2008 Lexus RX400h Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2008 Lexus RX400h
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2008 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.
2008 Lexus RX400h QuestionsMy hybrid battery is draining very fast when I have my AC on. Why? It goes from almost full to just about empty within a min. Will the hybrid battery die while driving? (1 answer)
I was on the highway, in traffic, driving like I normally do, except I had the AC on. I noticed that the Hybrid battery Icon drained to almost nothing within a min. Is the battery malfunctioning? Can the battery completely drain while I am driving,. I had to shut the AC off (sweat ) and then the ...
2008 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.