I've a 2006 GS450h with 115k miles and full Lexus service history with the local Lexus dealer having carried out the past two services - a major and an interim.
Other than many frustrating rattles and squeaks with the car and an annoying valve rattle the dealer cannot seem to fix the car has run well over the last 12 months of ownership and I regularly get an average of 35mpg on a mixed run.
Earlier this week during rain (after several weeks of dry) when being stuck in traffic for 30 mins a "Check Hybrid System" error appeared on the dash but the car continued to run as normal of engine and battery.
I took in to in Poole Lexus yesterday and they've just called to say that the hybrid system has failed (receptionist wasn't clear if it was batteries or other part) and that the bill was going to be several thousand £'s but they didn't have a final figure as they wanted to speak with Lexus to see if they would contribute anything towards it.
It seems odd that the system would fail but continue to run normally so has anyone else experienced this?
Also, as the car has had its last 2 services at the main dealer my understanding was that they do a health check free with the service and then warranty the system for another 12 months - does this sound correct?
My only concern is that the dealer has never provided me with a hybrid health heck report so I'm starting to wonder if they actually did the test on the last two services!?
Any advice would be greatly appreciated.
Cheers
Simon G
I had this issue on my hybrid.
It turned out simply to be the 12v Battery. the one that also lives in the boot passenger side.
It turns out that the 12v Battery supplies the electricity to the hybrid electronics and my theory is as follows.
The 12v Battery held enough voltage and everything was working fine so at first I did not suspect it as the cause.
I removed it and charged it at home and when I put it back in the car everything was fine. The "check hybrid system" and the CEL light turned off.
I noticed that the cells in the 12v Battery had allot of sulphation so I suspect that the internal resistance of this Battery is quite high.
And the lexus is not happy and not able to charge this Battery adequately.
I have since replaced the Battery and everything still remains fine.
Advice Needed - Gs450H Hybrid System Failure
in Engine & Transmission
Posted
I had this issue on my hybrid.
It turned out simply to be the 12v Battery. the one that also lives in the boot passenger side.
It turns out that the 12v Battery supplies the electricity to the hybrid electronics and my theory is as follows.
The 12v Battery held enough voltage and everything was working fine so at first I did not suspect it as the cause.
I removed it and charged it at home and when I put it back in the car everything was fine. The "check hybrid system" and the CEL light turned off.
I noticed that the cells in the 12v Battery had allot of sulphation so I suspect that the internal resistance of this Battery is quite high.
And the lexus is not happy and not able to charge this Battery adequately.
I have since replaced the Battery and everything still remains fine.