2011 Toyota Prius: adaptive cruise control problems

Filed Feb 28, 2024 · Acceleration, Brakes · MI

The conditions listed in Toyota Customer Support Program ZJB for the brake booster and master cylinder occurred after the 10 year in service date on my vehicle. Brake, ABS, and Traction control warning lights turn on intermittently and when this happens brake response is poor and cruise control shuts off. When applying the brakes an audible tat tat tat sound can be heard from the front of the car that sounds like the ABS being triggered. You should have toyota recall impacted cars and fix the issue as outlined in the TSB and support campaign.

Filed Nov 13, 2015 · Electrical · 128,000 miles · CA

The spiral cable is defective, horn stopped working two weeks ago, cruise control stopped working last week. There has been alot of complaints about this cable. Toyota has had recalls for the tacoma and yaris that use the same part number. The air bag uses the same cable. This is a big safety issue. The cost to replace this cable is $890.00. Someone needs to look into this issue. What is the criteria for a recall, someone dieing.

Filed Aug 12, 2015 · Brakes · 42,000 miles · NM

Traction control and ABS warning lights came on. Cruise control stopped working. Took it to toyota who said codes indicated failure of master cylinder. Cost of repair $3,400. I think they have a defective part problem.

Filed May 17, 2014 · Electrical, Lights · CA

The instrument display is to dim to read in bright sunlight, especially when driving directly toward the afternoon sun on a clear day. My wife, who viewed the display as a front-seat passenger, agrees with me. To see how fast I was going, I had to take my eyes off the road and allow my eyes to adjust to the darkened display for several seconds. As a result, I was unable to maintain a steady speed on the hilly terrain. Despite my best efforts, my speed varied erratically between 70 and 80, more or less, on an interstate with a speed limit was 75. Despite my general misgivings about cruise control, I finally had to resort to it to steady my speed. The incident above was my worst experience, but viewing the display in bright sunlight has been an ongoing problem since the vehicle was new. Moreover, this was also a problem with a 2005 prius which we previously owned. This is a genuine safety hazard! The two vehicles mentioned above, at least, and possibly other toyota vehicles, need to be retrofitted with a display that can be readily seen in bright sunlight, but which can be adequately dimmed for night driving.

Filed Jan 9, 2013 · Acceleration · 20,000 miles · PA

2011 prius, USA equipment package five. 20000 miles driven -- recommended service done every 5000, including the 20000 service done less than 1000 miles ago. Eastbound on I-78, a few exits west of allentown pa. Speed limit 65, radar cruise set to 68 and default three-bars [max distance]. All was good for 30 or so miles of rolling hills and light traffic. Then, with no change in traffic density or average traffic speed, the prius started slowing down -- as would be quite appropriate if the driver ahead of me had eased up on the gas. 60, 55, 50, 45. Not quickly -- no where near as quickly as if I were to turn off the cruise. It was as though there was traffic slowing down ahead and the radar was just responding to it. But the traffic ahead was not slowing down. No beeps, no brake assist -- the prius just gently slowed down -- in fact, the 'car ahead' icon was still displayed on the cruise indicator -- but in reality, the car ahead was far beyond where 'car ahead' should have been displayed. He was still doing 65 while I was down to 45. I was watching ahead and behind me -- still wondering if the radar had seen something I was missing -- and didn't really resume active control till cars behind started to get close [I really was concerned the prius saw something I didn't!]. As the cars behind got closer, I just pushed down on the gas -- never de-activated the cruise -- and when back at 60 or so, the cruise again started to act 'normally'. There were no codes recorded, so I don't expect the dealer to even want to look at it. Toyota has not responded on this issue so far [other than to send spam advertising email].