Lexus 2012 RX450h Owner's Manual page 259

2-2. Instrument cluster
CAUTION
If a safety system warning light does not come on
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Should a safety system light such as the ABS and SRS warning light not come on
when you start the engine (RX350) or hybrid system (RX450h), this could mean
that these systems are not available to help protect you in an accident, which could
result in death or serious injury. Have the vehicle inspected by your Lexus dealer
immediately if this occurs.
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