Brake master cylinder may need replacing at 125,000 miles on Toyota 4Runner

Problem Description and Possible Solution

At 125,000-150,000 miles, the Master Cylinder may need replacing. It is critical to adjust the brake pedal to Master Cylinder pushrod clearance or the brakes will drag and over heat.

Problem Data
RepairPal Verified
Average mileage: 149,642 (62,000–265,000)
9 model years affected: 1994, 1996, 1997, 1998, more2001, 2002, 2003, 2004, 2007
27 people reported this problem
Viewing 1 - 11 of 11 comments
ABS VSC and Brake light came on with a loud beeping noise. Power brakes went out shortly after. Brought it to Toyota and they said brake master cylinder needed to be replaced... $4500.
Happened on a nice morning, I was heading to the beach with my family. All of a sudden I hear a loud beeping noise. I was really freaking out! I tried to step on the breaks but it wasn't stopping. So I had to use the emergency breaks and try to make it to a auto shop. Went there, they scanned my 4runner and said it's my break master. They told me I needed to change out the whole assembly.
Son was driving and when he down to make a turn, he applied the brakes and he stated they were like a brick. Since he couldn't stop he proceeded to go straight and drop the car into second gear, then first and was then able to stop on the side of the road. I am still looking for a master brake cylinder or someone to do the job as i'm not willing to pay the dealership over $3500
Brakes failed completely towed to dealership, told whole master cylinder system needs to be replaced cost +$2500
Brake master cylinder failed drastically at lack of sealing pressed end cap of master cylinder, forward facing body.
Driving and tried to stop at a red light, car won't stop. Horrified, I tired to put the car in to low gear, turned on to a side street, and kept going until the truck finally stopped. Worst moment of my life - suddenly, out of nowhere, no brakes! I've been trying to find someone to do the repair for 5 months. I don't have $4000 and don't want to invest this much in my 2004 4Runner, if I'm going to have other expensive problems. I see plenty people have had similar problems, after its fixed, does the 2004 4Runner have other problems?
brake light on and off for days then stayed on permanently. took to my same mechanic at toyota i've used for 10 years; it's the master cylinder and $3000 to repair plus i needed back shocks done that i chose not to do last time..... sadly, the money i would put in to repair is more than the value of the vehicle... i will be looking for another toyota.
Original owner and second time replacing frozen calipers. Replaced master cylinder 3 years earlier and now brakes locked up, VSC light on and mechanic claims master cylinder bad again. Of course, Toyota claiming one year warranty on a $2k part
I have a 2004 Toyota 4Runner with 195K miles. While driving at 30mph, breaks failed and loud cabin alarm sound and dash lights on. I had to pull into the grass, apply emergency break and down shift to avoid a crash. Kids in vehicle. Had to tow to dealership. Independent mechanics would not touch it. Master cylinder replacement cost: $3,300.