I have an unusual problem. I have been trying to get engine ping fixed with my kluger. The problem is due the other car pinging when using low octane fuel. If 98 octane fuel is used the car does not notably ping. I took the car to 2 Toyota dealers to be serviced and also look into the Ping problem. Unfortunately I see that technicians are not able to resolve anything that is outside the normal car maintenance. The responses I have gotten.. (1st dealer) There is no problem.. the computer says that there has been no pinging. (2nd dealer) WOW. this car is pinging. the computer says there is no pinging though. We are not sure what is exactly wrong. If you like we can try to fix this. It will cost you money for us to work on the car and try to find out what is wrong. Absolute bull**** I say. Now I am no novice to mechanics and I know what will stop this. ( retard the timing ) The timing however cannot be mechanically retarded, it is controlled by the internal computer, (using all the sensors..etc. to optimise the motor's running). So what I want is some way of getting my grubby mitts onto some wiring diagram.. software?? so I can look at fixing this myself.. ( have really really been discouraged by the quality of the service people at Toyota. meanwhile I will just run the car on 98 octane while I can see about this problem.