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Try reprogramming the window I think you lower it all the way holding the switch down and then the same back up from the drivers control. Once done it should work again

Ok it's a model of a V8 engine but looks fun to build and no oily hands. After building this I may even do my own cam belt the next time.

I doubt you will regret your purchase....and your mechanic is spot on....other than one proviso...I genuinely believe the ls400 was better built than ANY other car of the ninties, including any rolls Royce...

10+ ...you sure you are capable?

I'd chop his nuts off if he disfigured my car.... Just imagine waking up in morning n seeing go faster stripes on 600... Oh ****... shudders at the thought lol No fear of that car,is safely locked up in heated garage plus all alarms n cctv etc etc

Never been but look forward to hearing your thoughts and seeing pics of the cars on show.

I don't have enough technical details to know how the new key production works. The "official" way of programming new keys in audi cars requires a working key to put the car into "programming" mode. If you don't have a working key to hand, you have to replace almost the entire electrical system and door locks. However, it is possible to bypass this somehow - probably, people have worked out how to modify the firmware on the security ECU, and upload a new firmware which has the check for an existing key deleted. My brother bought a newish 2nd hand Audi A3, but it only came with 1 key. One day he lost it. He called the dealer: ultra-secure system, no way to reprogram new keys. £3000 for a new ECU, new security unit, new locks, etc. He leaves the car at home, and takes the train to work. He phones an independent "security specialist" while at work. 2 hours later, the security bloke turns up at his work, with 2 new car keys and a bill for £400. He'd gone to my brother's house, broken into the car, reprogrammed the ECU, decoded the locks, cut 2 keys and matched the immobiliser chips to the car, and then hand delivered them to my brother 10 miles away. Toyota/lexus do seem to secure their electronics better than audi/BMW. Look how difficult it is to get a remap for a toyota or lexus! The electronics has reasonably good anti-tamper technology in it (to prevent competitors from stealing the technology in the programs). Whether this is actually because of better design, or because there are fewer electronics experts trying to reverse engineer lexus ECUs than BMW ECUs, I don't know.

I wondered why fuel economy Is poor lol

Lol I'm quite happy to have my LS400 as a garden ornament,