Defogger Problems of Toyota Avalon

Toyota Avalon owners have reported 15 problems related to defogger (under the visibility category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Toyota Avalon based on all problems reported for the Avalon.

1 Defogger problem of the 2007 Toyota Avalon

Failure Date: 08/17/2011

The contact owns a 2007 Toyota Avalon. The contact stated a white powder residue emitted throughout the air vents upon activating the defroster. The vehicle was currently being repaired. The contact experienced respiratory problems due to the defect. The manufacturer was notified of the failure. The contact expressed concern of the health related issue. The approximate failure mileage was 31,000.

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2 Defogger problem of the 2002 Toyota Avalon

Failure Date: 05/13/2004

Driving my 2002 Avalon xls in a hard rain and in pooled street water, the wash from other cars caused my aircondition belt to get wet and the defogging system to go off immediately, result in a complete lack of visibility. The service managerat the dealers said this was a usual occurence and not a part failure, but an engineering defect, and not correctible.

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3 Defogger problem of the 1998 Toyota Avalon

Failure Date: 12/10/2003

An alldata technical service bulletin issued 12/03/1999: "a/c - atc system intermittently fails/becomes inoperative. Auto a/c system improvement. Introduction: a production change has been made for the 1998-1999 Avalon a/c amplifier. The internal locic has been corrected to eliminate excessive air inlet servo motor travel, which may effect the motor and/or the servo link. Vehicles with automatic a/c may intermittently experience one or more of the following conditions: 1)the ambient temperature display may go blank; 2)fresh/recirc indicator light inoperative; 3)mode indicator light inoperative; 4)blower indicatior inoperative. Note: a/c system may restore to normal condition upon cycling the ignition switch. All applicable vehicles: all 1998 model year Avalon xls produced before VIN:4t1bf18b*wu273780. " I first experienced this problem in summer of 2003. A local Toyota dealer denied knowledge of the problem. Eventually isolated the problem and alldata bulletin with through an independent mechanic. Notified Toyota corporate, who is aware of the problem and unwilling to cover the costs to correct: $800 per independent mechanic & $1,000 per local Toyota dealership. During the summer, the atc failures created potentially dangerous driving conditions as windows quickly fogged and visibility dropped to zero. Currently, the atc system has failed and has not restored by allowing the car to sit and cycling the ignition switch, creating inability to DE-ice and DE-fog the car windows. All evidence indicates: 1)problem is caused by incorrect internal logic of the a/c amplifier, not normal use/wear of the vehicle; 2)Toyota is aware of the problem and is unwilling to be held accountable; 3)the problem quickly and unpredicably has created dangerous driving conditions for this and others drivers, as indicated by their NHTSA complaints. Please initiate an investigation and recall, holding Toyota accountable for the defective nature and failure of this product.

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4 Defogger problem of the 1998 Toyota Avalon

Failure Date: 12/04/2003

1998 Toyota Avalon. The climate control randomly quits working. No heat,no air, no defrost no blower. Causes a dangrous situation is you need the defroster and it doesn't work.

5 Defogger problem of the 1996 Toyota Avalon

Failure Date: 10/22/2003

During the winter season the defroster failed. Consumer had to use the air conditioner to defrost the windshield.

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6 Defogger problem of the 1998 Toyota Avalon

Failure Date: 06/17/2002

A/c climate control shuts itself off automatically after a short period usage. The outside temperatur eindicator,fan speed,ventilation direction, and outside air recirculation controls all go out. Almost gotten into an accident when the windshield a/c defrost did not work due to this problem. Still under the milage warranty(>36000), and went to Toyota dealer and was quoated $900 to get this problem fixed. Will contact Toyota customer service next.

7 Defogger problem of the 1998 Toyota Avalon

Failure Date: 06/17/2002

A/c climate control shuts itself off automatically after a short period usage. The outside temp. Indicator,fan speed,ventilation direction, and outside air recirculation controls all go out. Almost gotten into an accident when the windshield a/c defrost did not work due to this problem. Still under the milage warranty(>36000), and went to Toyota dealer and was quoated $900 to get this problem fixed. Will contact Toyota customer service next.

8 Defogger problem of the 1998 Toyota Avalon

Failure Date: 12/06/2001

No, summary listed for abov evehicle.

9 Defogger problem of the 1998 Toyota Avalon

Failure Date: 06/12/2001

The complete shutdown of the entire air circulating system including front defrost/defog, heat and air conditioning is documented in a service bulletin to Toyota dealers from Toyota, yet Toyota refuses to pay for the repair the vehicle if it is past the warranty period. Even though it creates a dangerous condition in not being able to defog or defrost the front windshield.

10 Defogger problem of the 1998 Toyota Avalon

Failure Date: 01/15/1999

This system malfunction is a serious harzard. When the electronic temperature control system fails, the defroster also fails. The loss of defroster has put me in jeopardy many times during poor weather. Because I don't know when the failure will occur, and only own one car, I can't choose not to drive when the poor weather conditions occur.

11 Defogger problem of the 1996 Toyota Avalon

Failure Date: 11/01/1998

When the defogger is turned on the windows start to fog up, obstructing the view of the driver. Dealer has been notified.

12 Defogger problem of the 1996 Toyota Avalon

When defrosting, a/c fails, hot air comes out of window vents and window fogs up making driving impossible. Yh.

13 Defogger problem of the 1996 Toyota Avalon

Vehicle instantly fogs up front and side windows without air conditioner running. Causing serious obstruction of view. Air cond. Should not have to be used in the winter in order to keep windows clear. Several near collisions on freeway.

14 Defogger problem of the 1998 Toyota Avalon

Problem with ventilation system--burntout wires in the automatic climate control module caused total failure of the entire ventilation system.

15 Defogger problem of the 1996 Toyota Avalon

Windows in the vehicle continually get fogged up on the inside, when cleaning it takes at least 4 times to get emollients from windows. The owner is concerned that this may be dangerous for consumer to inhale.


Other Common Visibility related problems of Toyota Avalon


Safety Ratings of Avalon Cars
Fuel Economy of Avalon Vehicles
Avalon Service Bulletins
Avalon Safety Recalls
Avalon Defect Investigations