Six problems related to brake sensor have been reported for the 2007 Toyota Yaris. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Toyota Yaris based on all problems reported for the 2007 Yaris.
The abs sensor is notoriously bad, and I had to stop suddenly and went into a four wheel slide because the abs stopped working. This needs a recall.
Any day, any weather, any road conditions. The road could be as dry as a bone. When I drive around a curve (it doesn't matter if I'm driving 45 mph, or 15 mph), the break pedal will engage on it's own, the steering wheel will lock, and a beeping alarm will go off. I have no control of the van. It will put me into oncoming traffic. Everyday. Everyday. Any time I drive this van. Multiple times a day for the last 15 months. Lots of $, and lots of trips to dealer and car repair shops. Can't figure out what is causing the problem, but it's a major problem. We tried new tires, changing wheel sensors, new brakes, adding fluid to steering wheel column, new axels. . . And the list goes on. Nothing fixes the problem. I've read a lot of similar stories on the internet. Lots pf people, same problem, and nothing is fixing the problem on anyone's van. There isn't a solution to a major problem.
Both the parking brake and anti-lock brake system [abs] indicator lights illuminated while driving and with the parking brake not engaged. The lights remained illuminated. Upon inspection of the rear skid control sensor and skid control sensor wire [part of the abs], I found both the passenger and driver's side assemblies to be very wet and dirty with mud both inside and outside the electrical connector between the wire and the sensor itself on the hub assembly. On the driver's side, the electrical connector pins were badly corroded. So much so, in fact, that one of the pins was broken and partially disintegrated. With the connection being corroded and broken, the abs will not function. The electrical connectors for the skid control sensor are not protected by any sort of guard or boot, they're just regular, plastic-housing connectors with no waterproofing, yet they're in a location on the vehicle which is very much exposed to rain, snow, mud, etc. During normal driving conditions. The connectors are very vulnerable to corrosion and damage from the elements being exposed in this way and their premature failure due to this exposure causes a loss of a safety feature of the vehicle, the abs.
The abs sensors on both back tires failed spontaneously (determined upon obd code reading from service station) resulting in the dashboard 'brake' and 'abs' lights illuminating intermittently. Since this spontaneous failure abs would activate at inappropriate times and at other times fail to activate when it should have. This created a major potential safety issue.
12/21/the weather conditions were 35f and raining. After a trip of about 8 miles my car was parked outside for a couple hours. Upon starting the car for my return trip I noticed that the dash indicators for abs and brake were lit and remained lit through the duration of my trip of about 8 miles. These indicators have never done this before. 12/22/(next day) when I started the car the indicators were again lit and remained lit. However, after driving a couple miles I noticed that the indicators were no longer lit. Research has indicated a known issue with the connectors to the abs sensors in the rear wheels for which Toyota eventually released a technical bulletin. In later years the connectors were redesigned to be more resistant to water and snow. There have been many occurrences of this problem in the northern us and canada. I feel that Toyota should issue an extended recall for this problem as they did for the issue with the corroded suspension bolts.
Abs and brake sensors are faulty. Abs not working.