In the past 6 months have been the owner of a 2000 Prado TX Diesel brought here locally (Kenya) from the first onwer here locally prior to being sourced second hand in 2007 from Singapore and probably Japan before that.
During steady state driving the autobox will suddenly shift down one or two gears and then change back. All without any change in throttle position or effort required. During the last longer drive the electronic enigne controls went into safe mode four times in 30 minutes driving (idle only) which requires stopping the car to turn off the iginition and restarting. That seems to resets the ECU and the car reacts normally again to throttle input. The car also seems to hunt a bit at any constant speed. Not always, this is also intermittent.
The gear shift on the auto box is very smooth and it always reacts to throttle input except when it has gone into safe mode.
Turns out that the previous owner had changed the auto box for the same problem and thought it had been cured (or so they say). So it is not the gearbox itself but likely to be in the elctronics. Any ideas on where in the electronics to start looking?
patrick van oudgaarden
Naivasha, Kenya
During steady state driving the autobox will suddenly shift down one or two gears and then change back. All without any change in throttle position or effort required. During the last longer drive the electronic enigne controls went into safe mode four times in 30 minutes driving (idle only) which requires stopping the car to turn off the iginition and restarting. That seems to resets the ECU and the car reacts normally again to throttle input. The car also seems to hunt a bit at any constant speed. Not always, this is also intermittent.
The gear shift on the auto box is very smooth and it always reacts to throttle input except when it has gone into safe mode.
Turns out that the previous owner had changed the auto box for the same problem and thought it had been cured (or so they say). So it is not the gearbox itself but likely to be in the elctronics. Any ideas on where in the electronics to start looking?
patrick van oudgaarden
Naivasha, Kenya
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