Four problems related to brake master cylinder have been reported for the 2007 Toyota 4Runner. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Toyota 4Runner based on all problems reported for the 2007 4Runner.
The braking system vibrates and squeals when driving and braking. . . Told the abs/master cylinder system needs to be replaced at the cost of $3082. 25. Started noticing problems at about 128000 miles on vehicle. Doesn't seem right that there is a major malfunction/repair needed with such low mileage.
The dashboard alarm sounded and the abs, vsc, brake, and traction control warning lights illuminated. This was followed by complete brake failure. Fully depressing the brake pedal would not stop the vehicle. Dealer diagnosed a failed master cylinder assembly.
The contact owns a 2007 Toyota 4runner. The contact stated that while driving approximately 30 mph, the brake pedal was depressed and abnormally traveled to the floorboard. The contact mentioned that the emergency brake was used in order to stop the vehicle. The vehicle was taken to a dealer where it was diagnosed that the master cylinder abs ecu assembly needed to be replaced. The manufacturer was notified of the failure. The vehicle was not repaired. The approximate failure and current mileage was 102,000.
Purchased pre-owned 4 runner ?certified? from russel Toyota 12/07 with approx 21k miles. Complained of unusual brake performance immediately but was told the vehicle was ?performing to factory specs? brake performance issues including aggressive stopping, stiff pedal, loss of pressure, and random ?anti-skid system? responses nearly caused a few accidents. On 3/14, approx 23k miles, complete brake failure, no pressure, accident avoided and coasted vehicle to a stop, pressure did not return. 4runner towed to dealer, master cylinder was ?internally leaking? and replaced. Symptoms continue and vehicle is completely unsafe. Numerous attempts have failed to re-produce the intermittent problem at the dealer and therefore the dealer keeps saying there is nothing wrong. Vehicle is unsafe and Toyota unwilling to help and referred us to ncds dispute resolution program or told us we can file a suit. This vehicle is unsafe and should be replaced. Breaks continue to fail/malfunction approximately 1 time per week. Dealer always says no problems found.