Faults are deleted if they do not reappear for 30 or 40 times ignition is turned on except some security and safety faults like airbags. If the fault is fixed light will not come on even if the fault code is still saved except safety features like airbags again.
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Currently 8less
2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D
8 history:
2006 A8 Sport 4.2TDI quattro SOLD,
1997 S8, reached end of life with gearbox failure
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