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Brakes Published 26 Jun 2013 Ref JP-1131850

Lexus/Toyota: IS250 / IS300h / IS350 +1 more

Translated from Japanese · machine translation

Safety-critical recall — brakes. If your vehicle is affected, contact your dealer before driving.
Country
Japan
Published
26 Jun 2013
Units affected
18428
Reference
JP-1131850

Affected vehicles

Lexus IS250 2012–2013 Lexus IS 300h 2012–2013 Lexus IS 350 2012–2013 Toyota Crown 2012–2013

Hazard

The obstacle detection software for the millimeter-wave radar in the pre-collision safety system (forward collision mitigation system) is inadequate, causing the system to occasionally misidentify diffuse millimeter-wave reflections as obstacles ahead. This may cause the automatic brakes to engage unnecessarily, resulting in unexpected sudden braking.
Show original (日本語)
前方障害物衝突軽減装置(プリクラッシュセーフティシステム)において、ミリ波レーダーによる障害物検知ソフトが不適切なため、乱反射したミリ波情報を稀に前方障害物と誤認識し、衝突の可能性がないのに自動ブレーキが作動して、予期せぬ急制動がかかるおそれがある。

Remedy

Update the obstacle detection software in the subject computer for all vehicles.
Show original (日本語)
全車両、当該コンピュータの障害物検知ソフトを修正する。

Official source

View the official recall notice