Would 2002 audi a4 has ECU or CVT problem would it still pass the smog check?

SOURCE: CVT 2002 Mini Cooper transmission check and change

The only way to check the trans fluid is to drain the fluid right out of the trans pan. There should be 5 liters. The only way to get the fluid in is by pumping the fluid back in by means of the fill plug on the lower front of the transmission. I believe it is a 4 or a 6mm allen to remove the plug. Whatever you use to pump the fluid back in needs to seal where the fill plug is because fluid will pour right back out. I would change the fluid at least every 50k.

SOURCE: engine number location for 2002 audi a4

is it a 1.8 turbo or 2.8 V6 or 2.7 biturbo V6 ? on most models what you will be looking for is a 3 letter code like ATQ or APW and is normally on a sticker on the timing belt cover, it is also stamped into the engine on a ledge up high. if no luck there check the owners manual, around the 3rd page there will be a sticker that was put in the book during predelivery inspection this sticker is about 3 inches by 3 inches and filled with id codes for almost everything. If the pdi wasn't done right another copy of the same sticker will be under or next to the spare tire in the spare tire well.

SOURCE: fill transmission fluid on 19999 audi a4

LISTEN CLOSE. THERE IS A PLUG ON PAN. REMOVE IT. WITH A SYRINGE TYPE CANISTER YOU NEED TO INJECT THE FLUID INTO IT UNTIL IT STARTS TO COME OUT. THEN CAREFULLY START VEHICLE AND INJECT ANOTHER 3/4 QUART UNLESS IT STARTS TO COME OUT OR EVEN A QUART.LET IT RUN FOR 5 MINUTES THEN CONTINUE TO INSERT UNTIL IT OVERFLOWS AND TIGHTEN THE PLUG BACK TO THE PAN. i WOULD ONLY USE AUDI VOLKSWAGON FLUID AND YES IT CAN RUN $14 TO $18 A LITER