Hi John,
I checked the transmission coolant, got the car up to running temperature and the level was perfect. Smelt fine as well, no burning aroma.
I took it to my local Lexus dealers and they seemed to agree that there was something wrong when the tech guy drove it. They plugged it into the diagnostics machine and couldn't find a thing. The dealers were a little hesitant to take it in a look at it and said give it a few more months and see how it goes. I can understand why as it has only just had a brand new box and torque converter 2 months ago and has a 12 month guarantee on it...Still I'm pretty sure its only going to get worse, when a problem starts it rarely heals itself. Time shall reveal all...
Has anyone else experienced any thing like this? I have managed to replicate it consistently when slowing to a stop after the car cruises at 40ish. It jolts around 20ish with knock the car, the severity of the jolt seems to vary. Were there any updated on the auto boxs on the 430? Could they have put the incorrect box on the car, it is shared with the GS or SC? Or maybe an ECU updates that might get rid of a problem? Any thoughts are welcome.
Chris