One problem related to car stall has been reported for the 2007 Lexus Rx400h. The most recently reported issues are listed below.
While driving from florida to fairfax, CA the vehicle stalled ~10 time unexpectedly with loss of power brakes and power steering, making a very dangerous situation. The "check hybrid system and check vsc system" showed on the dash. Clearing the codes restarted the vehicle. I stopped in denver, CO at kuni Lexus of greenwood village, whom road tested the vehicle for 30 miles but were unable to duplicate the fault. Obdii dtc p3105 was read on my scanner before arrival. I have researched the failure more and found out on Lexus tis system; on 01/15/2014, Lexus of miami claimed to have completed safety recall 13v396000 (intelligent power module (ipm) solder failures) but they only diagnosed some other problems and did not have time to perform this recall, neither did the inform me of it! I stopped at Lexus of tacoma at fife, wa and they denied diagnosis due to minor body damage on the rear quarter panel where they claim water came in. This is not the location of water intrusion! the location is due to body seam cracks above that plain of the quarter panel damage, near the rear gate struts and hinges (see l-sb-0019-09), but they wouldn't look at that either and told me to go to their sublet body shop where the manager agreed with me that the water leaks into the high voltage battery pack/controller area was from the l-sb-0019-09 and not the quarter panel area. I sealed up all possible water intrusion areas and disassembled the hv battery pack area to see how much and where the water was (many photos) and dry it out with several days of sunshine here in fairfax, CA. I informed Lexus corp about the relative recall/sb and they denied to complete it! the vehicle is back together and I am waiting on your response. I can be reached by email (I don't carry a cell phone) thank you!.