Toyota's US unit has announced a 'voluntary recall' of 2010 Prius and Lexus HS 250h Vehicles to update ABS software and will also check a power steering hose installation on some 2010 Camry models.

The software update affects 133,000 Prius and 14,550 Lexus HS 250h vehicles.

Toyota said a running production change for the Prius was introduced last month, improving the ABS response time, as well as the system's overall sensitivity to tire slippage and the production change for the HS 250h is planned for later this month.

"We're committed to doing everything we can - as fast as we can - to restore consumer trust in Toyota, and these recalls are part of this effort," said Jim Lentz, president and COO, Toyota Motor Sales. "We regret the inconvenience this recall will cause to Prius and HS 250h owners, and will do our best with the support of our dealers to make sure that it is conducted in the most trouble-free manner possible."

Lentz added: "As part of the quality improvement program announced by Toyota president Akio Toyoda last week, our company is undertaking a top to bottom review to ensure that our vehicles meet our own high standards of safety and reliability, now and for the future. We are taking steps to implement more stringent quality control across the company, to investigate customer complaints more aggressively and to respond more quickly to any safety issues we identify."

The recall will allow Toyota dealers to perform the software update on 2010 Prius vehicles sold prior to this running production change. Only Prius vehicles produced since May 2009 and all HS 250h vehicles are subject to this recall. First- and second-generation Prius vehicles use a different ABS and are not involved in the campaign.

The ABS on the Lexus HS 250h is similar in design to the Prius. The software adjustment planned for HS 250h production and dealer modification is being finalised and will be announced very soon.

Toyota will begin mailing letters to Prius owners included in this recall next week and HS 250h owners within the next few weeks, to let them know when to bring their vehicles into a dealership. Owners will only receive a letter if their vehicle is involved in the recall.

Separately, Toyota will conduct a voluntary safety recall on approximately 7,300 early production 2010 Camry models with the four cylinder engine to inspect for a power steering hose that may be in contact with a front brake tube. This contact could lead to a hole in the brake tube and cause a brake fluid leak, increased brake pedal stroke and greater vehicle stopping distance.

Owners of the involved 2010 Camry vehicles will be notified by mail starting in the middle of February.