Lexus IS250 2006, Owner'S Manual

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2-4. Using other driving systems
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If the cruise control indicator light flashes
Turn the ON-OFF button off once, and then reactivate the system.
If the cruise control speed cannot be set or if the cruise control cancels immediately
after being activated, there may be a malfunction in the cruise control system. Have
the vehicle inspected by your Lexus dealer.
CAUTION
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To avoid operating the cruise control by mistake
Keep the ON-OFF button off when not in use.
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Situations unsuitable for cruise control
Do not use cruise control in any of the following situations.
Doing so may result in control of the vehicle being lost and could cause serious or
fatal accident.
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In heavy traffic
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On roads with sharp bends
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On slippery roads, such as those covered with rain, ice or snow
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On steep hills
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On winding roads