IS 250 Issues
1) Engine running rough first thing in morning for last week
2) Check VSC Warning Message
3) Malfunction indicator Lamp is on
4) Master Warning Light is on (not Flashing)
5) Slip Indicator Light on (not Flashing)
Suspect:
Valve Lifter Issue - Random misfire on #1
or
O2 Sensor
Action Item
Check Gas Cap
connect a scan tool to the diagnostic connector and read the DTC code
Result
Gas Cap Functional
DTC Code result: #3 Cylinder misfire, engine computer wrote code to compensate. This turned off the VSC/ABS/TRAC.
Action Taken
Lexus reset code (doesn't recommend disconnecting battery)
Misfire could have been bad fuel, sensor issue, or computer issue
Next steps
Wait for problem to occur again and bring the car back to Lexus (ugh)
