Resetting ECU with ignition key

[mpc]

I heard today from a garage that it is possible to reset the ECU by a combination of turning the ignition on and off 5 times (or something like that), this enables the ECU to 'forget' and clear any faults that have been cleared suing vagcom.

Anyone else heard of this method?

 

[Chris90]

Nope,
ECU typically needs software to reset the fault codes/ trims etc.

 

[desertstorm]

If the faults have been cleared using VAG-COM then they will be gone. If a fault occurs and causes a CEL (Check Engine Light) then clears typically the CEL will clear but the fault code will be recorded and will remain.