Table 1 shows seven common visibility related problems of the 1998 Toyota Avalon. The number one most common problem is related to the defogger (eight problems). The second most common problem is related to the defogger controls (four problems).
| Problem Category | Number of Problems |
|---|---|
| Defogger problems | |
| Defogger Controls problems | |
| Power Window problems | |
| Windshield problems | |
| Side/rear Glass problems | |
| Blower problems | |
| Defogger Heater problems |
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. Read details...
1998 Toyota Avalon - without warning, the air conditioner/heater & fans quit working. This is intermittent. You never know when it is going to go out. This can be a safety issue if we are driving on the freeway, or anywhere for that matter, during a cold spell and the defroster suddenly goes Read details...
Electronic climate control and dash lights/warnings cut off without notice and cannot be restarted unless ignition turned off and allowed to sit >1min, dealer cannot identify specific problem recommends trying to replace module for $1200 although that may or may not fix problem, more frequent Read details...