Lexus IS250 U Owner's Manual page 244

244
4-5. Using the driving support systems
Reduced effectiveness of the EPS system
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The effectiveness of the EPS system is reduced to prevent the system from overheating
when there is frequent steering input over an extended period of time. The steering
wheel may feel heavy as a result. Should this occur, refrain from excessive steering input
or stop the vehicle and turn the engine off. The EPS system should return to normal
within 10 minutes.
Operating conditions of hill-start assist control
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When the following four conditions are met, the hill-start assist control will operate:
The shift lever is in a position other than P or N (when starting off forward/backward on
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an upward incline).
The vehicle is stopped.
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The accelerator pedal is not depressed.
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The parking brake is not engaged.
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Automatic system cancelation of hill-start assist control
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The hill-start assist control will turn off in any of the following situations:
The shift lever is moved to P or N.
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The accelerator pedal is depressed.
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The parking brake is engaged.
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Approximately 2 seconds elapse after the brake pedal is released.
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IS350/250_U (OM53C50U)