One problem related to power assist brake hoses, lines/piping, and fittings has been reported for the 2004 Toyota Sequoia. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Toyota Sequoia based on all problems reported for the 2004 Sequoia.
My traction control, skid control, and abs warning lights continued to light up intermittently on my 2004 Toyota Sequoia. While the warning lights were on, the brakes would suddenly grab, make a terrible noise, then bring the car to a quick and sudden stop. I narrowly avoided 2 different car accidents because of the car suddenly stopping. I took the car to both a Toyota dealer and an independent car repair shop specializing in Toyota cars. Both reported this was a well known problem and that they had to repair this problem on 5 - 6 Toyota Sequoias per month. The diagnostic codes reported from the car's computer included co215 (lr wheel speed sensor malfunction), co1223 (brake pedal stroke force sensor malfunction), co1247 (abs system malfunction), and co1310 (solenoid circuit malfunction). The repair shop replaced both the abs/skid control ecu and active booster solenoid for a total cost of $2410. If this is a well known problem, why has Toyota not implemented a recall for this issue. It is a very dangerous condition affecting a large number of vehicles.