2007 Lexus RX400h Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2007 Lexus RX400h
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2007 Lexus RX400h ProblemsRocking or Surging Feeling at Freeway Speeds of 70mph
Hybrid vehicles may notice a rocking or surging feeling at freeway speeds of 70mph. Our technicians tell us new software is available for the hybrid powertrain control module to correct this concern.
The Check Engine Light may illuminate with code P0AA6 stored for a hybrid battery isolation fault. Our technicians tell us this may be caused by water intrusion into the high voltage battery case. The water may be a result of cracking body seam dealer above the rear door strut mount. Any water leaks should be repaired and the high voltage battery system inspected for water damage and repaired and dried as necessary.
2007 Lexus RX400h QuestionsI recently had to replace the rear struts and mounts at my local dealership. Now the ride is much stiffer and I feel every bump. The car had a very smooth, cushy ride before this service. (2 answers)
Is there something that can be done? Did they use the wrong replacement parts?
i'm considering waiting until $130k before replacing
What is the mount? What is the cost to replace both of these? The repair is to Replace Rear Schocks and Mounts
2007 Lexus RX400h RecallsVarious Concerns With the Hybrid Drive System
Two of the main control modules for the hybrid drive system are the Inverter Module and the Intelligent Power Module (IPM), which is located inside the Invertor Module. The IPM can operate at temperatures high enough to damage its electrical solder connections. Damaged solder joints can result in illumination of warning lights, various drivability concerns, and possible stalling of the hybrid drive system. Dealers will replace the IPM on affected vehicles to correct this concern.
A module inside the hybrid drive inverter module may contain inadequately soldered transistors. These solder joints could fail under high electrical loads, resulting in illumination of various dashboard warning lights, drivability concerns, and/or engine stalling. If the vehicle were to stop unexpectedly, this would increase the risk of a crash. Owners will be notified in July 2011 if their vehicle is involved in this recall. They will received a second notice when parts become available. Dealers will inspect the hybrid inverter module production number to determine if the inverter contains the suspect transistors. They will replace any affected modules.
The floor carpet cover may interfere with the accelerator pedal if its forward retention clip is not installed properly. As a result, the throttle can become stuck in a partially open position, increasing the risk of a crash. Dealers will replace the carpet cover with a newly designed one. No owner notification schedule has been provided at this time.