
Over the last year i've had several emails from people around the world interested in how to properly diagnose their "Check PCS" problem. Most people have indicated that they had to replace the ECU, others seemed to have an intermittent problem with the power feed (alternator) or condition of the plexiglass cover. Regardless, this issue has been reported by owners of both the Lexus LS430 and the Lexus IS250. If equipped with PCS, anticipate a problem at some point.
Location of Lexus owners experiencing problems with the Pre Collision System found on Lexus cars including the LS430 and IS250.

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