The trusted RX300, 2001 (petrol/lpg), had a sudden and catastrophic failure yesterday, in probably the worst place in the country, Tower Bridge London! It just stopped and on trying to switch it back on, ABSOLUTELY NOHTING, no cranking, no clicking, NOTHING. After what seemed an age, I had to push it forward (no one helped) with the aid of gravity into the side of the road just after the bridge (RED route, no stopping, no doubt I will get a fine too)
Recovery guy came and was confused too as the battery, alternator, starter, cambelt all fine. Finally tracked it down to a blown 20amp fuse, marked AM2. Once this fuse is replaced, the car starts instantly, as it has always done. But rev the car a bit or put it into Drive and the fuse blows again and everything is dead again. Put in a new fuse and all is fine once more. This means that the car is undriveable and had to be piggybacked on the truck...a painful site :(
Question is why does this fuse keep blowing...are the wires from the ignition to this fuse shorting somewhere as you rev the car? I couldnt spot any loose/exposed wires. Is this going to be a monster problem of tracking down some issue in the wiring loom?? Recovery guy tried to read the engine codes but there were no faults stored at all. He spoke to Lexus who said "yes we have seen such ignition problems before", he offered to bring the car in, but they were not interested.
Any ideas would be most welcome. I am really scared of such electrical problems and am seriously considering getting rid of it, once it gets fixed.
thanks