Britprius

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Britprius last won the day on July 7

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About Britprius

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    Club Post Guru

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  • First Name
    John
  • Lexus Model
    GS450H
  • Year of Lexus
    2007
  • UK/Ireland Location
    Herefordshire

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  1. All batteries recover a little of there charge when used discharged. When you first go to get in your car as you approach the brake booster pump comes on to bring up the brake pressure. you then open the door the locks opening, and then put you foot on the brake bringing on the brake lights, and press the start button to boot the computers. All this uses the battery. If the voltage is to low the car refuses to go to ready mode. Leaving the car the battery recovers a little, and returning a short while later the brakes are already pressurised, and the battery has enough voltage to get to ready mode. John.
  2. The simple answer I am afraid is no it has to be a virgin fob. It can be done if the non working fob is reset, but this requires a specialist. The dealer cannot or will not do it. Once the fob is reset "check out ebay" the car can then be set to accept the fob via Techstream. There is a provisor that the fobs you have both have the same number printed on the back as I believe there are two different versions that look the same. The battery fitment on the two versions is different so this helps to see if they are the same fobs you have. John.
  3. The thickness of the disc is not an MOT failure even if it is below the minimum thickness due to ware. This is as long as the disc is not cracked, has pieces missing, or has serious pitting due to rust. New thickness is 30 mm. Minimum thickness is 28 mm. John.
  4. The noise is caused by the backing plate "dust shield" touching the disc. How do I know? Because I had exactly the same noise appear on my GS450H. The remedy is to simply bend the plate away from the disc with the wheel off the car. You should still be able to hear the noise with the wheel removed, but to make sure the disc does not move away from the back plate after removing the wheel refit a couple of the wheel nuts as near opposite each other as you can, and just pinch them up with a spanner. John.
  5. It is likely that at some time the hybrid battery will need attention of some sort. Either battery module replacement or fitting new or used battery. There is no reason to expect problems from the transmission "much less likely than a normal auto box or even a manual if you include the clutch" The battery modules "a block of 8 cells" can be replaced at reasonable cost a used battery complete is circa £550, or a new battery is under £3000, but should then give 15 years plus of extra life. John.
  6. This phenomena is caused by the way batteries, and most chemical reactions work. Heat increases chemical reaction rates, and with a battery increases the cell voltage slightly by around 0.1 volts per cell depending on the type of battery, and the temperature rise. After driving the car in the heat the battery temperature will rise more than usual, and since the battery is made up of 240 cells the overall voltage increase is raised by 24 volts or more. This in turn shows as a higher state of charge "more blue bars". As the battery cools this effect disappears lowering the battery voltage, and the number of bars shown. Even lead acid 12 volt batteries suffer from this effect, and is why the charge voltage should be adjusted to account for temperature. John.
  7. I have an after market wireless system fitted on the rear of my caravan. The monitor is a clip on internal mirror in my GS450H. It works reasonably well but it is prone to interference the picture breaking up on occasions. This same system can be wired rather than using the transmitter/receiver, and when used in this mode works very well. Make sure the monitor you buy either gives or can be switched to give a mirror image. The Aygo is such a short car with no fire walls to get the wiring through that a wired system is definitely what I will use. Chosing the monitor size is possibly the most difficult part of the exorcise. I think the best position would be in the small centre storage hole in the top of the dash. The 12 volt feed for the monitor, and the camera can be picked up directly from the reversing lights. Choosing a suitable position for the camera is more difficult than at first it seems. A camera fitted on the outside rear of the car will get it's lens dirty very quickly because of the very flat rear of the car. My suggestion would be to fit it inside the tailgate glass somewhere inside the wiper arc using the type of bonding pads used for fitting rear view mirrors to the windscreen. John.
  8. I have been considering at doing just that on my wife's Aygo. When you say a standard camera do you mean the later Toyota version with sat nav? or an after market version? I do not see any problem with an aftermarket system, and will look into this. John.
  9. I have been driving for 60 years, and in that time I have broken down twice. On both occasions I was able to fix the car, and finish my journey. This makes a saving of about £3000 averaged out. I could buy a half decent car for that. I must admit that at times when I had a company car as well as my own the company car had breakdown cover, but was never used. If I was driving abroad I would take out cover, but not in the UK. I realise to some cover gives piece of mind, and is there choice, but particularly now with modern technology "mobile phones" I see little advantage unless you are incapable of changing a wheel or are perhaps disabled. John.
  10. Did you have the parking brake on? If not you will not get video. John.
  11. Steve although we call it chain stretch it is actually ware on each link pin, and link that gives the phenomena. The longer the chain the greater the effect If you watch the video "Episode 5" at about the 45 minute mark you will see the chain elongation against a new chain is only about 1/3". This on a chain of about 350 link pins equating to less than 1 thou per link pin in ware. The chain is still otherwise perfectly usable. The problem is in the design of the cam position monitoring being so precise that on the longest run of loaded chain driving the cam the system throws an error for the cam timing being 1/2 a tooth out. This is not enough to cause running problems on it's own. It is the error code that causes the problem. I would prefer a chain to a belt every time. It is perfectly possible to change the chain without dismantling the front of the engine as in the video, quicker than changing a belt. It is also less likely to break causing catastrophic engine damage. John.
  12. It should be pointed out that the extended battery guarantee is for up to 10,000 miles or one year which ever comes first, but there is no limit on how many times a year the test can be done. The scheme is set to run until the cars 15 birthday, and can be carried out for the first time at any time in the 15 years. So if you miss a year or more it does not matter. John.
  13. But they do. I was travelling in North Wales, and passed a horse box trailer in a layby with a speed camera in it. John.
  14. A flux that was often used back in the 60's was called killed spirits. It was made by dissolving as much zinc as possible into hydrochloric acid. Very pleasant stuff. John.
  15. Look at the video below starting at 34 minutes in. This will show how the stretch in the chain affects the cam timing, and how it affects the tensioner. This is for a 4ltr engine but is otherwise identical. There is an inspection cover in front of the tensioner that can be removed to see how far it has extended giving an idea of how much stretch there is. without dismantling the engine John.