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brendangeorge

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brendangeorge last won the day on December 6 2015

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  • First Name
    Brendan
  • Gender
    Male
  • Lexus Model
    RX450h
  • Year of Lexus
    2012
  • UK/Ireland Location
    Northamptonshire

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  1. You cannot rely on the accuracy of GPS to keep you out of jail. There are a lot of variables and your car is moving fast. The legal requirement for speedometers (regulation) is: The regulation states that, when it comes to the acceptable margin of error for speedometers, that speedometers must never under-report a vehicle's speed, while it must never over-report by more than 110% of the actual speed + 6.25mph. I think this means your speedo could be indicating 82.5mph when you are at 70mph. I have a head up display that reads speed from the ODI II port. It does not always agree with the cars speedo. If you use your cars' speedo and drive the limit you should not get a ticket...........
  2. Hi Harry Check for codes - I had this problem on my RX450h and a new hybrid transmission oil pump was needed. The list price for a new pump is £850 plus fluid and a couple of hours to fit. I post about this problem a couple of moths ago. Good luck Bren
  3. The car's battery management system will take of charging it and balancing the cells. Charging to 100% will not impact the battery life and is needed to make sure the cells are balanced. The system will take care of that. If you managed to discharge the traction battery until it is flat you will be in bad shape because you need it to start the car. EV batteries are affected by temperature - Tesla worked this out and go the great lengths to control their battery temps - heat pumps for cooling (not just fans these days) and heating. The 80% charge issue is important to note because it is very bad to over charge these type of battery so a BMS takes care of it. You can fast charge a battery between 20% and 80% - at 80% the system slows down and has to balance the cells. Most people with EVs who use fast charges on the road stop at 80% because of the time to get to 100% from 80%. However, follow the instructions provided by the manufacturer and you will be fine. There is a lot of fun stuff talked about batteries. This may help to illustrate what a BMS does - it is not my car but Solar energy system. The blue lines are the 4 batteries charging - they go at full rate until 90% and then slow down an balance out to 100% We could so with some Sunshine 🙂
  4. Coventry Lexus wanted £179 to fit a new rear heat shield to my RX450h this afternoon when it was being serviced and MoT'ed. I declined.
  5. Hi RXboil The fault is the transmission oil pump - at first I thought it was the inverter coolant pump. The list price for the pump is £850 - you can get the genuine part part for £350ish. However, I was stuffed I had to get on the road immediately and my local independant Toyota/Lexus specialist in MK had one on the shelf. It was 2 hours labour to fit. The good news is the fault is fixed and the car runs better than ever. In the past if I put it in gear and accelerated quickly there was a little bump. Now it is as smooth as silk. The Lexus dealer did not deal with my request to investigate. £1K to sort it out. I expect it will be more at a Lexus dealer. The last time I talked to them they wanted £450 the change the front break pads and £660 to replace the rear disks and pads. I use independents these days. Good luck Bren
  6. Hi Adrian I spoke too soon! 15 miles in to my ride to the golf club the fault came back. The pump is running now because the coolant was hot. I need to have a look at the latest fault. Techstream tomorrow. Bren
  7. New inverter cooling pump fitted and everything is fixed now. £300 for the pump, £260 to have it fitted.
  8. I sourced a new assembly from Rock Auto for £400 delivered took - 3 days from the US.
  9. If the battery discharges on the drive way over night you have a fault or a bad battery. I put a new bat in just after Christmas and regularly leave my car sitting for two weeks with no probs. Over Christmas I left it for a month and the bat went flat - I charged it and it would only go to 75%. It still started the car OK - note it was the original 11 year old battery. Bren
  10. I have a 2012 RX450h and the wiper rack broke - I had to replace it. I think it was damage a few years ago when it was iced up. It is a pain when the wipers stop at 70 in the outside lane of a motor way when it is lashing down.
  11. Hi The tank capacity is the first fill capacity - there is part of the tank you cannot use. Sound daft but...
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