I have a IS250 with an Auto Gearbox which has been great from new. Recently, it developed a strange BANGING/CLUNKING noise which appeared to be coming from the Gearbox area of the vehicle.
Having seen 2 mechanics, they diagnosed the problem with a tool called
ADS-1 All Cars Fault Diagnostic Scanner and found the problem should be the Transfer Box.
We removed the transfer box and re-conditioned it, fitted it back on the car and the noise is still there....
Now the mechanics think it is the gearbox but neither are sure that the gearbox is causing the noise.
Obviously don't want to go to the expense of removing the gearbox only to be told that it is not the problem and wondered if anyone has experienced the same issue ?
Any help would be greatly appreciated. Thanks