Rx400H Awd Rear Diff Problem - Help / Advise Please

[ramsascooby]

Hi,

I'm posting on here as there are far more rx400h's in the U.S.A and you may be able to oofer help and/or advise I can'r seem to get in the U.K.

I have a 2006 rx400h, with has covered 120,000 miles without a hitch until 2 weeks ago.

I got the check hybrid system light come on.

I had this checked by a recovery service ( the A.A) and the fault code was - Drive Motor "B" position sensor circuit - POA 45.

This was message cleared by therecovery service guy, the car was o.k for approximately 50miles then the same

Check Hybrid system indication came back on along with check vsc system and check awd system.

The car drove normally and was charging and using the battery as per normal.

I took it to my nearest lexus dealer and the checked the fault log and got the same fault code - Drive Motor "B" position sensor circuit - POA 45.

They have told me that they have checked the circuit connections and all is o.k, but if it comes on again I will need the rear Differential replacing!!

Their diagnosis seems rather dramatic and very expensive £2300 ( $3500).

My questions are

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