The remote engine start function will not operate in extremely cold temperatures (-22 degrees F and lower). Our technicians tell us no repair should be attempted, this is normal operation for the remote engine start system in this vehicle.
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Repairpal verified 2010 Lexus RX350 problems
Various user interface issues regarding GPS, radio system, and heater controls, along with bluetooth operation have been addressed with a software upgrade. Our technicians recommend that if you have issues with these systems, checking for the latest software should be the first step in diagnoses.