A/C - Condensate Build Up On Inside Glass

Article No.
97-26-2

12/22/97

^ INTERIOR GLASS - CONDENSATE BUILD-UP ON
INSIDE OF WINDOWS

^ CLIMATE CONTROL - CONDENSATE BUILD-UP ON
INSIDE OF WINDOWS

LINCOLN-MERCURY:
1995-98 CONTINENTAL

ISSUE:
Condensate may build up on the inside glass of the passenger compartment. This may be caused by any one or more of the following conditions:

^ Humid ambient air

^ Cool or cold ambient air

^ Improper setting of the climate control system

^ High humidity on the inside of the vehicle due to:

^ Restricted air flow

^ Multiple occupants

^ Water leaks

^ Pressure cycling switch calibration

ACTION:
Refer to the following Service Procedure for details.

SERVICE PROCEDURE

1. Check for sources of excessive interior moisture and service as required.

^ Wet carpet from occupants shoes/boots

^ Water leaks at front cowl, windshield A-pillars, or any other location

2. Check for restricted air flow.

^ Remove and inspect the -19N619- filter as described on Page 12-01-2 of the appropriate Continental Service Manual

^ A dirty or restricted cabin air filter will reduce airflow and may reduce the effectiveness of the defroster system

NOTE:
THE -19N619- FILTER SHOULD BE REPLACED AT THE RECOMMENDED 24,000 KM (15,000 MILE) INTERVALS AS LISTED IN THE VEHICLE MAINTENANCE SCHEDULE. REPLACEMENT OF THE FILTER IS A NORMAL VEHICLE MAINTENANCE EXPENSE AND IS NOT REIMBURSABLE UNDER WARRANTY.

3. With the cabin filter removed, look down through the air inlet and inspect the operation of the recirculation door. It should be fully closed (up position) with the Electronic Automatic Temperature Control (EATC) system set in MAX A/C, and should be fully open (down position) in every other operating mode. If it fails to operate correctly, follow normal Service Manual diagnostic procedures. Reinstall the air filter.

4. On vehicles built prior to 4/28/97, install a revised Pressure Cycling Switch (F6RZ-19E561-AA) that will run the A/C compressor at lower ambient temperatures. The compressor is intended to run whenever the ambient temperature permits the evaporator to remove moisture from the incoming air.

5. Review the operation of the EATC system with the customer.

Being an automatic system, many customers expect to set the temperature once and put it into AUTO mode and let the system do the rest. But since the system does not sense humidity levels inside the vehicle, it has no means of compensating for high humidity conditions.

Just as with manual climate control, it may be necessary on an AUTOMATIC system to manually select the DEFROST mode, then adjust the temperature and fan speed accordingly to minimize condensation build-up on the glass.

This may be especially appropriate whenever there are multiple occupants present in the vehicle.

PART NUMBER PART NAME
F6PZ-19E561-AA Pressure cycling Switch

OTHER APPLICABLE ARTICLES: NONE

WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage

OPERATION DESCRIPTION TIME
972602A Replace Pressure Cycling 0.3 Hr.

DEALER CODING
CONDITION
BASIC PART NO. CODE
19E561 12

OASIS CODES: 102000, 208000, 208300