Three problems related to brake master cylinder have been reported for the 2004 Honda Accord. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Honda Accord based on all problems reported for the 2004 Accord.
Brake pedal is soft and spongy. Have had brake fluid and master cylinder replaced but air seems to be getting into hydraulic system. Have called attention to Honda service personnel of service bulletin 07_045 but srvice rep disclaim any problem. I am fearful of total brake failure and possible airbag explosive deployment!.
The contact owns a 2004 Honda Accord. While driving 30 mph, the brake pedal went to the floorboard when depressed and the vehicle pulled to the right. The contact stated that the abs engaged. The dealer was unable to diagnose the cause of failure. He felt that the bypass valve on the abs modulator caused the failure. The dealer re-inspected the vehicle and replaced the abs modulator. Approximately two years later, the failure recurred. As of August 7, 2007, the dealer has not repaired the vehicle. The failure mileage was 15,000 and current mileage was 57,500. Updated 01-15-08. The consumer stated 2 abs modulators have been replaced and 2 master cylinders replaced by the dealer. The failure started with a soft brake pedal and over time it became worse. When the problem occurred, the vehicle would pull hard to one side and/or the abs modulator would activate when braking power was established. Updated 12/12/07.
The brake light came on (247 miles on the odometer, brand new car) and as I was driving to the dealership after consulting with them on the phone, the brakes completely gave out. Problem was "fixed", now the brake light is on again at 817 miles.