Well my 2c worth, had the first S49 recall, loud fan, increased fuel etc etc..advised stealership & they said next service would install new S49 update... which they did,
fixed the fan.....
BUT..... Fuel Economy is still higher that before any S49 update. Still using 2-3L/100 more after the 2nd update, 1st update 3-4l/100 more ..
Not happy Jan!