One problem related to power assist brake vacuum has been reported for the 2004 Toyota Avalon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Toyota Avalon based on all problems reported for the 2004 Avalon.
Slow loss of brake fluid on 2004 Toyota Avalon xls. Dealer had to replace brake master cylinder and brake booster. Repairs were covered under warranty, however I feel that this was a serious problem and one that should be reported as there may be other vehicles with similar problem.
| Service Brakes problems | |
| Power Assist Brake Vacuum problems | |
| Brake Abs Warning Light problems | |
| Brake Master Cylinder problems |