicle wash). Lens fogging can also occur under certain atmospheric conditions
after a vehicle has been parked outside overnight (i.e., a warm humid day followed by clear cool night).
This will usually clear as atmospheric conditions change to allow the condensation to change back into a
vapor. Turning the head lamp on will usually accelerate this process.
Fig. 1
Fogged Head lamps
A lamp that exhibits condensation/fogging should be evaluated in a service bay environment according to the
following steps:
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1. Dry all water from the outside surface of the lens.
2. Operating the lamps for 20 minutes by:
• Starting the vehicle engine.
• Turning on the vehicle lights and turn on the hazard lights.
EVALUATION CRITERIA:
If the condensation/fogging has begun to clear (Fig. 2) from the lamp lens after 20 minutes with the lamps
operating, this indicates the lamp sealing has not been breached, and the lamp does not need to be
replaced.
Fig. 2
Condensation/Fogging Begun To Clear
If the condensation/fogging has not begun to clear after 20 minutes with the lamps operating, or the lamp
has large amounts of water droplets visible on most internal surfaces, this indicates a problem with the lamp
sealing that has allowed water to enter the lamp. In this instance, the customer is also likely to report that
moisture in the lamp is always present and never disappears (Fig. 3) . A lamp that exhibits internal moisture
permanently should be replaced.
Fig. 3
Condensation/Fogging Not Begun To Clear
-3-
23-029-23
MOST COMMON CAUSES FOR HEAVY NON-NORMAL CONDENSATION/FOGGING ON HEADLAMPS:
• Damage: Breakage on the head lamp housing will allow moisture/water to enter to the head lamp
(damage, cracks, holes, etc.) (Fig. 4) . If this is noticed the failure code must be recorded accordingly:
11/BROKEN OR CRACKED
Fig. 4
Cracked or Broken Head lamps
• Missing Sealing Components: Missing vent caps, access caps or bulb sockets will allow moisture/
water to enter to the head lamp (Fig. 5) . If this is noticed the failure code must be recorded accordingly:
1C / CONNECTOR LOOSE NOT ATTACHED
• Misplaced Sealing Components: Misplaced vent caps, access caps or bulb sockets will allow
moisture/water to enter to the head lamp (Fig. 6) . If this is noticed the failure code must be recorded
accordingly: 1C / CONNECTOR LOOSE NOT ATTACHED
Fig. 5
Missing Sealing Components
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Fig. 6
Misplaced Sealing Components
If no obvious causes are observed, proceed using the failure code for leaks (65) and replace the head lamp.
Refer to the detailed service procedures available in DealerCONNECT/Service Library under: Service
Info>08 - Electrical / 8L - Lamps and Lighting / Lamps/Lighting - Exterior / Unit, Front Lamp / Removal and
Installation.
POLICY:
Information Only.