2011 Toyota Camry: adaptive cruise control problems

Filed Mar 11, 2014 · Acceleration · 34,000 miles · OH

Tl* the contact owns a 2011 toyota camry. The contact stated that while driving approximately 50 MPH, the vehicle would not decelerate when the contact removed pressure from the accelerator pedal. The failure also occurred when the cruise control function was activated. The contact would apply the brakes when using cruise control, the cruise control indicator light would shut off but the vehicle would maintain the set speed. The failure only occurred in 10 degree weather or below. The vehicle was neither diagnosed nor repaired. The contact notified the manufacturer of the defect. The VIN was not available. The failure mileage was 34,200.

Filed Sep 10, 2012 · Acceleration · 4,000 miles · NY

Tl* the contact owns a 2011 toyota camry. The contact was driving up an incline approximately 55 MPH with the cruise control activated; however when driving down an incline the cruise control failed to maintain the set speed. The vehicle was taken to an authorized dealer who informed the vehicle performed as designed. The manufacturer was notified of the problem. The approximate failure mileage was 4,000. Updated 10/10/12 *cn updated 10/17/12

Filed Apr 30, 2012 · Acceleration, Steering · 6 miles · IL

Ever since I bought the car (4 cyl., xle) a year ago: automatic transmission shifts sometimes slowly after a pause or unexpectedly and abruptly as it searches for gears, and it races intermittently, especially at start-up; it coasts a few inches after I put it into park, even on level ground. Power steering requires constant correction, even on level road surfaces. Cruise control is slow to respond to adjustments from lever on stem. Dealer's service dept. Claims, after 4 attempts to diagnose, that the car performs as designed, so my complaint will need to be with the design.

Filed Feb 26, 2011 · Electrical · 3,000 miles · SC

At speeds between 40 and 75, when the engine is lightly loaded, the computer controlled throttle cannot decide if it ought to be slightly open or completely closed. The worst case is when trying to maintain speed down a gentle hill. The throttle cycles intermittently between off and on. When the throttle shuts, the tach will suddenly drop about 150 RPM and the car noticeably decelerates. Often, after a few seconds, the computer seems to realize that the throttle shouldn't be all the way off, and commands the engine to speed up. Engine speed then jumps about 200 RPM, with an annoying surge and drops back about 50 RPM a second or so later. Occasionally the system would not 'wake up' and I would have to apply throttle to get the car to return to the desired speed, at which point it would accelerate through my target speed and I would back off, only to have the cycle repeat. Occasionally when attempting to decelerate, with my foot completely off the throttle, the car would continue to hold speed as if on cruise control. At one point, I proceeded about a half mile at 60 MPH with my feet flat on the floor. Several times, I had to step on the brakes to keep from overrunning traffic ahead when the engine did not respond to reduced throttle. When decelerating to a stop from cruising speed (above 50 MPH), particularly down a hill, after the throttle had initially closed, the vehicle would decelerate normally to about 40 MPH, at which point engine speed would suddenly increase about 200 RPM and the vehicle would begin to gently accelerate. These uncommanded throttle excursions were mild. When the vehicle did not decelerate as commanded, speed could always be reduced with light brake application. But, the problem is consistently annoying and is a symptom that the computer controlled throttle system is not working properly in this vehicle. This rental car exhibited the problem consistently for a week. No check engine light.

Filed Jun 2, 2010 · Acceleration · CA

2011 toyota camry le. Consumer states vehicle suddenly surged forward while driving *tgw the consumer stated when he used the cruise control feature, the vehicle suddenly surged to a speed just over 75 MPH, even though the cruise control was set at 70 MPH. After braking back to the desired 70 MPH, he continued to drive. The consumer stated the incident happened a second time, and the vehicle accelerated to 80 MPH.