I have vario 2006 on Petrol. 80k driven.
I have recently (10 days ago) changed its Fuel Filter - Engine Oil - Plugs - Transmission Oil also done Throttle body service/Tuning etc.
Now when the car is in "D" with full brakes applied and I turn on the AC - it knocks for say 2 - 5 seconds.
Also when on road I apply brakes to stop the car on any signal - it Do NOT knock but when the fan (engine fan) starts it behave same as it in the case of AC.
I am not sure what can be the issue. Is it something with Transmission. Please note there is almost no knocking when driving. I use Total Petrol.
Can any one suggest for the same?
Thanks in Advance.