a href="http://www.automobilemag.com/toyota/prius/2010/">2010 Toyota Prius and 2010 Lexus HS 250h
The Problem: Due to vibration, the brake pressure accumulator could develop a fatigue crack on an internal part. Toyota has yet to disclose what could happen if the accumulator cracks, but has stated that there have been no reported injuries or accidents related to the problem.
The Fix: Owners will be notified by mail to have their vehicles inspected. Dealers will inspect the brake booster pump assembly; certain pump assemblies may be equipped with an accumulator that has (or could) crack. If this is the case, the dealer will replace the pump assembly free of charge.
Number of Vehicles Potentially Affected: A total of 242,000 vehicles worldwide – roughly 87,000 of which are U.S.-market 2010 Toyota Prius models produced between March and October 2009 and 2012 Lexus HS 250h hybrids produced between June and October 2009.
The Problem: Certain ATS, XTS, and Impala sedans may have brake lamps that flash intermittently without the driver depressing the brake pedal. These vehicles could also have the cruise control disengage. If the brake lights do not illuminate as intended, it could potentially cause a following driver not to decelerate and crash.
The Fix: General Motors will notify owners starting June 7, 2013 and have dealers reprogram the body control module. Owners can contact Chevrolet at 1-800-630-2438 or Cadillac at 1-866-982-2339 regarding recall number 13158.
Number of Vehicles Potentially Affected: A total of 1627 vehicles are being recalled; however, GM has not broken out the distribution between the 2013 Cadillac ATS, 2013 Cadillac XTS, and 2014 Chevrolet Impala models.
Source: Toyota, Automotive News (Subscription required), NHTSA