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  1. The nav controller would normally live in the boot, but needs the cabling as well. Non-nav cars didn't have the nav harness, so if you have the cabling there but no nav unit then it's been taken out. Certainly if you have the widescreen nav screen then at least some other stuff has been fitted as it requires a gateway ECU to allow the AVC-LAN and BEAN networks to talk to each other, without this the heater controls don't work. I retrofitted the full widescreen nav system to mine, details at, you may be in luck with a LandCruiser 100 or Prius nav unit.
  2. Should be a pinned post I reckon. Probably one of the biggest questions regarding hybrids is "what happens when the battery eventually packs in?" and it's good to see that depending on what's actually failed you could be looking at a fix with a double-digit price tag instead of a four-digit one, also worth considering that even a smashed battery pack can be useful as a parts donor if you can find a scrappy who doesn't know its value. beercan's addition regarding scrubbing up the busbar (and also being careful not to overtighten the nuts) is also very useful.
  3. Can you run the battery down to force the engine to kick in? I know the guy who LPG-converted my GS also converted his own RX400h and had a fun job calibrating the gas ECU, which expects you to get the engine up to a certain RPM and hold the pedal there, not much fun when the main ECU decides to shut the engine off. I think he was able to run the battery down, forcing the system to keep the engine on.
  4. Interesting, I'm getting the same symptom now on my 2002 GS. Almost at a stop and you get the buzz and a slight drop in braking pressure (so you've got to put your foot further down). Due for MOT very soon, will be interesting to see if that picks anything up (besides the borderline emissions check - even on LPG - due to one empty cat and one suspect cat).
  5. Very, very new shape. Ouch.
  6. The stuck relay issue is a new one on me. I've had a Meccatune Red Sun HID kit on my GS for years, always in auto mode. Only issue I've ever had was a flickering bulb on one side (replaced the bulb).
  7. I'd have objected to the fiver-a-month request. Can't afford it? Get yourself a Wonga loan, I can't pay for the damage at a fiver a month, why should the scumbag who did it? Mine was keyed on the bonnet not long after I had it. I'm not a violent person but if I'd caught them in the act there'd be broken fingers involved.
  8. I've known this to be due to the yaw sensor being out of calibration (some garage tools can end up clearing more than just the DTC, a local mechanic managed to do it on mine). Search on Google for "gs300 yaw sensor calibrate dlc1", the top result is a PDF that shows how it's done. The instructions Colin posted above are on page 1, the instructions for zero point calibration are on 5 and 6. (absolutely no intention on treading on Colins toes here, it's just that the zero point cal worked for me)
  9. I don't know if the LS is the same but my GS had a big plastic tray in the boot that normally sits above and around the spare wheel. I cut the centre bit out (the oil catcher or whatever it is) and it now sits around the tank (a 75 litre toroidal). Boot floor is about 10mm higher than before and perfectly usable. Mine's a Romano system, installed by Phil Price at the rally school in Mid Wales. Done about 90,000 miles since the conversion.
  10. I've just (today) fitted an XCarLink to my 2002 GS300. It plays MP3s and WMAs from SD card or USB stick, plus has an analogue aux-in so you can connect other audio devices (iPods, bluetooth adaptors, etc) if you wish. The radio (a P3725 in my case as I've fitted the widescreen satnav) sees it as a 15-disc autochanger, the "disc" button on the radio toggles between it and the factory CD autochanger. Here's the one I bought: If you don't want to splice any wires (there's a plug already occupying the socket on the radio with two wires in it) you'll also want You'll need to check the connections on the back of your nav unit if you don't have a P3725 or one listed on the eBay ad, as there are two versions. One is for the big 5+7 pin connector (which mine has), the other is for the small 6+6 pin connector and can be found at And to think I only found it because I was looking for a "lexus jack" to replace mine (I knocked my car off the old one and buckled it ) To remove the radio: 1. Pull out vent + clock module at the top (if you can get a good grip on it it'll pull out without needing to be levered out). 2. Remove ashtray module (pull it out by its drawer). 3. Undo the four 10mm bolts, two top and two bottom. Try not to drop them as the centre console doesn't like giving them back. To route the cable from the glovebox, pop out the cover below it (it unclips at the front so just get your fingers in and pull down), drop the cable over the top of the glovebox, fold it back so you have a loop that's about 6 inches in length and poke this through just above where the glovebox assembly is bolted to the centre console, with your fingers waiting in the centre console to grab it when it pokes through. This could take you a few minutes to do, but you'll get there. The plug will have a tendency to jam but it WILL go through with some gentle coaxing from both sides. To refit the cover, locate its pegs in the holes at the back of the footwell and clip it back up into place. For anyone else reading this: I'd expect the P3724 (non-nav) radio to work as well, the two radios are interchangeable.
  11. The LPG ECU has its own map, but I'm not sure whether this can be remapped to boost performance whilst leaving the Lexus ECU untouched. An installer would be able to tell you more.
  12. I like the comment about one of his previous ones. 650,000 miles and still going strong!
  13. Quentin Willson loves his LSes, and it shows.
  14. The LPG system uses a separate ECU. Connections to the petrol injectors are diverted through the LPG ECU, which also connects to the LPG injectors. As far as the petrol ECU is concerned it's running on petrol and running the petrol injectors. The LPG ECU takes the petrol injector timing and provides an equivalent LPG injector timing (with its own map) instead, whilst the petrol injectors do nothing. If the job's too much for the LPG system (running at high load and high RPM for example) the system can seamlessly switch back to petrol, or (with newer ECUs and newer firmware) run on both simultaneously (topping up the LPG intake with a dash of petrol). When the load eases off it switches back to LPG, again seamlessly. To aid fault diagnosis the individual LPG injectors can be switched off using the ECU programming software, so the engine can run for example with 5 cylinders on LPG and 1 on petrol.
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