My ABS and brake warning lights came on at the same time on my 2007 Yaris sedan. The manual states to contact the dealer immediately in this situation. The ABS is disabled in this situation. The problem was a left rear wheel speed sensor shorted (code P0215). Due to excessive corrosion on the connection the wiring harness was also replaced. The replaced parts were 89544-02070 (sensor, skid control) and 89516-52100 (wire, skid control). The amount of corrosion on the sensor and connecting wires on the Yaris point to a potential design issue. As it turns out this is a common problem on 2007 and 2008 Yaris's. Toyota has issued a tbs, thus they are aware of the problem. The problem appears to develop when the cars are driven in winter conditions..I.e. snow...as was the case with mine Yaris. Other owners have had ABS systems operate improperly as a result and experienced braking problems.

- Oak Harbor, OH, USA

2007 Toyota Yaris -- ABS and brake issue (defective speed sensors) this appears to be a common problem, and unfortunately, my vehicle is also affected. This is mentioned in Toyota service bulletin tsb-0120-08, but Toyota is unwilling to fix my defective speed sensors without charging ~$700.

- Cliffside Park, NJ, USA

ABS malfunction on my 2007 Toyota Yaris.

- Ashland, KY, USA

I own a 2007 Toyota Yaris, purchased August 2006. The brake and ABS indicator lights starting coming on intermittently in December 2009 (often when it was raining or snowing outside), my dealer said that this was caused by an issue with the right rear speed sensor, and shouldn't indicate any actual problems with the brakes. However, soon afterward (January 2010), I started experiencing brake problems---the brake pedal would shudder or vibrate occasionally, even when I was driving on a smooth surface at low speeds. Even pumping the breaks, I had trouble stopping and slid through a stop sign more than once. My dealer said this indicated that the ABS was kicking in when it shouldn't, and recommended a $600 replacement of the right rear speed sensor. I got this repair done, and the problem seems to be solved.

- Saint Louis, MO, USA

Thirteen months have passed and now I have a failure of the left rear wheel speed sensor to match the failed right rear wheel speed sensor that was replaced. The repair action will be to replace the sensor and wiring harness. Due to excessive corrosion, the dealer is recommending replacement of both the left and right rear wheel speed sensor wiring. This will be the third rear wheel speed sensor failure on two Yaris that I have had to deal with in 14 months. The cold weather and salt used on the roads during a snowy winter appear to wreak havoc on the connection between the wiring harness and the rear wheel speed sensors on the Yaris sedans. A little internet research will lead you to the conclusion that this is a very common problem in Canada or anywhere where salt is used on the roads in winter. Since this problem does not present itself on the corolla in the same way, then there must be a design issue on the Yaris. A proper water/weather tight connection between the wiring harness and the rear wheel speed sensors would solve this issue. This is a safety issue as the intermittent connection causes erratic operation (if any) of the ABS on these models. I believe there is a tsb released on this subject, but no recall. Consumers (me) are footing the bill for this defect. Three times and counting.

- Harpers Ferry, WV, USA

My ABS and brake lights came on at the same time on my 2007 Yaris sedan. The manual states to stop driving the car and contact the dealer immediately. The car is a daily commute car with 75,000 miles at the time. The problem was an internal failure of the right rear wheel speed sensor. The dealer replaced the sensor (part number 42450-52060 / hub & brg assy R), and cleaned corrosion from the wiring harness where it connects to the speed sensor. The total repair cost was over $650. The amount of corrosion on a car just over 2 years old on the rear ABS wheel speed sensors shows a potential design flaw in this part and how it is attached on the Yaris vehicle line. This failure disables the ABS system and causes erratic operation. On one occasion on the way to the dealer while the ABS light was off I had a brake anomaly. I applied the brakes at a parking lot stop sign at slow speed (~5mph) and the ABS kicked in and I couldn't stop. The weather and street was dry. It took more than 25ft to stop! the corrosion at this connection is causing intermittent operation of the ABS system which is a safety concern.

- Harpers Ferry, WV, USA

This is more for info than a complaint. My brake service light and ABS service stays on my 2007 Toyota Yaris. With all the Toyota recalls this model is not on the recall list. I took it to my dealer to get repaired. They analyzed the problem and said a wire going to my brake had shorted out and causing the problem. I was told it was ok to drive and use the brakes. They had to order the parts to repair in a couple of days. I thought that I would let you know of my problem which may not be related at all with the other Toyota recall problems, but I don't really know.

- Paducah, KY, USA

A bad connector leading to the ABS speed sensor failed on our Toyota Yaris causing two warning lights to come on. Owners manual states to "stop immediately and contact Toyota dealer". ABS speed sensor was replaced at a cost of over $500 but in fact the problem is a corroded connector. Toyota and dealer stated that a technical serivce bulletin was issued regarding this problem. I was then told that because a "connector" not a "module" failed this problem in not subject to a recall. However, since manual says to "stop immediately" which freaked out my wife this clearly is a safety problem. Also, it should not take $500 to replace a faulty connector. I found a chat-room online where it became clear that many others are having this problem.

- Rosemount, MN, USA