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post #1 of 1 (permalink) Old 02-12-14, 01:33 PM Thread Starter
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Toyota recalls millions of Prius hybrids

Toyota Motor Sales, U.S.A., Inc., today announced that it is advising the National Highway Traffic Safety Administration (NHTSA) of plans to conduct voluntary safety recalls of approximately 700,000 Model Year 2010-2014 Prius vehicles and, combined, approximately 260,000 Model Year 2012 Toyota RAV4, 2012-2013 Toyota Tacoma, and 2012-2013 Lexus RX 350 vehicles sold in the United States to address two separate issues. •Toyota will update the motor/generator control ECU and hybrid control ECU software on certain Model Year 2010-2014 Prius vehicles

The software’s current settings could result in higher thermal stress in certain transistors, potentially causing them to become damaged. If this happens, various warning lights will illuminate and the vehicle can enter a failsafe mode. In rare circumstances, the hybrid system might shut down while the vehicle is being driven, resulting in the loss of power and the vehicle coming to a stop.
•Toyota will update the skid control ECU software on certain 2012 Toyota RAV4, 2012-2013 Toyota Tacoma, and 2012-2013 Lexus RX 350 models in order to address an electronic circuit condition that can cause the Vehicle Stability Control, Anti-lock Brake, and Traction Control functions to intermittently turn off. If these systems are off, standard braking operation remains fully functional.

Toyota has received no reports of accidents or injuries associated with either condition.

As part of these recalls, owners of affected vehicles will receive a software update free of charge. Owners will be notified by first class mail when the software updates are available at their dealers.

Detailed information is available to customers at Toyota Safety Recall and Car Service Information and by calling the Toyota Customer Experience Center at 1-800-331-4331.

Lexus customers can visit Lexus Recall Information or call the Lexus Customer Satisfaction Center at 1-800-25-LEXUS (1-800-255-3987).

Toyota UK

Toyota has announced a recall today for some of its current, third-generation Prius models to correct a potential problem with the hybrid system’s boost converter software.

The recall affects 30,790 UK-registered Prius cars. Worldwide, there have been no reports of any accidents or injuries relating to this issue. In Europe Toyota has recorded 11 field reports of the issue occurring.

The issue

Toyota has identified through its stringent quality reporting programme that there may be an issue concerning the software used to control the boost converter in the Intelligent Power Module, part of the hybrid system’s inverter assembly. The boost converter is required when driving with a high system load, for example when accelerating hard from standstill.

Toyota has identified that the software setting could lead to higher thermal stress occurring in certain insulated-gate bipolar transistors in the boost converter which may lead to them deforming or being damaged.

Should this happen, warning lights may be illuminated and the car is likely to switch to “failsafe” operation – it can still be driven, but with reduced power. In limited cases the hybrid system may shut down, causing the vehicle to stop. The driver will not experience any change in the vehicle’s behaviour or performance prior to the problem occurring.

Toyota can confirm that this issue will not occur in other Toyota hybrid vehicles, as these use different transistor structures and control logic.

The recall

All the vehicles affected by this issue are being recalled so that the control software can be updated.

Vehicle owners will be contacted by Toyota within the coming weeks by post or telephone and asked to make an appointment to bring their car to their nearest Toyota centre, in accordance with Vehicle and Operator Services Agency (VOSA) guidelines.

The software update will take about 40 minutes to complete; the work will be carried out free of charge.

Customers can check whether their vehicle is affected using a registration look-up function in the owners section of the main Toyota website.

If owners require additional information they can contact Toyota Recall Helpline on 0800 1388744.

Toyota Japan

With regard to the part of the vehicle Prius, has been reported to the Ministry of Land, Infrastructure and Transport to recall the following content to February 12, 2014.

In the hybrid system, since the control software is incorrect, you may be a high load when traveling, such as during acceleration, thermal stress of the unexpected is applied to the element of the step-up circuit. Therefore, the element may be damaged during use, alarm warning light lights up, and the motor drive of the fail-safe. In addition, if an electrical noise is generated when the device damage, there is a possibility that the hybrid system will stop and the non-traveling.

I will fix all the proof type vehicle, the control software.
If the warning light is lit element may damage control software modified to replace the module free of charge power converter (DC-AC inverter).

Prius vehicles affected in Japan: Roughly 997,000.

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