Brake Disc Caliper problems of the 2003 Toyota 4Runner

Only a few months after complete front brake replacement:rotors, calipers, pads,when braking at high speed downhill on good highway, the vehicle began vibrating strongly. Stopped at mechanics to have it checked. I had the tires balanced and rotated. Left front brake rotor was extremely hot, diagnosed as warped rotor. Replaced under warranty,caliper and rotor again. Now only a few thousand miles later the vibration is back again. This should not be. This has all happened within the past 15000 miles. Something more is wrong that is causing the brakes to malfunction but I don't see what it is.

Continuous brake caliper issues with then locking up causing them to prematurely wear out rotors and pads. Now with the cause of this issue, lost brake pressure all together almost causing me the driver create an accident in an intersection that could have been a devastating outcome. The vehicle only has 155000 miles, this should never have happened, I've already paid it off pocket alot of money for the brake caliper issue that I could have bought a newer vehicle. This needs to be investigated closely.

Tl-the cotnact owns a 2003 Toyota 4runner, the contact stated while having routine maintenace was informed there was execessive rust on the frame and several holes. There were no warning lights illuminated. Additioanlly, the calipers were sticking and the oil pan was rusted however the contact completed the repairs. The vehicle was taken to ramey Toyota 135 frazier dr, princeton, wv 24740( 877) 825-2186 where diagnosed the frame needed to be replaced. The vehcile was not repaired. The manufacturer was not contacted. The failure mileage 55,000. Ap.

Front brake caliper pistons seized up causing me to go through a stop light. See enclosed video. Please review all the complaints regarding Toyota 4runner caliper pistons seizing up. This is a serious design defect that requires your immediate attention.

My front brake calipers continue to freeze or seize and causes the brake pads to stick to the rotors. This is the third time this has occurred since I owned the truck. Recently, upon replacing the both front calipers, brake pads, and rotors, after bleeding the brakes the brake system now only worked in the front brakes and not the rear brakes.

2003 Toyota 4runner has 3 faulty calipers 2 on front and one on the rear. The caliper uses a dual piston and the interior lower piston is the one that failed on both front calipers. This issue is know to thousands of Toyota owners who inquire (its common knowledge among those who own them. ) the fact that both failed at the same time was incredibly dangerous I live in the mountains and losing both front brakes simultaneously is cause for great concern my safety is at risk as well as the safety of my passengers and everyone else. I am not sure why it has taken soo much effort from us (the owners of said vehicles and therefore caliper) to get this looked into. The calipers are of a faulty design and will fail prematurely putting human lives at risk. What more do you need? a person to die before this becomes credited information? just check out t4r. Org to find any number of identical claims.

Took vehicle in for front brake replacement at 121,679 miles. First set of front brakes were replaced at 70,452 miles. Tech called to inform me that front calipers were frozen and would require replacement. Seems to be a relatively common occurrence for high mileage 4 runners. Same time had right axle boot replaced as well. $1,118. 00 for the whole job! of course I almost keeled over but had to have the work done, and wanted dealer to perform the work so I wouldn't have issues later if anything went wrong. Have had all work done at this dealer and they've stood behind all their work, but was still a bit disappointed that the front calipers were shot. Car has always been garage kept, and kept clean, inside and out. In fact, still looks like a new car.

Lower inboard front brake caliper pistons on both sides of the vehicle corroded to the point of being frozen and non-functional leading to excessive braking distance and wear of brake components. Calipers are non-rebuildable and had to be replaced with remanufactured calipers by raybestos. Brake pads and rotors damaged to point of needing to be replaced also.

While driving front abs does not seem to be activating. Braking distances worsened as my 03 4runner was driven. It turns out a piston in the brake calipers had frozen costing over $650 in repairs to replace the calipers. This is a constant problem. . Read more...

While driving I noticed that my front abs would not activate in an emergency situation. Braking distances became a lot longer. When I went to check my front brakes, I discovered that the front lower brake piston had frozen. It was the same for both sides. Took it into the shop, and they said the same thing. They wanted to replace the caliper on both sides for a total of $750. I did it mysef. . Read more...

I purchased my vehicle in February of 2010. I have had to replace both front brake calipers three times each. I had to have both rear brake calipers replaced twice each. Currently my right rear brake caliper is malfunctioning. All of my brake calipers have been seizing up and the cost to have them repaired is expensive. This is a serious safety issue along with an expensive one. I have read numerous internet complaints about this particular vehicle edition having brake problems and the company will not address it. Something needs to be done such as redesigning the brake calipers for this particular vehicle. Thank you.

2003 Toyota 4runner awd v8 with ~99,990 mileage. Front brake caliper inner pistons seized and inner front brake pads failed to apply for indeterminate time period (approximately 3 years and 30,000 miles). Heavy corrosion of caliper contact surfaces also prevented normal travel of oem replacement inner brake pads. Resulted in reduced braking force and intermittent brake pedal pulsation due to thermal imbalance of the rotors. Passenger side inner rotor surface corroded because no brake pad contact was occurring. Probably contributed to front wheel bearing premature failure due to unbalanced braking force on the brake rotors and inordinate torque on the bearing assembly. This vehicle has the original factory brake fluid (I. E. , the hydraulic brake system has never been flushed. ) this is a permanent failure of the braking system in this vehicle. Replacement of calipers is anticipated. Failed calipers could be made available for inspection but will ultimately be returned for core charge.

2003 Toyota 4runner (v6-4wd) had 2 frozen front brake calipers. Had the brakes checked bc intermittent squealing noise and increased braking distances. On each side: outer brake pad barely had anything left (literally less than paper thin) + inner brake pad looked great bc never really used since calipers frozen. Needed both front brake pads and rotors replaced, along with 2 calipers (1 each side). So I basically had no front brakes for months and no way to tell unless someone notices the outer pads are worn and goes to replace them. Poor design leading to safety issue.

1. Right front brake caliper froze. Toyota replaced free of charge. 2. Left rear brake caliper froze on 05/05/2010 at 95, 988 miles. My cost $490. 73. Left front brake caliper froze on 11/22/10 at 102,712 miles. My cost $470. 40. Toyota claimed no responsibility as there was no required recall on that part. They treat brake calipers like tires and brake pads. I know that calipers should not fail. A frozen caliper can reduce braking efficiency by 25 % plus cause instability during braking. I believe the average owner does not know that calipers should not freeze up, so they are buying Toyota's denial as appropriate. Updated 01/20/11.